Does off-grid solar confuse you? Check out my DIY friendly website for solar system packages and product recommendations, and so much more! www.mobile-solarpower.com Join our DIY solar community! #1 largest solar forum on the internet for beginners and professionals alike: www.diysolarforum.com Check out my best-selling, beginner-friendly 12V off-grid solar book (affiliate link): amzn.to/2Aj4dX4 If DIY is not for you, but you love solar and need an offgrid system, check out Tesla Solar. Low prices and great warranty, and they can take your entire house offgrid with their new Powerwalls: ts.la/william57509 ~~~~~~~~~~~~~~~~~~~~~~~~~ My solar equipment recommendations (Constantly updated! Check here first): 12V/48V Lithium Batteries: www.mobile-solarpower.com/solar-batteries.html Solar System Component Directory: www.mobile-solarpower.com/solarcomponents.html Plug-N-Play Systems: www.mobile-solarpower.com/full-size-systems.html Complete 48V System Kits: www.mobile-solarpower.com/complete-48v-solar-kits.html DIY Friendly Air Conditioner/ Heat Pumps: www.mobile-solarpower.com/solar-friendly-air-conditioners.html Complete 48V System Blueprint: www.mobile-solarpower.com/48v-complete-system-blueprint.html ~~~~~~~~~~~~~~~~~~~~~~~~~~ My Favorite Online Stores for DIY Solar and Coupon Codes: -Current Connected: SOK, Victron and High Quality Components. Best prices and warranty around: currentconnected.com/?ref=wp -Signature Solar: Cheap Server Rack Batteries and Large Solar Panels: www.signaturesolar.com/?ref=h-cvbzfahsek -Ecoflow Delta Official Site: My favorite plug-n-play solar generator: us.ecoflow.com/?aff=7 -AmpereTime: Cheapest 12V batteries around: amperetime.com/products/ampere-time-12v-100ah-lithium-lifepo4-battery?ref=h-cvbzfahsek -Rich Solar: Mega site and cheaper prices than renogy! Check them out: richsolar.com/?ref=h-cvbzfahsek -Shop Solar Kits: Huge site with every solar kit you can imagine! Check it out: shopsolarkits.com/?ref=will-p -Battery Hookup: Cheap cell deals bit.ly/2mIxSqt 10% off code: diysolar -Watts 24/7: Best deals on all-in-one solar power systems, with customer support and distribution here in the USA: watts247.com/?wpam_id=3 ~~~~~~~~~~~~~~~~~~~~~~~~~~~ Contact Information: I am NOT available for personal solar system consult! If you wish to contact me, this is my direct email: williamprowsediysolar@gmail.com Join the forum at diysolarforum.com/ if you wish to hang out with myself and others and talk about solar FTC Disclosure Statement and Disclaimers: Every video includes some form of paid promotion or sponsorship. Some links on this youtube channel may be affiliate links. We may get paid if you buy something or take an action after clicking one of these. My videos are for educational purposes only. Information is subject to change/update at any time. Electricity is DANGEROUS and can kill. Be smart and use common sense :) DIY Solar Power with Will Prowse is a participant in the Amazon Services LLC Associates Program, An affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com
being confident enough to admit mistakes to large crowds....is a tremendous asset. Everyone makes mistakes...even the great will prowse....(I am a fan)....now we all got to learn a bit more about things from your mistake....thanks...these are the kind of things that create life long supporters...and I'm one.
Good admission! Seen a vid where a guy said you were mistaken. A good person admits their mistakes. We all make mistakes and I appreciate you owning up. You have a great channel bro! Happy Thanksgiving!
I'm running Toshiba's LTO cells in my 71 Harley build. They are heavy. Twice the weight of lithium ion however the benefits out weigh that. I'm very impressed with what I've found. I have a 60 mile range and can achieve speeds in excess of 90mph. Being able to not need cooling or heating is great! I can use all available regen and I can charge with almost any power source. Not to mention I've got 108 cells that I have yet had to balance. 🤷🏼♂️ Plus thinking I can leave these to my family when I pass or the ability to repurpose them into any application I want in the future is a huge +!
The safety of these should be put into the equation of application. Efficiency, life span, temperature range, and large currents is a list that combines to make a stronger factor than individually. I am sure there is overlap of chemistries in use situations. Thinking of the whole system and how it interacts with other components and requirements is the path to finding a fit. Often a good fit is more usable than a system of the best components.
Hey Will, I have also done a few tests on my cells and I have discovered that when I do a one C charge / discharge at -15 degrees F. I receive roughly 85% of the capacity when compared to one C charge / discharge at 70 degrees F. These cells are perfect for cold weather applications when I use a 24 volt -> 12 volt converter. I lose roughly 5% in efficiency, but I need these cells to work in negative temps for the application that I have without the cells being destroyed.
@@entune85 I bought from AliExpress the RCNUN model RC241230L as 30 amps was plenty for me. I tested it using the 150 watt discharge tester Will demonstrated in one of his videos. I tested with a load of 150 watts on the output side, and saw an incoming draw of roughly 156 watts. So that would be slightly better than the advertised 95% efficiency.
@@herbertwerner2287, I do not trust or want to risk an insulated box being able to keep the temp above freezing. I have a remote hunting cabin where I attached a solar Panel to charge a bank of 8 LiFepo4 batteries that I put in a 50 gallon plastic barrel that I dug into the ground. This works great as the ground is above freezing because of the insulation we put down. I have a breathing tube and access panel as well.
@@Aaron_Peters Oh I see Aaron, ya I didn't know you where doing that I thought you were asking for an idea of how. I like your idea, I had thought of that myself and then forgot about it. Plus I would just think that might be all around safer to have them where if anything were to go wrong with them they would be in safer place.
One can appreciate the humility of your attitude regarding your work. I enjoy the informative videos you provide and encourage you to keep up the good work.
I think they are perfect for a garage/out building shop where you need high amp out put to run an electric motor for an hour or 2 and you don’t temp control the area.
I think they're great for telecommunication towers. We use 24v DC systems. This would help with the long term cost of keeping a highsite running with backup power. Would also combat the theft problem due to their weight.
This is great, I ended up ordering a 12volt set to test out what you said before because I disagreed, also I intended on using them in a stationary set up. I just moved from your part of the world to an off grid farm I wanted these to run some heavy equipment in the barn, I’ll let you know how it goes. Thanks for the update!
I think the insane longevity justifies all of it's flaws. I wanna get these kinda batteries for my electric bike in the future. I know it's not gonna be cheap and it won't have high capacity, but really high longevity and small charge time are very important for electric transport
@@IndenturedUA-camSlave My LiFePo4 battery was tested by driving a steel rod through it. It didn't catch fire. The massive cost of Lithium Titanate is just too high to justify its widespread use. Maybe in some specific applications they can be justified, but doubtful they will ever be mainstream.
@@michaeldoherty2289 they are already mainstream in buses in cold countries where -safety is critically important -charging speed needs to be super high -charging in low temperatures is required -high longevity is needed so they wouldn't need to be replaced every 1-2 years. and they work perfectly there
@@TabalugaDragon I think they are used mainly in consumer electronics, probably because they use small batteries so the high unit cost isn't as much a factor. Don't get me wrong, they are really amazing batteries. I would never argue that they aren't superior. It just that the cost factor for large batteries is making them very difficult to justify compared to other chemistries.
I agree about the cost but the LTO w/6cells (if you have the money) should do fine in a nominal 12v solar application so long as your battery capacity is well matched to your solar array. Even solar modules made for charging 12v circuits typically have an Vmp of about 18v and there are programmable charge controllers that can configured to operate in the optimal range. That said, the loads would need to be checked for higher voltage tolerance or use a high efficiency dc to dc converter.
LTO is most used lithium type in car audio at the moment. Works very well for that application and majority of cars can handle 15-16V charging voltage. No one uses BMS but I've seen some using balancers. I don't have any because after half a year of use the voltage difference between cells was only 0.01V, I had the cells in paraller for 24 hours before assembly
Man, we always know you'll serve up the truth! Thanks for revisiting Titanate - as others have said, it takes integrity to clear up mistakes & misunderstandings, and I really do commend you for that. You provide thoughtful and reasoned explanations for what chemistry is ideal for different applications. The fact that we may not consider Titanate the most ideal chemistry for solar power systems doesn't mean it's not incredible technology! I always appreciate your critical approach because at the end of the day, it's just too easy to convince ourselves that things are either 100% good or 100% bad. Life - and battery chemistry, alike - is typically a bit more nuanced than that :)
It's not biased to advocate for the appropriate technology for an application. I've watched a fair amount of your videos all seem fair. Thank you for your sincere content.
It is so refreshing to hear someone calling sources out and saying it as it is, without the typical b.s. And you use the same approach to yourself. I love how you are purely about the knowledge and discovering ways to push new battery tech with new inverter tech with new solar tech to their limits. And your own limit.
Thanks. This video clarifies everything with respect to the differences between LTO & LiFePO4. Both have their advantages and places. You can puncture or freeze an LTO but LiFePO4 is perfect for me in a warm climate.
When the cost comes down, I am really attracted to the idea of getting 55 years (before they get to 80%) out of them in a solar application. That makes potentially a several hundred year use case...
No one is perfect Will. But you are damn close to perfect. Lol. You have no idea how many old ladies watch your videos. Seriously. Out of the 55+ year old women that are nomadic about 75% know of you and equally love you and are so proud of you. Brings tears to my eyes. Seriously. You are every mom and grandmas dream child. Just know you are loved by many. Thank you for being you.
Good job Will. Everything has it's place, and LTO's could make for a better solar system if you really need them AND if you can afford the technology. If you can't use something because you can't pay for it, then it doesn't matter what it can do for you.
if there is one thing us human All have alike is we all have made done said mistakes. now as for people who can catch correct and be willing to admit those mistakes well those are the rare and exceptional folks like yourself sir keep up the good work.
A now I know why the prices were all over the place. Different grades. If they're going to sell 2nds or worse they should be labeled as such. Thank you Will
Having the integrity to correct an error will serve you. Don’t let the losers who attack you to try to raise themselves get under your skin. You have one of the most informative and honest channels in this media. Keep on track and it will be rewarded.
Congrats on redoing this, admitting the errors in your earlier videos, and just being you. :) Yes, these have negatives as compared to LiFePO4, but they are a valid option with some positives when using A Grade cells. (The biggest issue I see is for people wanting to use only a 12V system, but most home setups will be either 24V or 48V.)
I love my 100 Ah LiFePO4 DIY battery I built after watching Will's videos. I used Sinopoly cells, a Daly BMS and a water tight plastic amo case. It works great in my sailboat to power my 12 volt systems and 40# thrust trolling motor. I charge the battery with Renogy 100W suitcase panels. I just bought another, so 200W next summer. :) Thank you, Will, for showing me the way!
I have a LG 6s BMW LTO as a 12volt car battery! Here in Illinois it comes in handy, due the winter months! Seen too many guys lead acid battery freeze during winter!
I do like the video Will well done. Thanks for the test results as it directly relates to my LTO batteries. I see you point about lithium phosphate batteries. They are the best and I agree with that. For me it is the cycle life that grabs me and the low temperature charging. As you mentioned in the future other types, maybe solid state, and yeah changes will come as time passes by, and so will the batteries I will use. Enjoyed the live stream chat last night. And thanks for addressing LTO batteries and the issues you talked about. Great stuff !!
Thank you Will, you just proved why the Elechive by Zero Breeze has a 35v min voltage for solar charging. They even made their 100w panels to act like a 24v panel ("Our 100w panel is customized with the output of 35V."). Just what we don't need. I canceled my order when they started flip-flopping between 400w solar and 800w solar charging. Still. I look forward to your review, as they said they were sending you one.
That system would be too complicated, not to mention all the trouble one has to go through to get the authentic batteries! Thanx for your honest input, like you I’ll stick to lipo 4 until the technology gets better! 👍
You deserve lots of credit for making this video and explaining how nd why you made a mistake. Most people's ego would not even think of believing they could be wrong or admit they where incorrect.
Bonus points for the correction. I still think those may be the ticket for my weekend home rail caboose I am building. I am in between heating a LifePo4 pack to +5C when needed or go with this chemistry and it just works. I need to run from -10C and up.
These really shine in remote outdoor solar applications like radio repeaters, mesh nodes, and weather stations where you will encounter sub-freezing and possibly very hot temperatures. I wish you could find deals in a smaller form factor that 60138, 60160, 66160 as these are overkill for LoRa mesh nodes (and you have to do 2S for most of these applications). I am experimenting with Li-ion and LiFePO4 burial beneath the frost line for LoRa in Arizona where we get both high and low extremes.
Can you get your hands on some alternate technologies like zinc bromide flow batteries and test them? I know Redflow out of Australia makes a good zinc bromide flow battery.
Nice video. It was great to see you get results consistent with others. Obviously, charge rate and having grade A batteries will make a huge difference in results. The large dynamic range of this chemistry is interesting to me. Finding the right application might be a home run for this type of battery. Thanks for all the effort you put into your videos. It's greatly appreciated.
Luckily you did a little ;-) That wouldn't have kept me away from going to use LTO on my scooters to transport the necessary energy. Thanks for giving the basics. And my trials will let me see how good LTO will be performing in real day-to-day use.
Great job explaining Will. Its NMC for me for now. If I ever ware out my Tesla bank I'm going to switch to lithium ion phosphate. I would love to build a portable High amperage welder using LTO cells.
All of these products are best for a certain application, it’s just understanding what the best solution for your application which is important. I agree with Will btw, it’s unarguable that LiFePO4 is best for solar off grid storage right now, but like everything, it will change over time. Probably better to only consider the payback over the next ten years when buying, because by then there will be far better and cheaper options to upgrade to.
I do agree on price being not the best. But when used wuth a proper BMS. You can indeed use them effectively in a 12v system. Also the high C rate actually helps in a 12v system since 12v obviously draws more Amps than a 24 v system
With the various current range and future cell technologies I think there is an opening for a programmable management system. Imagine if you could enter the nominal voltage, upper and lower voltage, percentage of capacity to use, temp monitoring parameters, maximum charge and discharge rates; then the management system would allow you to run any chemistry with full or limited capacity (for longer life). With the low price of microprocessors - ARM processors cost cents in volume - this is eminently achievable!
I see LTO incredibly useful for remote antenna stations. The extreme durability of LTO and the wide temperature range make them ideal for that application. The environmental conditions would destroy any other lithium chemistry in short order.
Great video! In science mistakes can happen, it's normal. The real mark of a true scientist is the willingness to update one's views based on evidence. That being said, the application I'm really interested in for these is replacing sla car batteries with a 6s array of LTO. Based on what you said about changing in 12v applications it seems like their full potential would not be able to be utilized. But I'm not sure if it would really matter if you just wanted the short burst of high current to start the engine. One could potentially use an active balancer to help mitigate cell drift rather than a bms since the balancer is always on and can run at pretty low voltage. The reason I'm so interested in this is the cycle life of lto. A pack of those could potentially outlast the lifetime of multiple cars. With sla's needing to be replaced every 3-4 years and costing ~$120 the savings by using lto could really add up. Not to mention the reduction in waste production and CO2 emissions from making all those sla batteries.
Will, Most of your viewers know your are 100% genuine and honest. Viewers that think your a shill are completely off there rocker, or maybe there meds. Well done.
Hi Will . Your Awesome. I Love Your Honesty . If you ever YOU MAKE A SOLAR POWER GENERATOR . I WILL BUY ONE . YOUR KNOWLEDGE AND DEDICATION TO FINDING THE BEST PRODUCTS FOR ALL OF US WHO WATCHES AND DEPENDS ON YOU IS " 1 👍 . Thank You Will 😊
I like the lives my man. Just wanted to share that here as well. Also a fan of you doing Instagram again or maybe UA-cam shorts would be an option for quick videos. I don't know much about that.
Thanks for your honesty and a simple mistake is expected from us all. Great job with what you do and thanks for the information as it is very important to us DIY people. Looking forward to your future videos and ideas!
Thanks for your input man, love this channel. I really like the temp range and low cycle degradation ! Could have some great applications up here in Canada !
Thanks for making a video on that, and showing the errors. I and few other UA-cam users did point to you about these issues few months ago, so good you finally done some other tests. I agree LTO, are a niche, and generally not preferred for solar. As of calendar aging, well, that is still something I would love to see, because there are different opinions on this. LTO still is good for very high C rates (~10C), even if it means lower efficiency in energy itself. I don't know what exactly applications require 10C, but maybe some power tools, or spot welding, could benefit from it. I believe the LTO do have really good cold temperature performance, so maybe there are some applications where it matters too, and are inherently safe. Like satellites, with frequent temperature swing, and a lot of cycling in short time.
I agree with your conclusion. When you weigh the pros and cons LiFePo4 is simply the best chemistry for solar that we have right now. I can build a massive battery bank that is really cheap and when it wears out in 20 years or so I will almost certainly have better options available. I think size does matter even in stationary applications. A 30 kWh pack isn’t that big for LiFePo4 but would be much bigger and take many times more cells with LTO. Not to mention that you have massive 280ah cells for LiFePo4. Imagine the sheer number of parallel cells and bus bars you would need to use LTO for a large project.
@@SystemsPlanet That’s true but even the bus work will take up a lot more space because of the sheer number of cells. I also wouldn’t mind building another battery bank in 20 years, especially if there is better technology then. If I invested all the money I saved going with LiFePo4 over that period I could afford an enormous battery. The opportunity cost of LTO right now in incredibly high in my analytical mind.
These cells make for fantastic battery packs if you value safety, longevity and ease of battery pack building in extreme hot or cold climates. Evs are a good use for them if you don't need to be super space or weight efficient.
I’m planning to build a LTO battery for a start battery in an off-roader 👍 able to handle the high charge rate of a large alternator and loads like a winch
Well, 6s or 12S lto batteries work good when used with 12/24V AC inverters, you can use most of the lto capacity. But yeah, only a few solar charge controllers will let you charge them to capacity. Don't need an expensive bms, I use a supercap pcb with an active balancer (capacitor types).
Ahhhh thanks for clearing up that conundrum - Your earlier superstition that Titanate for super long life, fast charging with a downside of high cost, weight and bulk is still valid - I've concluded that Lifepo4 in 4S is best for my motorcycle starter & RV house battery because they are most comparable with the alternator outputs (14.2V) - and li-ion for my ebike because of power density and compact size - its a horses for courses approach - as you said in your earlier post Titanate would be best for a remote station were servicing was infrequent and where temperatures might be sub zero - it could well be "Rocket Science" at least in application : )
Good video! Just keep doing what you are doing. The more successful you get the more there's people with differing opinions. All you can do is go off the best information you have at any given time. I hope the comments don't ware you down or change you. Stay positive, you do great work!
for my application lto is the best (so far) to use. i need long life, a low self discharge rate, wide temp range and high c rates for automotive use. Sure they aren't cheap, but then replacing lead acid every 3-4 years isn't cheap either. Gone are the days when you could hit a auto parts store and grab a new LA battery for your car for under $40.
Hey Will I went down a UA-cam rabbit hole and found a great video related to your topic and channel, about how Chinese lithium batteries are made, QA’d and graded Class A, B, and in some cases C. It’s a little rough to listen to but if you did a reaction video with it your viewers would come away with a whole new understanding about lithium batteries, especially those coming from China. The first comment got caught in spam guard because it had the UA-cam video link.
Sounds like you could use LTO for a 10.8V system, but LiFePo definitely looks like a better option for most environments vs these. LiPo, or other Lithium chemistries are also better for many uses, especially mobile applications.
How cold can lithium titanate be charged? How cold can lipo be charged? And if you do a video comparing might as well throw lead acid in there too. I love your content.
Thank you! I was thinking to get them for the van but its no good for 12v... The only good thing is that they dont blow up like other Lithium chemistries.
Will, what's your opinion: Say ya want to maximise the available energy and choosing between 11S and 12S. 12 S will have about 8% more energy from the extra cell. But ya have to limit total voltage to 30 volts for use with typical 24 volt equipment. So the cell voltage is 2.5v max. The lost energy not going to 2.6v is roughlyabout 4% I estimate from 2C curves. So I conclude for energy storage its 4% better to use 12S limited to 30v than 11S. If the BMS balancer threshold can't be adjusted accordingly, then use an active balancer. Perhaps there is an energy boost from the higher average operational voltage of 12S too. Your thoughts?
I think it would be fine to use lithium titanate batteries with a programmable all in one like the SOLARK. That thing is awesome if you're looking for all-in-one EMP proof solar setup it's just awesome my brother has one on his house and he can charge his lithium batteries have a good tie and charge the batteries at the same time and invert for his house absolutely amazing device
Hi Will. I enjoy your videos. I have a MS in Physics and pretty much understand everything you are posting. However, I have a specific application question. I have a 4WD golf cart. Currently uses 8 each 6 Volt 200 A-h batteries. I would like to replace those with lithium of some type. The buggy uses 2 each 18HP or 13.5kW electric motors. The motor controller is a 600 amp. So, it pulls a lot of peak current. I think it drops back to 100 to 200 amps just rolling along. I can buy 12V 100 A-h LiFePO4 batteries for about $150 each. A 4S4P setup would be $1200. However, I need at least 200 Amp Continuous discharge and 600 Amp peak. The LiFePO4 batteries fall just a little short of this. To replace the Pb Acid batteries costs about $1200 as well. I have also looked at LiTi or LTO and 22 each 40 A-h cells look attractive at a comparable price. However, in both cases the BMS limits the discharge. I am seriously thinking of using 20 or 22 cells of LTO without a BMS. What do you think??
These are all great points. Considering the use case and how the batteries perform best - both LTO and LFP are great choices. In Texas where the Energy market is deregulated - energy storage beyond solar (distributed generation) is becoming more important. Some suggest the as a result of growth, expanding renewables and as well as retiring coal power plants that energy prices will become more volatile and ultimately more expensive. Now to build renewables such as wind and solar throughout the state it's imperative to build batteries next to them else congestion occurs and prices in the real time market or between locations get's wonky. But even with large scale battery solutions - no matter the battery type - I still think the solution comes back to baseload or nominal battery storage within a home. In this case, as the market in ERCOT/Texas allows through an Energy Company - a battery in the home could utilize a high frequency arbitrage algorithm via price triggers to charge quickly or discharge quickly. The concept of buy low sell high works much better if it's responsive to the market which LTO would allow. After playing with the configurations, cost benefit analysis - I think the solution in this case is BOTH LFP with linear predictable charge and discharge then set aside 25% of the battery capacity to the LTO which could arbitrage around it and could handle 15 minute spikes where prices can go from 0.01 cent kwh to 1000 cents kwh. This is a use case where both batteries would provide a great deal of benefit both for the home/end user and ultimately the grid. Lengthy but a unique application yet still not as awesome as satellites needing LTO battery - that's cool!
My system is a 48v hybrid off-grid system. I put together two 48v 200Ah Lifepo4 and hook the two in parallel to get 400Ah. Almost always when supplying load to till it cut off point. 1. How come the other 48v tray does not drain to its lowest cut off voilts? And when the system charges back up. 2. Does it suppose to charge one tray at a time? I all so heard you have mention in one of your clip saying that battery do not like to be parrarel . 3. LIke to know why and how to make it like one another so it can supply load equally? THanx for information. keep up the good work.
Does off-grid solar confuse you? Check out my DIY friendly website for solar system packages and product recommendations, and so much more! www.mobile-solarpower.com
Join our DIY solar community! #1 largest solar forum on the internet for beginners and professionals alike: www.diysolarforum.com
Check out my best-selling, beginner-friendly 12V off-grid solar book (affiliate link):
amzn.to/2Aj4dX4
If DIY is not for you, but you love solar and need an offgrid system, check out Tesla Solar. Low prices and great warranty, and they can take your entire house offgrid with their new Powerwalls: ts.la/william57509
~~~~~~~~~~~~~~~~~~~~~~~~~
My solar equipment recommendations (Constantly updated! Check here first):
12V/48V Lithium Batteries: www.mobile-solarpower.com/solar-batteries.html
Solar System Component Directory: www.mobile-solarpower.com/solarcomponents.html
Plug-N-Play Systems: www.mobile-solarpower.com/full-size-systems.html
Complete 48V System Kits: www.mobile-solarpower.com/complete-48v-solar-kits.html
DIY Friendly Air Conditioner/ Heat Pumps: www.mobile-solarpower.com/solar-friendly-air-conditioners.html
Complete 48V System Blueprint: www.mobile-solarpower.com/48v-complete-system-blueprint.html
~~~~~~~~~~~~~~~~~~~~~~~~~~
My Favorite Online Stores for DIY Solar and Coupon Codes:
-Current Connected: SOK, Victron and High Quality Components. Best prices and warranty around: currentconnected.com/?ref=wp
-Signature Solar: Cheap Server Rack Batteries and Large Solar Panels:
www.signaturesolar.com/?ref=h-cvbzfahsek
-Ecoflow Delta Official Site: My favorite plug-n-play solar generator:
us.ecoflow.com/?aff=7
-AmpereTime: Cheapest 12V batteries around:
amperetime.com/products/ampere-time-12v-100ah-lithium-lifepo4-battery?ref=h-cvbzfahsek
-Rich Solar: Mega site and cheaper prices than renogy! Check them out:
richsolar.com/?ref=h-cvbzfahsek
-Shop Solar Kits: Huge site with every solar kit you can imagine! Check it out:
shopsolarkits.com/?ref=will-p
-Battery Hookup: Cheap cell deals
bit.ly/2mIxSqt
10% off code: diysolar
-Watts 24/7: Best deals on all-in-one solar power systems, with customer support and distribution here in the USA:
watts247.com/?wpam_id=3
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Contact Information:
I am NOT available for personal solar system consult! If you wish to contact me, this is my direct email: williamprowsediysolar@gmail.com
Join the forum at diysolarforum.com/ if you wish to hang out with myself and others and talk about solar
FTC Disclosure Statement and Disclaimers:
Every video includes some form of paid promotion or sponsorship. Some links on this youtube channel may be affiliate links. We may get paid if you buy something or take an action after clicking one of these. My videos are for educational purposes only. Information is subject to change/update at any time. Electricity is DANGEROUS and can kill. Be smart and use common sense :)
DIY Solar Power with Will Prowse is a participant in the Amazon Services LLC Associates Program,
An affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com
being confident enough to admit mistakes to large crowds....is a tremendous asset. Everyone makes mistakes...even the great will prowse....(I am a fan)....now we all got to learn a bit more about things from your mistake....thanks...these are the kind of things that create life long supporters...and I'm one.
me two!
Very well said, I agree.👍👍👍👍👍👍👍
This is one of my favorite things about him. He’s not afraid to admit mistakes and provide updated information. He should do a video with Jehu Garcia!
That's why you won't be seeing him running for office in the future. Honesty and humility is not a prerequisite as a politician. LoL
@@rmdjapri Me THREE!!!!
Much respect . Most don't admit that kinda thing.
Good admission! Seen a vid where a guy said you were mistaken. A good person admits their mistakes. We all make mistakes and I appreciate you owning up. You have a great channel bro! Happy Thanksgiving!
I'm running Toshiba's LTO cells in my 71 Harley build. They are heavy. Twice the weight of lithium ion however the benefits out weigh that. I'm very impressed with what I've found. I have a 60 mile range and can achieve speeds in excess of 90mph. Being able to not need cooling or heating is great! I can use all available regen and I can charge with almost any power source. Not to mention I've got 108 cells that I have yet had to balance. 🤷🏼♂️ Plus thinking I can leave these to my family when I pass or the ability to repurpose them into any application I want in the future is a huge +!
108 cells on a harley? suuuuuure!😂
@@ernieschatz3783 each brick has 12 cells 9 bricks equals 108. Unless I missed something while building it. Lol! 🤷🏼
Dang that sounds great. Is that all you could fit?
at least Will , should win 1st place for the best hair
Got a little mad scientist going on today :P
He cuts it himself.
It's all that electricity lol!
He’s wearing the same clothes from last nights live so I am going with he rolled outta bed and went to work.
SuperPeteJames ditto. Lol
The safety of these should be put into the equation of application. Efficiency, life span, temperature range, and large currents is a list that combines to make a stronger factor than individually. I am sure there is overlap of chemistries in use situations. Thinking of the whole system and how it interacts with other components and requirements is the path to finding a fit. Often a good fit is more usable than a system of the best components.
"Often a good fit is more usable than a system of the best components." Very wise words.
Hey Will, I have also done a few tests on my cells and I have discovered that when I do a one C charge / discharge at -15 degrees F. I receive roughly 85% of the capacity when compared to one C charge / discharge at 70 degrees F.
These cells are perfect for cold weather applications when I use a 24 volt -> 12 volt converter. I lose roughly 5% in efficiency, but I need these cells to work in negative temps for the application that I have without the cells being destroyed.
What 24 to 12 volt convert could you suggest for me? I work in cold Temps so I am going to try this route. Thanks in advance!
@@entune85 I bought from AliExpress the RCNUN model RC241230L as 30 amps was plenty for me. I tested it using the 150 watt discharge tester Will demonstrated in one of his videos. I tested with a load of 150 watts on the output side, and saw an incoming draw of roughly 156 watts. So that would be slightly better than the advertised 95% efficiency.
I'd put them in an insulated air tight box something that would hold in the warmth and not lose it.
@@herbertwerner2287, I do not trust or want to risk an insulated box being able to keep the temp above freezing. I have a remote hunting cabin where I attached a solar Panel to charge a bank of 8 LiFepo4 batteries that I put in a 50 gallon plastic barrel that I dug into the ground. This works great as the ground is above freezing because of the insulation we put down. I have a breathing tube and access panel as well.
@@Aaron_Peters Oh I see Aaron, ya I didn't know you where doing that I thought you were asking for an idea of how. I like your idea, I had thought of that myself and then forgot about it. Plus I would just think that might be all around safer to have them where if anything were to go wrong with them they would be in safer place.
One can appreciate the humility of your attitude regarding your work. I enjoy the informative videos you provide and encourage you to keep up the good work.
I think they are perfect for a garage/out building shop where you need high amp out put to run an electric motor for an hour or 2 and you don’t temp control the area.
Good job on seeing your mistakes! Respect
Puts out video just as I'm looking at these, hmm the fast charging is what interested me and the temp range..
I think they're great for telecommunication towers.
We use 24v DC systems. This would help with the long term cost of keeping a highsite running with backup power.
Would also combat the theft problem due to their weight.
This is great, I ended up ordering a 12volt set to test out what you said before because I disagreed, also I intended on using them in a stationary set up. I just moved from your part of the world to an off grid farm I wanted these to run some heavy equipment in the barn, I’ll let you know how it goes. Thanks for the update!
How did it work out for you?
I think the insane longevity justifies all of it's flaws. I wanna get these kinda batteries for my electric bike in the future. I know it's not gonna be cheap and it won't have high capacity, but really high longevity and small charge time are very important for electric transport
Not really.
@@IndenturedUA-camSlave lol.
@@IndenturedUA-camSlave My LiFePo4 battery was tested by driving a steel rod through it. It didn't catch fire. The massive cost of Lithium Titanate is just too high to justify its widespread use. Maybe in some specific applications they can be justified, but doubtful they will ever be mainstream.
@@michaeldoherty2289 they are already mainstream in buses in cold countries where
-safety is critically important
-charging speed needs to be super high
-charging in low temperatures is required
-high longevity is needed so they wouldn't need to be replaced every 1-2 years.
and they work perfectly there
@@TabalugaDragon I think they are used mainly in consumer electronics, probably because they use small batteries so the high unit cost isn't as much a factor. Don't get me wrong, they are really amazing batteries. I would never argue that they aren't superior. It just that the cost factor for large batteries is making them very difficult to justify compared to other chemistries.
I agree about the cost but the LTO w/6cells (if you have the money) should do fine in a nominal 12v solar application so long as your battery capacity is well matched to your solar array. Even solar modules made for charging 12v circuits typically have an Vmp of about 18v and there are programmable charge controllers that can configured to operate in the optimal range.
That said, the loads would need to be checked for higher voltage tolerance or use a high efficiency dc to dc converter.
LTO is most used lithium type in car audio at the moment. Works very well for that application and majority of cars can handle 15-16V charging voltage. No one uses BMS but I've seen some using balancers. I don't have any because after half a year of use the voltage difference between cells was only 0.01V, I had the cells in paraller for 24 hours before assembly
Man, we always know you'll serve up the truth! Thanks for revisiting Titanate - as others have said, it takes integrity to clear up mistakes & misunderstandings, and I really do commend you for that. You provide thoughtful and reasoned explanations for what chemistry is ideal for different applications. The fact that we may not consider Titanate the most ideal chemistry for solar power systems doesn't mean it's not incredible technology! I always appreciate your critical approach because at the end of the day, it's just too easy to convince ourselves that things are either 100% good or 100% bad. Life - and battery chemistry, alike - is typically a bit more nuanced than that :)
It's not biased to advocate for the appropriate technology for an application. I've watched a fair amount of your videos all seem fair. Thank you for your sincere content.
Only honest people accepts ones mistakes
It shows great character and profound respect
Great job keep it up
It is so refreshing to hear someone calling sources out and saying it as it is, without the typical b.s.
And you use the same approach to yourself. I love how you are purely about the knowledge and discovering ways to push new battery tech with new inverter tech with new solar tech to their limits. And your own limit.
Thanks. This video clarifies everything with respect to the differences between LTO & LiFePO4. Both have their advantages and places. You can puncture or freeze an LTO but LiFePO4 is perfect for me in a warm climate.
Yet another reason Will is my go to channel for any solar questions I have. I've been watching him back when he was living in RVs! Way to go Will!
Sounds like a prefect fit for a boost/buck converter if wanting to use it for 12v applications
you could set it up as a 24 or 48 volt system then use a 12 reducer to get what you need if you need 12v
When the cost comes down, I am really attracted to the idea of getting 55 years (before they get to 80%) out of them in a solar application. That makes potentially a several hundred year use case...
I bet in a low temperature environment the calendar life will be extended.
No one is perfect Will. But you are damn close to perfect. Lol. You have no idea how many old ladies watch your videos. Seriously. Out of the 55+ year old women that are nomadic about 75% know of you and equally love you and are so proud of you. Brings tears to my eyes. Seriously. You are every mom and grandmas dream child. Just know you are loved by many. Thank you for being you.
You must've had a dream about this video, looks like as soon as you woke up....you ran to the camera! LOL, love your stuff, Will.
Good job Will. Everything has it's place, and LTO's could make for a better solar system if you really need them AND if you can afford the technology. If you can't use something because you can't pay for it, then it doesn't matter what it can do for you.
I like how you put people in their place with facts.
Bro, I love your channel. I have learned so much. Thank you for all that you have taught me. It has made a huge difference in my family’s lives.
if there is one thing us human All have alike is we all have made done said mistakes. now as for people who can catch correct and be willing to admit those mistakes well those are the rare and exceptional folks like yourself sir keep up the good work.
Love your sincerity and honesty and your knowledge never ceases to amaze me. Keep producing these videos.
You say 2 to 4 times the price.If it's 2 times the price and 25 000 cycles then we're golden.Nothing beats that.
A now I know why the prices were all over the place. Different grades. If they're going to sell 2nds or worse they should be labeled as such. Thank you Will
Having the integrity to correct an error will serve you. Don’t let the losers who attack you to try to raise themselves get under your skin. You have one of the most informative and honest channels in this media. Keep on track and it will be rewarded.
In so many places where I'd use solar, I'd use lithium titanate for its cold tolerance.
Same story here in Australia with our heat !
Thanks for the info. I just bought my first 16 cells of lithium iron phosphate. Thanks for the quality content.
Be careful. They are addictive.
Congrats on redoing this, admitting the errors in your earlier videos, and just being you. :)
Yes, these have negatives as compared to LiFePO4, but they are a valid option with some positives when using A Grade cells. (The biggest issue I see is for people wanting to use only a 12V system, but most home setups will be either 24V or 48V.)
I love my 100 Ah LiFePO4 DIY battery I built after watching Will's videos. I used Sinopoly cells, a Daly BMS and a water tight plastic amo case. It works great in my sailboat to power my 12 volt systems and 40# thrust trolling motor. I charge the battery with Renogy 100W suitcase panels. I just bought another, so 200W next summer. :) Thank you, Will, for showing me the way!
I have a LG 6s BMW LTO as a 12volt car battery! Here in Illinois it comes in handy, due the winter months!
Seen too many guys lead acid battery freeze during winter!
Smart idea
I do like the video Will well done. Thanks for the test results as it directly relates to my LTO batteries. I see you point about lithium phosphate batteries. They are the best and I agree with that. For me it is the cycle life that grabs me and the low temperature charging. As you mentioned in the future other types, maybe solid state, and yeah changes will come as time passes by, and so will the batteries I will use. Enjoyed the live stream chat last night. And thanks for addressing LTO batteries and the issues you talked about. Great stuff !!
Thank you Will, you just proved why the Elechive by Zero Breeze has a 35v min voltage for solar charging. They even made their 100w panels to act like a 24v panel ("Our 100w panel is customized with the output of 35V."). Just what we don't need. I canceled my order when they started flip-flopping between 400w solar and 800w solar charging.
Still. I look forward to your review, as they said they were sending you one.
That system would be too complicated, not to mention all the trouble one has to go through to get the authentic batteries! Thanx for your honest input, like you I’ll stick to lipo 4 until the technology gets better! 👍
True science doesn't care about appeareance, it cares about accuracy. Thanks Will!
You deserve lots of credit for making this video and explaining how nd why you made a mistake. Most people's ego would not even think of believing they could be wrong or admit they where incorrect.
Bonus points for the correction. I still think those may be the ticket for my weekend home rail caboose I am building. I am in between heating a LifePo4 pack to +5C when needed or go with this chemistry and it just works. I need to run from -10C and up.
Nice to see som usefull stuff again, not only your car, your house, your cats or your other stuff.
Keep it up man, your still my nr1 youtuber 👊👊👊
These really shine in remote outdoor solar applications like radio repeaters, mesh nodes, and weather stations where you will encounter sub-freezing and possibly very hot temperatures. I wish you could find deals in a smaller form factor that 60138, 60160, 66160 as these are overkill for LoRa mesh nodes (and you have to do 2S for most of these applications). I am experimenting with Li-ion and LiFePO4 burial beneath the frost line for LoRa in Arizona where we get both high and low extremes.
Great update. Always learn something from you Will.
Thanks buddy 😁👍
Can you get your hands on some alternate technologies like zinc bromide flow batteries and test them? I know Redflow out of Australia makes a good zinc bromide flow battery.
Nice video. It was great to see you get results consistent with others. Obviously, charge rate and having grade A batteries will make a huge difference in results. The large dynamic range of this chemistry is interesting to me. Finding the right application might be a home run for this type of battery. Thanks for all the effort you put into your videos. It's greatly appreciated.
Much respect for correcting a previous video.
Luckily you did a little ;-) That wouldn't have kept me away from going to use LTO on my scooters to transport the necessary energy. Thanks for giving the basics. And my trials will let me see how good LTO will be performing in real day-to-day use.
Thx man, I really like you videos. Is really helpful to avoid mistakes.
Best wishes from Germany
Great job explaining Will. Its NMC for me for now. If I ever ware out my Tesla bank I'm going to switch to lithium ion phosphate. I would love to build a portable High amperage welder using LTO cells.
All of these products are best for a certain application, it’s just understanding what the best solution for your application which is important. I agree with Will btw, it’s unarguable that LiFePO4 is best for solar off grid storage right now, but like everything, it will change over time. Probably better to only consider the payback over the next ten years when buying, because by then there will be far better and cheaper options to upgrade to.
for an EV taxi/delivery they are great, you can recharge multiple times a day quickly and last forever.
The question is, how much will the price drop, compared to other chemistry over the next couple of years
I do agree on price being not the best. But when used wuth a proper BMS. You can indeed use them effectively in a 12v system. Also the high C rate actually helps in a 12v system since 12v obviously draws more Amps than a 24 v system
Also never charge a yin long over 2.8v trust me
Cant help but feel this dudes passion ! He is just rocking!! Wow
With the various current range and future cell technologies I think there is an opening for a programmable management system.
Imagine if you could enter the nominal voltage, upper and lower voltage, percentage of capacity to use, temp monitoring parameters, maximum charge and discharge rates; then the management system would allow you to run any chemistry with full or limited capacity (for longer life). With the low price of microprocessors - ARM processors cost cents in volume - this is eminently achievable!
I see LTO incredibly useful for remote antenna stations. The extreme durability of LTO and the wide temperature range make them ideal for that application. The environmental conditions would destroy any other lithium chemistry in short order.
You can set custom settings in BMS for balancing.
awesome work! You got my trust to follow your guidelines to build with Lipo batteries.
Integrity is very RARE here on UA-cam. Very refreshing Will!
Great video . We all stumble or are wrong at times . But owning up to it or not , shows ones character . Be safe ,, Gubs
Great video! In science mistakes can happen, it's normal. The real mark of a true scientist is the willingness to update one's views based on evidence.
That being said, the application I'm really interested in for these is replacing sla car batteries with a 6s array of LTO. Based on what you said about changing in 12v applications it seems like their full potential would not be able to be utilized. But I'm not sure if it would really matter if you just wanted the short burst of high current to start the engine. One could potentially use an active balancer to help mitigate cell drift rather than a bms since the balancer is always on and can run at pretty low voltage. The reason I'm so interested in this is the cycle life of lto. A pack of those could potentially outlast the lifetime of multiple cars. With sla's needing to be replaced every 3-4 years and costing ~$120 the savings by using lto could really add up. Not to mention the reduction in waste production and CO2 emissions from making all those sla batteries.
Will, Most of your viewers know your are 100% genuine and honest. Viewers that think your a shill are completely off there rocker, or maybe there meds. Well done.
Hi Will . Your Awesome. I Love Your Honesty . If you ever YOU MAKE A SOLAR POWER GENERATOR .
I WILL BUY ONE .
YOUR KNOWLEDGE AND DEDICATION TO FINDING THE BEST PRODUCTS FOR ALL OF US WHO WATCHES AND DEPENDS ON YOU IS " 1 👍 .
Thank You Will 😊
They are awesome for stereo systems when you need current and lots of it
I like your bed hair! I would even had recognized it until you mention it.
Thanks . very interested in LTO. Appreciate your honesty.
I like the lives my man. Just wanted to share that here as well.
Also a fan of you doing Instagram again or maybe UA-cam shorts would be an option for quick videos. I don't know much about that.
Thanks for your honesty and a simple mistake is expected from us all. Great job with what you do and thanks for the information as it is very important to us DIY people. Looking forward to your future videos and ideas!
Respect Will! Thanks for clearing things up.
Thanks for your input man, love this channel. I really like the temp range and low cycle degradation ! Could have some great applications up here in Canada !
Thanks for making a video on that, and showing the errors. I and few other UA-cam users did point to you about these issues few months ago, so good you finally done some other tests.
I agree LTO, are a niche, and generally not preferred for solar. As of calendar aging, well, that is still something I would love to see, because there are different opinions on this. LTO still is good for very high C rates (~10C), even if it means lower efficiency in energy itself. I don't know what exactly applications require 10C, but maybe some power tools, or spot welding, could benefit from it. I believe the LTO do have really good cold temperature performance, so maybe there are some applications where it matters too, and are inherently safe. Like satellites, with frequent temperature swing, and a lot of cycling in short time.
Personally im interested in these because of the longevity and high c rate. Might only get 10 minutes of good sunlight in the winter here lol.
I agree with your conclusion. When you weigh the pros and cons LiFePo4 is simply the best chemistry for solar that we have right now. I can build a massive battery bank that is really cheap and when it wears out in 20 years or so I will almost certainly have better options available. I think size does matter even in stationary applications. A 30 kWh pack isn’t that big for LiFePo4 but would be much bigger and take many times more cells with LTO. Not to mention that you have massive 280ah cells for LiFePo4. Imagine the sheer number of parallel cells and bus bars you would need to use LTO for a large project.
Agreed! Great points.
@@SystemsPlanet That’s true but even the bus work will take up a lot more space because of the sheer number of cells. I also wouldn’t mind building another battery bank in 20 years, especially if there is better technology then. If I invested all the money I saved going with LiFePo4 over that period I could afford an enormous battery. The opportunity cost of LTO right now in incredibly high in my analytical mind.
i think the shelf life is 25 years... so no worries you should be around when those need replacement ;)
These cells make for fantastic battery packs if you value safety, longevity and ease of battery pack building in extreme hot or cold climates. Evs are a good use for them if you don't need to be super space or weight efficient.
I would like to see you building and testing Super Capacitors for solar.
I’m planning to build a LTO battery for a start battery in an off-roader 👍 able to handle the high charge rate of a large alternator and loads like a winch
Well, 6s or 12S lto batteries work good when used with 12/24V AC inverters, you can use most of the lto capacity. But yeah, only a few solar charge controllers will let you charge them to capacity. Don't need an expensive bms, I use a supercap pcb with an active balancer (capacitor types).
Ahhhh thanks for clearing up that conundrum - Your earlier superstition that Titanate for super long life, fast charging with a downside of high cost, weight and bulk is still valid - I've concluded that Lifepo4 in 4S is best for my motorcycle starter & RV house battery because they are most comparable with the alternator outputs (14.2V) - and li-ion for my ebike because of power density and compact size - its a horses for courses approach - as you said in your earlier post Titanate would be best for a remote station were servicing was infrequent and where temperatures might be sub zero - it could well be "Rocket Science" at least in application : )
Good video! Just keep doing what you are doing. The more successful you get the more there's people with differing opinions. All you can do is go off the best information you have at any given time. I hope the comments don't ware you down or change you. Stay positive, you do great work!
for my application lto is the best (so far) to use. i need long life, a low self discharge rate, wide temp range and high c rates for automotive use. Sure they aren't cheap, but then replacing lead acid every 3-4 years isn't cheap either. Gone are the days when you could hit a auto parts store and grab a new LA battery for your car for under $40.
What is the configuration you chosen? 5s? How many pararell? What BMS you chose? Also what cells did you chose? (Producer)
Hey Will I went down a UA-cam rabbit hole and found a great video related to your topic and channel, about how Chinese lithium batteries are made, QA’d and graded Class A, B, and in some cases C. It’s a little rough to listen to but if you did a reaction video with it your viewers would come away with a whole new understanding about lithium batteries, especially those coming from China.
The first comment got caught in spam guard because it had the UA-cam video link.
Sounds like you could use LTO for a 10.8V system, but LiFePo definitely looks like a better option for most environments vs these. LiPo, or other Lithium chemistries are also better for many uses, especially mobile applications.
Can you explain the different grades of LiFePO4 Battery's, had someone try telling me there isn't grades on them. Thanks and a very nice video.
How cold can lithium titanate be charged? How cold can lipo be charged? And if you do a video comparing might as well throw lead acid in there too.
I love your content.
Thank you! I was thinking to get them for the van but its no good for 12v... The only good thing is that they dont blow up like other Lithium chemistries.
Will, what's your opinion: Say ya want to maximise the available energy and choosing between 11S and 12S. 12 S will have about 8% more energy from the extra cell. But ya have to limit total voltage to 30 volts for use with typical 24 volt equipment. So the cell voltage is 2.5v max. The lost energy not going to 2.6v is roughlyabout 4% I estimate from 2C curves. So I conclude for energy storage its 4% better to use 12S limited to 30v than 11S. If the BMS balancer threshold can't be adjusted accordingly, then use an active balancer. Perhaps there is an energy boost from the higher average operational voltage of 12S too. Your thoughts?
Who knew that great audio could be achieved with the dead cat on the back of your head.
Much respect from a British Subscriber. And Happy Thanksgiving.
I think it would be fine to use lithium titanate batteries with a programmable all in one like the SOLARK. That thing is awesome if you're looking for all-in-one EMP proof solar setup it's just awesome my brother has one on his house and he can charge his lithium batteries have a good tie and charge the batteries at the same time and invert for his house absolutely amazing device
Oh dude, far out...whatever you said, it sounds heavy, but I dig it. Keep those honest awesome vids coming cuz my cool flop loves being off grid. 🥰👏
Hi Will. I enjoy your videos. I have a MS in Physics and pretty much understand everything you are posting. However, I have a specific application question. I have a 4WD golf cart. Currently uses 8 each 6 Volt 200 A-h batteries. I would like to replace those with lithium of some type. The buggy uses 2 each 18HP or 13.5kW electric motors. The motor controller is a 600 amp. So, it pulls a lot of peak current. I think it drops back to 100 to 200 amps just rolling along. I can buy 12V 100 A-h LiFePO4 batteries for about $150 each. A 4S4P setup would be $1200. However, I need at least 200 Amp Continuous discharge and 600 Amp peak. The LiFePO4 batteries fall just a little short of this. To replace the Pb Acid batteries costs about $1200 as well. I have also looked at LiTi or LTO and 22 each 40 A-h cells look attractive at a comparable price. However, in both cases the BMS limits the discharge. I am seriously thinking of using 20 or 22 cells of LTO without a BMS. What do you think??
These are all great points. Considering the use case and how the batteries perform best - both LTO and LFP are great choices. In Texas where the Energy market is deregulated - energy storage beyond solar (distributed generation) is becoming more important. Some suggest the as a result of growth, expanding renewables and as well as retiring coal power plants that energy prices will become more volatile and ultimately more expensive. Now to build renewables such as wind and solar throughout the state it's imperative to build batteries next to them else congestion occurs and prices in the real time market or between locations get's wonky. But even with large scale battery solutions - no matter the battery type - I still think the solution comes back to baseload or nominal battery storage within a home. In this case, as the market in ERCOT/Texas allows through an Energy Company - a battery in the home could utilize a high frequency arbitrage algorithm via price triggers to charge quickly or discharge quickly. The concept of buy low sell high works much better if it's responsive to the market which LTO would allow. After playing with the configurations, cost benefit analysis - I think the solution in this case is BOTH LFP with linear predictable charge and discharge then set aside 25% of the battery capacity to the LTO which could arbitrage around it and could handle 15 minute spikes where prices can go from 0.01 cent kwh to 1000 cents kwh. This is a use case where both batteries would provide a great deal of benefit both for the home/end user and ultimately the grid. Lengthy but a unique application yet still not as awesome as satellites needing LTO battery - that's cool!
My system is a 48v hybrid off-grid system. I put together two 48v 200Ah Lifepo4 and hook the two in parallel to get 400Ah. Almost always when supplying load to till it cut off point. 1. How come the other 48v tray does not drain to its lowest cut off voilts? And when the system charges back up.
2. Does it suppose to charge one tray at a time?
I all so heard you have mention in one of your clip saying that battery do not like to be parrarel .
3. LIke to know why and how to make it like one another so it can supply load equally?
THanx for information. keep up the good work.