AGM vs Lithium Batteries for Sub-Freezing Solar Powered Camping
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- Опубліковано 5 жов 2019
- This video compares the performance of AGM Batteries vs Lithium batteries in the cold. Everybody seems to know that Lithium batteries don't do well once temperatures fall below freezing, but to make sure we have an accurate comparison, we need to see how AGM batteries fare once the batteries fall below 0C.
Sources:
To Be Updated. (I went away for the day I published this and left my sources at the shop. I'll update this later this week.)
Personalized Support (consulting): explorist.life/consulting
I learn something from you every time I watch. Consulting is a great idea and when I start my van build I will be doing a consult even though I plan a very small, basic system.
Great info, I'm not a RVer but here in Pa. I have used a 110volt battery blanket on my diesel tractor in the winter for years. What a difference it makes cranking that engine.
You had me at if a battery doesn't work below a certain temp it's not a battery. I know we had an extreme cold front come thru the pas week and sat at -25F for three days. Even though inside I do not run the heat when not in my workshop. So inside it was likely also -25 (even though R13 walls, floor and ceiling - no heat at all). So, the 100ah Lipo4 battery wouldn't even discharge so it would not turn on the diesel heater. The 35ah AGM sitting next to it did turn on and run the CDH (Diesel heater). So I had the heater running off the small AGM until the space heated up and the LIpo4 warmed up enough to swamp them out. Then the heater could be left on running off the larger 100ah.
Just purchashed 300ah battleborn batteries and victron everything else, for a teardrop trailer im building. We are installing it in now, everything looks good so far! I watched your video about a month to late for my last build over a year ago, I just wanted to say thank you for helping me understand all thing battery related. Your videos are very helpful.
Awesome! So glad you've found it helpful
Thanks for putting all this info out.
8:59 - Dude....I love it. Subscribed.
Thanks anyway. I know I need to do my homework re: deciding what my systems will be. Again, thanks for your help
Great video, good info and entertaining! Thanx
wow thanks for the quick response sorry didn't find it on my own.... I watched about 3 hrs of your videos today.... I need a bourbon
useful info and well-presented - thank u
.. I live in Canada and I'm converting a cube van..
Thanks for your video I was going to store my batteries in a compartment under the vehicle.
Awesome! Glad it helped. Thanks for watching!
As a Canadian I'm going to use a Wave 3 on the low setting to keep my batteries warm.
Thank you
Ty sir
good info about the batteries
Awesome! Glad it helped. Thanks for watching!
Nice one Nate. I note you say power audit. I guess I’d say peak energy audit (Wh) on a daily basis and peak power (W) audit both at a given max/min temperature, in order to size batteries so C rate on discharge and charge can be fully considered.
I thought about that but WOW that would make the power audit confusing... Example:
How many amps is your device going to use?
How many minutes per day are you going to use your device?
What temperature will your batteries be when you are using the device?
😂😀😂
EXPLORIST life Hence usually energy audit in Wh per 24hours. Saves confusion with amps if folk assume 12V, when it could be 24 or 48V. Of course an insight into peak power, C rates and temperatures also needed.
Awesome video, thanks for sharing your knowledge! I totally understand you should keep either type of battery warm. My question is when you get home from skiing and your van sits outside is it fine for either type to be below freezing for an extended period of time? (My van sits outside all winter) Or, do you recommend pulling your batteries out and putting them in the house when not using them? Thanks again for all the help!
In the Case of Lithium, It doesn't matter. Just charge them up and disconnect them if you are planning on not using them for a while. Here's a quick video directly from the source: battlebornbatteries.com/faq/how-to-winterize-batteries/
Are those temperatures external or internal? The battery do warm up as it discharges. Possible the reason why battery boosters tend to start the engine on the second/third attempt in extreme cold.
Okay, you guys are the only place that I think might be able to answer this question properly. I'm currently in the process of converting my pickup truck into a camper. I have my batteries and lighting wiring done But my charger hasn't come in yet. Neither my solar charger or my shortpower charger. I have an emergency trip. I have to take and I need to know if I can charge up my 200 amp hour. Lithium battery with a standard automotive style battery charger.
Great video. Have you done one regarding batteries stored at high temperatures and reduction of capacity? Gets over 110f pretty regularly where I live…
That's not really an issue.
Good boy Nate, I am worried about this living in the UK (cold)
Migrate to africa bro. You're welcome.
Very informative video 👍🏼 My question, I woke up this morning and noticed that my epever 4215bn solar charger was off and my 120ah 12v lifePo4 battery is giving me a weird reading on the multimeter. It is winter where I live so I let it sit under the sun for a while until I got a stable reading of 5.456 volts. Can you explain as to what happened there? And how can I revive this battery since the 4215bn won’t charge a battery unless it is above 5v or something, cheers. 👍🏼
I guess the it is either ruined because it was charged while to cold or the Battery Managment System (BMS) has turned the battery of until it reaches the working temperature again... It has been 3 months now, I guess you know by know if it survived or not?
The best thing I ever did - swapped out my four Trojan AGM 12v batteries for four Battle Born 12v 100aH batteries (24v system). They are beasts. Wish they would include that $7 battery carrying strap with the purchase tho.
Nice! Yeah, our AGM to Lithium upgrade was a game changer as well. Thanks for watching! :)
Great stuff man. Are there any 12v battery blankets. I have 4 BB batteries, but the blanket they sell is very expensive.
Yeah, their tested one is super pricey. I don't have any first hand experience with any others though.
Exploring putting a little heat into the battery cabinet on my motorhome. I currently have 3 Battle Born 100AH batteries (will eventually be adding at least one more) but for now, my question would be, if it would be prudent for some additional heat, by adding (as farmers did way back in the day) dangling a 60 watt bulb within the cabinet, and occassionally checking the cabinet temperature. This would be for 'short-term' usage, for one to two months, yet I know since heat rises, it would be warmer at the top of the cabinet, not necessarily where the batteries are in the bottom, but may significantly help compared to nothing at all? If additional heat where needed two bulbs could be used. Just thought I'd run this by you, and see what advice/suggestions may come to fruition as to the idea, or making it work even better! I do have 30A service to our coach at this time, and of course both the house and chassis batteries are in this compartment...chassis being two AGM's.
I think that's a fine idea (obviously taking all fire safety precautions into account).
Good info. Just curious how much temp improves with heating pads ? Does a typical hearing pad buy you 10 degrees or what ?
The new heated Battle Born batteries will heat up to 35 degrees and hold steady: battlebornbatteries.com/product-category/lifepo4-batteries/heated-battery-kits/?afmc=explorist_bb67
What about hooking up a battery blanket? It could be used to keep the temperature of the battery above 5 degrees Celsius. I am just not sure how much current the would draw. I am thinking about trying this out. Build a super insulated box, with the battery and battery blanket inside and see what it takes to keep it warm when it drops to -30 Celsius. I want to camp during ski season, so you understand why I want something to work during the coldest times.
That would, indeed, work. It would just need to be figured into the overall power audit for energy consumption. We also travel to ski, so we understand the necessity completely and it a large reason we have out batteries inside the climate controlled living space.
Good info.. Off grid has different things to consider
For sure! There's always more to consider. Hope this helped!
I may have missed if someone else asked this, but what kind of heating pads do you recommend and in what configuration/set up? I have a Lithium battery on the way that claims to have low temp charging cut off, but it's a budget battery and I have some doubts. I am a bit hesitant to add heat to a battery for fire reasons lol.
Battle Born has a specific heater they recommend (it's in their store). I hesitate to make a specific 'across the board' recommendation as there are some battery manufacturers who don't recommend using a pad heater and I've seen batteries melted due to pad heaters.
What do you do with your lithium batteries in the winter with solar charging? Do you disconnect them so they aren’t charging when you’re not heating your living space? Does the BMS handle this? How about running a generator to charge in the winter time? Do you keep your batteries disconnected until they heat up? I’ve used AGM in the past and was unaware of the issues with charging in freezing conditions. Discharge capacity yes, but my concern is damage to expensive lithium batteries by charging with solar or generator when I get back from skiing to a cold rig and doing my nightly chores and topping off the batteries with the generator before bed. Thoughts? Thanks!
If the van is in storage, yes, I disconnect them. If we are actively using the van, just not in it; we keep the living space warm 24/7. And, at least with Battle Born batteries, if you try to charge them when they are below freezing, no damage will occur, the BMS will just not allow charging to happen.
Good video, where is that "pay for" site? Paying for good info is the cheapest way to go!
Oops! I forgot to add it to the description. You're looking for explorist.life/consulting
Hi Nate-what do you think of the Oasis Fierfly group 31 600 cca 110 ah? $480 maybe I can get it for less.
It’s for a system I’d like to put together for my small travel trailer. And my sailboat. Two different vehicles but similar. Fun! And thank you for your awesome help! Cheers to you!
I don't know much about those. 🤷♂️🤷♂️
Honestly, there is no circumstance in which lead-acid beats Lithium. Lithium works fine for drawing power from in sub-freezing temps still, and the act of drawing power from them also causes them to heat up internally. Lead-acid is just hopeless regardless, their capacity is much lower in the cold, and they only get worse as you try to use them because they don't really heat up. But of course, ideally you'd have the batteries inside the van, and heating to heat your living space, which also heats the batteries, making a Lithium win even more of a slam dunk. In fact, even if you need batteries that can be used normally at -35 degrees C, you still want Lithium - you just want Lithium Titanate. Those come with other drawbacks and benefits, but in addition to the decades long lifespan, they are temperature insensitive. The one big Achilles heel there is discharge efficiency, which is a very low 85%.
My Electric bike and my electric tools do not agree... In Finland where it is often -40c they take out the lithium cells from electric tools and use NiCd instead because those still work when it is that cold, lithium do not... The AH hour rating might go down with lead acid but they are still able to get a car started no problem when it is -25C. I am not so sure about Lithium when I have felt on my thighs how little power it has when trying to go up a hill with my Electric Bike at +12C comparet to +20c...
Hi Explorist Life … good video.
Too bad some UA-camrs are still insisting that Lithiums are no good, not cost effective, no history & therefore won't last 10 years, etc. I have a pair of 75AH LifeBlue LiFePO4 batteries in my RV. LifeBlue manufacture "drop in" batteries and actually have winterized ones (little cell heaters) that allow the battery to charge/discharge to -4 F. No info on their site as to how much current the heaters draw when in use. All handled via the BMS and no need for external blankets. My advice is, if you are RVing in -4F temps … drive somewhere warm! ;-)
Nice! Yeah, they are pretty great. Battleborn is actually coming out with a new battery that has integrated heating in it as well. It's already been released to the OEM market, but will hopefully be released to the consumer market soon.
I'd go to warmer temps in the winter, but the snow skiing is pretty shitty down there. 😂😀
I run 4 12v 250AH AGM in 24v configuration. Yes Lithium is the way to go when the cost comes down... I am on my 800+ charge/recharge cycle and have seen no loss of power... I'm not concerned about the cold as I would move if the temps got below 45.
I want to take that last advice but the corona hysteria = closed borders and I am trapped here... Managed to get to Finland 3 hours before the borders closed in full panic mode with a cargo van that was nowhere ready for camping 6 weeks ago. Did stay there 1 month before it got to cold so I went back home. Hopefully I will have my Ford Transit box car ready for next year and hopefully the hysteria will have died down enough to get the hell out of here... (North Norway north of polar circle suck...)
I guess, living in cold climates, I imagine scenarios like it dropping to -10F at night, in the wee hours of the morning, lithium batteries quit working…and won’t charge. Lead acids might be weak in that temp, but a person can conserve and still have juice, and they will still charge when the sun shines, or a quick 1/2 hour with the generator will charge them up quite a bit. I definitely know how good lithium batteries are, but there are circumstances where lead-acid just work better. When I am up in the arctic and start my diesel truck in -35F with an unheated battery sitting in an engine compartment…
5:25 to 5:40 of the video tells it like it is if you are planning an being in the cold much. It is what it is.
Hi Nate, this is a tad off topic, but of the videos you have put out lately, this seemed like it might be the best place to ask it. So, for a travel trailer of modest size, or just in general, is there any advantage to making you battery system 24 volts or higher instead of 12 volts? Thanks.
I only recommend 24v systems if you plan on installing more than 1200w of solar power or more than 3000w of inverting power.
@@EXPLORISTlife Thank you very much for the reply. Do you have a video you have produced that you could point me to, to help me more fully understand this area? Also, if say someone has four or perhaps six 100 amp batteries, are they wired in parallel, and then the amperage modulated as it comes out, to maintain the 12V configuration? Thanks Nate.
I don't. Not yet anyway. But it boils down to being able to use 1 charge controller vs 2 as well as the wire sizing requirements of inverters greater than 3000w.
Batteries wired in parallel will keep their same battery voltage throughout the bank regardless of if it's 2 batteries or 200 batteries.
@@EXPLORISTlife Thanks very much once again. Thanks to the videos you did on wiring, I think I am now good with the ideas you presented there. I think the question that was causing me difficulty was, "if there is a charge controller to regulate the amount of volts the battery is charged at, what device plays a similar role when that power is released." It just dawned on me that the power is released as it is drawn by the various items using the power, so there is no need to regulate it, because it is not going to be released at a rate higher than what the devices are asking for.
I think my beginners mind is beginning to make some gains. Thanks in no small part to what you have so considerately posted.
What's the best solution for a battery box? My batteries have dropped to 1 degrees this winter and I want to keep them above 5! I was thinking some removable polystyrene foam in a wooden box with vent holes in the box?
That sounds like a reasonable plan.
Have checked out batter university website... Vancouver,Canada. Yep Canada!!!!there is a long history with the people on this site.
What are you talking about?
I apoligise if this question is in the wrong place to ask but I've just upgraded my AGM to lithium and I have two banks of panels, one is 200watts x 5 and the other is 330watts x 3, these go separately to a Rneogy rover 60amp regulator, no problem during summer to charge but a bit slow in winter, after looking at your videos about panels in series and parallel, I was wondering if the separate banks have different voltages, which voltage would prioritize the regulator, high or low or can't you do that?? if it would work, I was going to take off a 200w and add a 300w and do them in series parallel to lift the voltages and see if they would be more efficiently charge thew batteries, the two voltages of the different panels average around the 20v mark each???doable??
Hey, Kevin Buckley! I appreciate you taking the time to ask your question, but unfortunately, I don't have enough info about your specific question to provide an accurate answer, but here is a playlist that, if you watch all of the videos start-to-finish (and take notes 😉), you'll have a REALLY good idea of how to design a solar array: ua-cam.com/video/Jkbs84sBHsg/v-deo.html
Alternatively, I have some of my most common solar array setups pre-built here: shop.explorist.life/product-category/all-products/camper-wiring-kits/solar-charging-wiring-kits/
I have a battery bank of 3 agm 100ah batteries. I will not be using it in cold weather. Can I leave them in a sub zero environment where temps may reach -35C? Would leaving them in the sub zero temps but connected to a battery charger/maintainer be of any value in this sub zero condition? Thanks
That's a great question for the manufacturer of your batteries.
COOL, (Yeah, what he said)
I just bought three BBBatteries and a Victron 150/85 CC and a shunt. What FUSES do I need???? ??????????????????
Nice! You should check out the wiring diagrams at www.explorist.life/solarwiringdiagrams and it will show you what size and types of fuses to use around various sizes of setups.
Do you have a video on temp control heating the battery in a cooler environment?
Not just yet. Sorry about that!
I've been looking at a system to do this using heat mat controller . But most temp ranges supported are way to high i feel. The btc201 is the best option i found so far. Id like to try it with 10x20 15w pads between pairs of batteries. If u have time to look and let me know your thoughts I'd appreciate it.
Here in Norway most Lithium batteries now come with automatic heating.
I'm using valence u27-12xp and they are lacking that function
What about storage? Like power tool batteries? Nothing 'bad' happens they just have reduced power am I correct?
You could look up the temperature discharge curves and BMS settings of power tool batteries if that's of interest to you to see how they compare.
Does the sub freezing problem apply to automobiles powered by lithium ion batteries, like the Teslas, or Nissans, or GM or European models? Or do those auto mfgrs provide some heating systems for batteries to keep them warm overnight in winter?
I'm sure they have protections/heaters in place, but I don't know specifically.
Teslas has heating for their battery, I do not know about the other...
That looked like apple juice to me. Definitely from the Okanagon region, age at least 16mths.
It MAY have been from a box, but it definitely wasn't apple juice.
So buy lithium if you live in cold climates like north dakota? I thought the 200 amp renogy was the only battery I would need for heater and laptop in the cold winters up here. But now with this video i am thoroughly confused.
Lithium, although more expensive, will be more bang for your buck as long as you can keep it above freezing (More info: ua-cam.com/video/pnCJFXWEVYs/v-deo.html). As far as your energy consumption needs, you should do a power audit. Here's a tutorial for that: ua-cam.com/video/a406IxiU-Xg/v-deo.html
Can I connect Battle Born Batteries in Series or Series parallel?
Absolutely! Battle Born Batteries are capable of being set up in series up to 48v. Series/Parallel is also fine in that same regard.
Keeping lead acid batteries inside when charging is very dangerous because of the hydrogen build up. That is why they are stored out side in a vented compartment in campers! I have also heard that even putting the slightest load on a battery will "warm" it up, so that should be taken into account.
Lead acid batteries do, indeed, need to be vented to the outside or actually stored outside. Lithium does not offgas like lead.
I didn’t realize that lithium batteries are ok to discharge 100% while agm can only discharge 50
Is this really accurate I thought lithium could only safely discharge 80%?
Really love your videos! But I think you may have made a mistake in this one. You mention that AGM batteries do not like to discharge below 50% capacity, but according to everything I have read that is not entirely accurate. Many AGM battery manufacturers list up to 80% depth-of-discharge as acceptable. There are some AGMs that are only rated for up to 50% DOD, but it is mostly flooded batteries that do NOT do well when discharged below 50%...
I have indeed made no mistake in this video. Check the ratings on the Victron AGM batteries. Cycle Design Lift: 400 Cycles @ 80% discharge, 600 cycles at 50% discharge, 1500 cycles at 30% discharge.
So, you can see that even going to 50% is really hurting the battery over the long run.
Source: www.victronenergy.com/upload/documents/Datasheet-GEL-and-AGM-Batteries-EN.pdf
@@EXPLORISTlife Ahha. I see your point. Thank you for the response!
Just put a grow mate with a thermostat and you don't have to worry about it. Uses about 35w.
That still needs to be figured into the power audit, but yes, that's similar to the method I mentioned in the video.
32degrees is not cold my batteries see 30days below o degrees and probably 7 days of negative 20. How would the lithium hold up? My 6 6volt cart batteries are 7 years old and still running around 80 percent.
Good news! Battle Born Batteries now have a heated battery option so that they will function orders of magnitude better than lead acid if your camper spends time at sub zero temps.
FLA (flooded leaded acid) won't freeze until -78 Degrees Farenheight fully charged. 20 degrees when fully discharged. (ruined anyway). AGM's are not a good choice for RV's (they don't like long, deep cycle discharge, better for high short discharges as in car batteries)
*I'VE ALWAYS BEEN TOLD THAT LITHIUM BATTERIES WORK BETTER IN COLD WEATHER? I DON'T UNDERSTAND? EVEN MY WIRELESS THERMOMETERS FOR MY FREEZER SAY TO USE LITHIUM BATTERIES DUE TO FREEZERS COLD TEMPERATURES OF -14 F°.
AM I MISSING SOMETHING HERE? PLEASE EXPLAIN ANYONE?
I've never really heard that; not in regards to big batteries like we are discussing here (AA sized batteries may be a different story since high amperages are not being pulled from them). The common myth has always been that AGM or Lead Acid work better in the cold; but it is just that; a myth.
Lead crystal might be worth a look in cold climates:
Still 45% of usuable charge capacity at -40C (-40F)
High depth of discharge at normal temperatures circa 1400 cycles at 80% DoD.
50% price of lithium
On the other hand they are heavier than lithium and may be more difficult to source in the first place.
SO little information out about those. 😕
@@EXPLORISTlife I found some pretty detailed datasheets on Beta Batteries website. The also had an undoubtedly biased comparison table LC vs AGM and lithium.
Would really like to see a thourough unbiased comparison Li Vs Lead Crystal.
They might just be available to our Antipodean Mates though.
@@TDubya811 In all honesty. I'm not interested in doing reviews for products that are difficult to attain. I'm interested in teaching people how to build DIY solar setups, and if you can't buy it, you can't build it.
Would like to see as well
How did you get to be so good at batteries?
People would ask questions, I'd google the answer to their question and learn more about it in order to answer their questions, did that a few thousand times and here I am!
Even "sealed" batteries vent hydrogen gas. Now it is a tiny molecule, so it disperses quickly, but it build up anywhere, combustion is instantaneous and explosive.
The danger with hydrogen off-gassing in RV applications with lead acid batteries is actually the corrosive nature of hydrogen potentially causing corrosion on the Inverter or other electrical component and potentially shorting it out (or simply destroying it).
Lead acid batteries do not offgas at a rapid enough rate inside of a non-air-tight camper to reach its flash point, flame point, or LEL (lower explosive limit.) so that's really a non issue. (Wow, did I just get to use some of my HAZMAT Technician training from back when I was a firefighter? Cool! lol) Now... COULD it happen? Sure, I guess...but that'd be a freak accident that would probably occur at the same rate as getting swallowed up by a sink hole.
fyi Tesla's for years has battery heaters and compared to the same era Nissan Leaf which did not heat the batteries the leaf lost a lot of ability to run and charge where the Tesla did not and that was with Li-ion
Guess I should have weighted till the end to comment.
I always recommend that with my videos. I spent 20 hours making this video as complete and thorough as I possibly could. Surely you can give me sub-10 minutes. :)
I always watch your video to the end. I should have known you would have known about grow pads.
@@richardobannon6301 Haha! I'm just messin' with you. Thanks for watching and for the recommendation.
what is your choice of bourbon
I'm an equal opportunity bourbon drinker.
I do love Tin Cup though.
Four Roses
Batteries warm up when used so instead of wasting power on heating pads why don't you use that power for things you need when they start to get too cold?
Mainly because they don't heat up at a rate that would typically be THAT useful. If you'll look at the Lithium graph, you'll actually see that the fastest discharge rates actually have slightly higher capacity ratings as the battery heats up a bit; but that is only 1-2% and perhaps not enough to deal with -40 degree F temps or something like that.
@@EXPLORISTlife What if you put some good insulation around them? It shouldn't take too much heat to keep them warm if they are well insulated. Maybe try sticking them in a cooler, and see how that changes thing.
@@odriew5014 Yeah, anything you can do to keep them above freezing will help.
On my Electric Mountain bike that only works if your batteries already is warm and you keep using much energy from it, if you stop for 5 min the batteries get cold and never heat up again and you struggle to go against the wind or up a hill because the battery can not deliver the power needed. That is with a 48v 495wh battery... This problem already occur at +12 to +15C.
How is this comparison with lead acid in the cold weather for starting a vehicle because I was gonna try lithium for my starting battery under the hood but since the cold affects it so much...I live in a really cold climate during winter so basically I'm kinda screwed?
I don't think Lithium is the best option for a starting battery as it's just really not designed for that. If your vehicle is hard starting during cold temperatures, a block heater of some kind will be your best option, IMO.
I had good experience with Optima Spiral Cell batteries for starting stubborn diesel engines in the winter... My 50Ah spiral sell battery had more cold crank amps then a normal 200Ah in the cold -25c. It really makes a huge difference with lot of cranking power for a diesel when it is cold as they then start a LOT faster. Also a Lithium start booster that can do 2000A starting power is good to have, they are expensive but small...
@@a64738 a buddy of mine had a few optima batteries and had really good luck with them but now their quality has dropped significantly his old versions lasted over 12 years now his newest one only 2 years and have heard the same from several other people
In extreme Arctic cold people generally plug 🔌 in their vehicles. Oil pan heater, block heater, trickle charger on battery. Consider fully synthetic engine oil as well. Change your battery more often, at least every 2 or 3 years. Putting a lithium battery in an engine compartment for starting a vehicle would be the worst thing you could do, stick with lead-acid and keep it charged up with that trickle charger. Of course you didn’t mention temps, so I really don’t know what you are calling cold, my advice may be overkill.
How about store lithium batteries in cold environment, store over the winter
Charge them up fully then disconnect them. That's all that needs to be done, at least in the case of Battle Born batteries. Check manufacturer recommendation for other brands, though.
@@EXPLORISTlife thnx
I want to get up to 48volts
Yep! Battle Born Batteries are capable of 48v max. You can see that in the manual here: battlebornbatteries.com/shop/12v-lifepo4-deep-cycle-battery/?afmc=explorist_bb67
If you don't have a way to keep them warm AGM will be the better option. They will perform (charge and discharge) down to -40°F. Lithium won't charge below 32°F it will only discharge. Depending on where you live and how you plan to maintain, I would stick with lithium for the next few year until they figure the cold temperature out
There are lithium batteries on the market now that have heating elements inside of them to keep them above freezing so you have full capabilities: battlebornbatteries.com/product-category/lifepo4-batteries/heated-battery-kits/?afmc=explorist_bb67
If keeping the batteries in a space that stays above freezing is not an option and heated Lithium batteries are not an option (for whatever reason), AGM will indeed be the 'best' choice understanding their extremely limited output as discussed in this video.
That's how I work too 😂
Manufacturers should really stop branding Lead Acid batteries with false capacities! If its 100ah but you can only use half of that, then just call it 50ah capacity battery FFS!
You know that’s apple juice
Close. Its fermented grain juice.