Seplos BMS V3.0 with new software. Feel the power of Firmware Upgrades!
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- Опубліковано 29 вер 2023
- In the last video, I showed you how bad the Seplos BMS actually balances. Does it even balance at all?🤷♂️ I discussed this with Seplos and they came up with a solution: a new firmware for the V3.0 BMS.
In today's workshop, we are going to compare the balancing action before and after the upgrade, we measure the balance current and use the FLIR camera visualise the difference .
And this is one of the major advantages of these BMS, as they can simply be upgrade with new software. This can provide bug fixes but also new features and functions. Just like Tesla, these BSM manufacturers just need to listen to the community and keep these updates coming to improve their products.
Can we make Sepos great again?
Latest Firmware Update for SEPLOS BMS V3.0 (and all other BMS):
off-grid-garage.com/battery-m...
SEPLOS website to download the update as well (please create a free account to download): www.seplos.com/download.html
Which BMS V3.0 hardware do I have and which Firmware file do I need to update it? drive.google.com/file/d/1f11r...
SEPLOS BMS V3.0, review and first test:
SEPLOS BMS V3.0 product link: off-grid-garage.com/battery-m...
How to upgrade the SEPLOS BMS3.0 to solve the passive balance?: • How to upgrade the SEP...
Seplos Polo: This battery has WHAT built-in? First look at the new Seplos BMS V3: • Seplos Polo: This batt...
Seplos Polo LiFePO4 Pouch-Cell Battery 1C high-amp discharge test. Does it get too hot? ♨️ • Seplos Polo LiFePO4 Po...
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Power of Andy's never ending persistence to get results! Thank you Andy as well as SEPLOS for their part.
Thank you. A community effort to get results. I'm just holding the camera.
Ciao Andy possiedo un box Seplos 3.0 con bilanciatore attivo Seplos da 2:amp problema mia e che il bilanciatore non si accende sopra 30 mv di differenza voltaggio mi puoi aiutare?
Good job Andy, so interesting to see the FLIR image of the balancing resistors in action.
Thank you. That was pretty cool, wasn't it? I should have used this in the past already to find such problems...
Thx Andy for your time, effort and engagement in these things. You are the manufactureres watchdog and our lighthouse in the market storm.
Wow, thanks!
Without you efforts Andy, where would we be, great work🇦🇺🤙
Thank you. It's a community effort. I just make the video.
Enjoyed witnessing your savage knowledge that influenced the manufacturer! I still hope I don’t ever have to build batteries, but if I do, you’ve made it so much easier!
Thanks a lot for your feedback and kind words, Paul.
Well done Andy 👍
On one hand it's annoying that the manufacturers don't employ people with the knowledge needed to do a proper job but on the other hand it's great that they at least listen to feedback 🤔 this company really got it's money worth from collaborating with you 😎
Really appreciate the work you put into the channel. You are the BMS God 😎
Thanks a lot for your feedback.
I complaint about the lack of balancing in this BMS for a while. I'm glad they finally tested it as well, found the problem and could fix it with a simple software update.
Really appreciate the work that you do Andy.
Thank you very much!
Great you moved Seplos to generate new firmware which is working! This will definitly be better for the users of such BMS. ❤ keep up the good work!
Took me only like 6 months complaining to them... and they kept confirming it is working as designed. The thermal camera view clearly proved them wrong.
@@OffGridGarageAustraliathanks for your perseverance!
Hi Andy. I have a Seplos Mason kit and the Seplos BMS 3.0 on order and cant wait to try it out. Keep the great Seplos content coming!
Great, it will work just fine. Don't forget to upgrade it to 0.5 😂
It is always worth hanging out for that last bit at the end. Thanks.
Hahaha, it's always worth it! 😊
Andy my friend., I'm half way through this video and without a doubt this is the best video you have ever made. I love the FLIR breakdown.
This is how it's done folks. Test things, give feedback, and get results. Passive balancing works with the right settings.
I wonder if Seplos gets the same service from thier own customers in China! Great work Andy and thansk again for all your efforts to aid our community of DIYers!
Thanks.
I would not expect they get much feedback from their Chinese customers. Not sure how they deal with critics from within their own country.
Yea I have No Faith in Seplos, they couldn't have gotten this far Without You doing all the legwork for them.
Yeah, unbelievable, they haven't got someone doing all this testing in-house.
Thank you! Andy the BMS warrior!
💪💪
Thanks Andy, Great result 🐸🐸🐸🐸
Thanks, Wayne.
The best Solar UA-cam channel, all the others just use and show BMS and batteries, at most they show one or two BMS functions, but only Andy from Off-Grid Garage seriously tests and compares BMS in depth with all their functions and at their limits.
Oh, thank you very much for your kind words. I'm just interested in all this stuff and am happy to share it here on the channel.
Nice Andy, i hope that seplos deliver also software to Version 2 of BMS also. Add a parameter to set SOC to 100%.
That would be great. Not sure if they still develop any new software for the V2 of their BMS.
This was a great 👍 episode
Thanks, Clarence.
good work and thanks, the future will tell the result and if you need the Heltec🙃
I think, I will still need it. Charging to 57V may not be the way to go for me...
What about the Seplos 7ss 24v 150A BMS ! & thanks 🙏 for you testing our batteries 🔋 to 3.43v for the best performance thanks a lot for you’re work !
Well done for keeping us all updated on Seplos systems. I have a Seplos V2 running a bank of cells which uses passive balance. What a nightmare. Cells 1-5 have a higher voltage than Cells 6-15. Now I have an expensive problem with the cells. I was thinking of changing to Seplos V3 and they seem to also supply a separate board for active balance. I would have to get both V3 board and Active board and throw the V2.
Have you tried the active balance board, so I know if it worth pouring good money after bad in trying to get Seplos to work and not destroy any more cells?
Hi Andy,
Thank you for all the videos. I have learned so much from your channel. So much so, that I have recently purchased 16 280amp cells and Seplos V3 200amp BMS. I am currently putting everything together. The battery manufacturers recommend to charge to 3.55v and discharge to 2.8v. Would you have a list of parameters that would be suitable for the V3 of the Seplos BMS for these batteries. I see you have a list of parameters for the V2 and V1 of the BMS. Thanks.
I've been sticking with the V2 Seplos BMS for builds, looks like I might stick with them for another year!
There is no need to upgrade a BMS if it is working fine. The V2 is not a bad BMS, just the settings can be tricky to circumnavigate that it goes into a protection state all the time.
Andy, a new feature i can suggest is to adapt current charge / discharge limit with temperature mesured with four probe ! I could be a enable / disable function if customer wants, and will increase lifecycle of cells when weather is cold or hot.
Is temperature such an issue when charging lithium batteries?
I would assume, if the battery is hot while charging and we reduce the charging current, the battery won't cool down. There is too much mass which has heated up and just a lower current won't make a difference. This is what I have observed last summer in my garage
@@OffGridGarageAustraliait's more for limit charging at cold temperature, i think it can be an interresting feature. When you see in cell's datasheet at 5°C, limit charging to 0.05C, at 10°C, limit charging to 0.1C or at 15°C limit charging to 0.2C, it could defined automaticaly with customer coefficients or disable :)
@@LemoulteBatterieshmm, never heard that lithium cells need lower charging at colder temperatures. Where did you find this information?
Look at your Tesla model 3 ? Have you nevers seen the charge speed limited by cold ? ;) it's the same : Tesla take care about cells batteries because they adapt charging current according cells temperatures. 😊😊😊
Excellent work @OffGridGarageAustralia Andy! And results from a manufacturer willing to listen! Question for you. Is there any reason I couldn't / shouldn't use a T-tap for example into the BMS balance cable harness to plug in a NEEY or other Active balancer, hence to alleviate the need to have more wires routed to the battery direct, when after all we have this wonderful circuit board strip which has the sense wires neatly coming off it already. I want to avoid more loose wires in the area of the terminals. I'm also thinking a Y-cable to BMS consisting of 2 Female connectors on one end (BMS, and Balancer), going to one female connector (Long voltage Sense circuit board) within these various DIY case kits. Please weigh in!
Check the new DIY box V3 from EEL battery. Looks very nice on video and solves your dilemma. Unfortunately, they only provide Seplos BMS V2 (10E). I'm personally a bit worry, that Seplos will provide no new updates to V2 after they introduced new V3 version. And on the other hand, I don't think EEL is capable to develop own BMS firmware update.
Andy replied to the comments on the last video, so the next video will be coming soon :)
Andy,
Can you tell us the pinout of the cable between the victron cerbo gx CAN-BMS and CAN seplos thank you verry much. (Maybe picture if possible)
Good job with your channel.
Dear Andy, I am watching you for a very long time and I find all your topics interesting and instructive. I recently had safety concerns regarding solar panels. These are uninterruptible source of power when the sun is shining, and there is virtually no protection in case of an event such as a short involving a single string of solar panels. In my place, we often use large strings of solar panels, with a voltage of up to 400 Volt. In case of a damaged isolation, this can actually kill people or cause a fire. Typically, there should be two damages side to side, but in case of a mechanical event, this is very likely to occur. I was hoping for some mechanism based on the differential. One could measure the current two points of the electrical loop and cut the loop at these two points if the two measure are different, meaning that there is a short circuit. I never saw this anywhere and though it might be a relevant topic for you. Sorry if you already covered it. Cheers
Thank you for being with me for so long!
I don't see a concern here with the solar panels. If you have a problem with one string in a panel, this would be only a few volts and not the full string voltage as you said. And killing people... no unauthorised person should touch such systems in the first place, if in fault or not. We also have requirements for certain safety mechanisms like Earth Fault Alarms which would tell you if something is not right.
Solar panels can take quite a bit of current in reverse before they start getting that hot and burning. That's what the maximum fuse current states on the label at the back of each panel. This is the safe current which can go in reverse through a panel. And I would assume, this is a very safe number and the critical current (before it starts burning) is likely to be 5 times higher or even more.
Thanks for another great video Andy! I have to ask, is the SOH concerning anyone?
Not at all. It's just the BMS algorithm which calculates and shows it.
I got the V3 BMS deliverd with FW 0.1 on it.
And I told them right from the beginning, that the balancing does not work...and they let me try it with every iteration again and asked, if it now works...they outsource their work to us Andy...in order to save cost.
I am not a fan of their business practice and it took me a lot of time to always set up new tests....but at least they fixed it now.
I hope, that will listen to your recommendations with the Float mode (CVL2).
Also you can recommend them to not send CCL= 0A to the Inverter, once the SOC is reset to 100%.
Than it takes way more time, until it eventually balances.
Also they could increase the balancing time for each resistor a bit and allow it to get a bit warmer...and even add a heatsink to the 20Ohm resistors.
Thank you for all the effort and your spreadsheet!
Thanks Raphael. Yes, we are doing a lot of testing and quality control work for them, no doubt.
I don't know the reason why they develop a new BMS without active balancer. If the new JK BMS works as per the specifications, there is no need to buy any other BMS ever.
Absolutly agree...if the JK Inveter BMS works as intended, we don't need any other BMS anymore. Let's hope, they don't mess up Inverter communication 🤞@@OffGridGarageAustralia
Yeah, I'm waiting for my V3, but I believe the cooling might do a lot of magic with minimum cost...I'm even thinking of adding cooler at current situation after delivery....
Probably the cooler won't help because they do no active temperature monitoring on the resistors. So no matter how cool they are, you won't get more balancing speed. Tey are switched on only for short and than there is quite a waiting period until they are back on.@@peterpanacik2708
Hi Andy. Thank you for your great reviews. Is it not possible to activate an active balancer with the dry contacts of the Cerbo?
Yes, it is. I just hate the extra cable going to the battery and if I move it around I have a problem. I like the more integrated solution where only pos and neg are connected to the battery.
Andi as always a great video.👍 It's just a shame that people like you are needed for the manufacturers to do their job😅
Thanks Richard. Yeah, remember the NEEY... it took them 4 editions to get it right.
Yes, exactly. But now this balancer is perfect, thanks also to you 👍
Can you please share the best parameters for the V3 version I will install mine soon. Thank you for all you do for the community. ❤
The best parameters? How am I supposed to do that without knowing everyones individual setup, design and needs???
Please make a video tutorial for bms seplot to receive the software. Thank you
Yes, nearly all commercial PCBs are coated. Dunno about measuring mA level amperages accurately with a DC clip-on amp-meter.
I tested the clamp meter with a 10mA power supply and it worked well and accurate. However, it depends on the environment and other magnetic fields at the location of measuring. This can mess things up and make the results unusable.
Here, it was more to show the balancer turns on and off during action.
That was really neat watching those resistors in real time through the FLIR camera! I've got to get one of those...
I haven't yet seen the video where the SPAT name is created, but I think I finally figured it out? Solar Panel Angle Tester?
I'm pondering a question. If I've been paying attention in class (and I'm still working my way through watching ALL of your videos), charging a cell to 3.45 volts results in a state of charge in the high 90's%. My question is, if one were to always only charge the battery until the highest cell reaches 3.45 volts, then drop back down to float voltage, and never actually balance at all, would enough cell deviation ever develop to be significant?
I should add, this assumes all cells were top balanced before putting the battery in to service.
I think it is actually Alignment Tester, but same
@@evil17SPATs do require regular calibration.
If you only charge the first cell to 3.45V and immediately drop back to a lower voltage, it will somehow hide the imbalance in your pack. It would mean, that all other cells are on a lower voltage and therefor SOC is also lower than in the first cell hitting 3.45V. So, the imbalance would aggravate over time without being rectified or even visible.
Imbalance occurs all the time while charging due to difference in internal resistance and other factors (variation in chemistry, temperature).
@@OffGridGarageAustralia Thank you, Andy. I'm still on the steep part of the learning curve with this stuff. ;)
Hi Andy, you mention that we can set a CVL on this now? Have I missed your video in how to do this? Could you refer me to where you discuss this? Thanks!
The Seplos BMS V3 has its own settings for CVL, CL and DCL right at the bottom of aaaal the settings.
Here in the video: ua-cam.com/video/AJLwxqHsHjk/v-deo.html at the around 18min mark
I think this may be the problem that I have asked on the previous videos. The issue with not able to go above 55.20V. One cell will go to 3.65 but some other cells are not even touching 3.4. Deviation was around 200 to 240mv. It comes with 200mA Passive balancer. You have suggested to do a top balance and finally I have solved that with the help of NEEY balancer and disconnected it . After checking for few days now the difference is under 20mv when pack goes above 56.8V . Also charged the pack to 58(3.63V/cell). I think now it missing the track of SOC, that I may need to manually set to 100% since now its not hitting the cell overvolt at 55.20V or even 56.8V. May be in previous case it set to 100% at 55.2V since its hitting Cell overvolt and now its not hitting. Thanks for the help Andy.
Yes, great you've got it going.
Once top balanced, the passive balancer may be enough to keep the battery under control. It depends how you charge and if there is enough time for the balancer to do its job.
Thanks @@OffGridGarageAustralia . I think we can set 98% or 99% SOC when the pack reaches 55.20V. Right ? since there will be roughly around 1% above that
You kept the voltage with a small current . How do you think it would work in a regular solar charge where the current is much more ? I am sure once it is balanced then the current would drop naturually towards the top voltage. But maybe people would need to hook up a nice regulated power supply like you have shown to get the batteries to a much better low cell deviation if they are way off in the first place ? Nice that you helped Seplos figure that problem out and yes weird they didn't test it first .
If you set the voltage to say 3.55V per cell and also start balancing at this voltage, it should work once the charge current has dropped off. Balancing can only work if the charge current is smaller than the balance current. Otherwise you still add current and charge to the cells.
But, you're right. This laboratory testing as there is no solar and load connected. In a normal scenario, this will not work as good as shown in the video. There is always some power going in and out of the battery when in use, even if it is fully absorbed.
I guess the solution here would be to use a more powerful balancer.
The Master Tech !
Heya, well that is nice only 8mV that's nice and that with a pasive balance I'm chocked well done olso for seplos but still like to see how it will do in a real live senario so have to wait for that lol.
Hi Andy!
And thank you again for this video and this new test, which seems almost conclusive, unfortunately the balancing time is certainly too long, because this type of BMS has too low balancing.
By changing the start of the balancing, maybe it will be a little better?
But nothing beats a good active balancer of 4 or 5 A minimum.
Their update is still effective, that's good.
With a battery that has very good cells it should work well in the end.
Thank you.
The balance start time will have no effect on the result. In fact, it can make it worse if you start too early. I'll make a video soon about this, it's frequently asked.
I agree, an active balancer would be a far better solution than making this 150mA balancer work through an update. These passive balancer still need a far higher voltage to be somehow effective.
@@OffGridGarageAustralia Would love to see a very detailed comprehensive video of a you going over a conglomeration of BMS Settings and what to set each function to, and why, and examples of how it might need to be changed a little for this or that purpose. Maybe you could use 3 core examples (Ex 1: 16s which you want to only keep charged at 3.45v as the top, Ex. 2: 16s 3.55v as the top, Ex. 3 16s with separate Active balancer maybe? or maybe 3.65v? IDK.)
Ty, i undestand why tepreture upside down, Australia.. 😁
and the left is the right.
What kind of Active Balancer’s do you have on you’re battery bank ? “ I thought I herd you say you had 5 separate balances on this battery bank !
Hello, I think, that will be enought if you share parameters used during BMS test.
Yes, one has to wonder why these manufacturers ship batteries with BMS's which do not balance the cells properly. It isn't just Seplos. Probably 80% of the sealed "car battery" style LiFePO4 batteries also mess up the balancing parameters. And without communication, there is no fix for those.
I suspect it is because most of these brands / companies are just shell companies. They don't produce their own hardware, or even produce the battery packs. They don't have anyone with expertise on what the settings should be. Nothing. They just slap the stuff together and call it a day. And when they get into trouble, they just disappear and then appear again a month or two later with a different brand name in-hand.
Seplos, though, seems to have gotten over that "fly by night" hump, so it is doubly concerning that they could even ship these things with non-working balancers. At least they fixed it.
Another problem is that even with working balancers, for many of these brands (particularly the ones that do not have BMS communication available) the balance parameters are hardly ever published so you just can't tell if your charging target is sufficient to trigger balancing operations in the battery.
And how many customers actually care? They buy the battery and use it as it comes, never go into the settings. In case of the Polo batteries, they would constantly disconnect (with OVP) and appear to be faulty.
All easily avoidable with the correct settings and QC before shipping.
dear andy I continue to have Soc consistency problems many times I find Soc 85 and battery voltage at 48V, I keep saying that the Soc should be recalculated when the battery reaches the discharge alarm and goes into standby. at that time the Soc should be rewritten. what do you think?
I have a v3 150a bms but it looks different to V10 or v11. Mine has 4 pairs of shunts?
Has someone ever updated the firmware 2.x to 3.0? Does it work with BMS Studio?
Danke! Sollte hoffentlich selbst Down Under für ein Bierchen reichen. Lass es dir schmecken.
Thanks a lot, Sven. Cheers🍺
Bonjour,
comment avez-vous branchée les 3 packs batteries entre elles
Je possède 2 packs de 16S 48v
Comment les branchée le négatif avec le négatif et le positif avec le positif et apres
Positif de la premier et le négatif de la deuxième ext ....merci
Quel est le réglage idéal pour vous pour le Neey
Need help - have exactly the problem Andy describes here, but I´m unable to start DevBMSStudio and also UpdateBMS. Can run Orient Power Tool with setting 9600,N,8,1 as set in the BMS. When I try to start UpdateBMS V2.1: can select the ehex file, but when I want to start the transfer to the BMS, I get an error message. Unfortunately chinese, not even possible to translate by Google are whatever, since I cannot mark the text. Hilfe ich verzweifel noch...
Something to note, there is a 'dry' contact on the V3 BMS PCB - not investigated it yet, but it's there...
Hello. I am using BMS Seplos 3.0 v10 software version 0.7. it has a voltage deviation of 1 volt compared to reality. For example, the battery pack has a voltage of 53V but the BMS displays 54V. Please help me adjust the voltage settings for bms. Thanks
Andy ,,, Even Tesla uses the " Customer" as a Quality control department .. after the fact ... being an Electronics tech for a number of years I have often heard the phrase " We can do further testing in the field". followed by a "Ship it""....that's what version control is used for... As for Seplos you should be on the payroll. I do enjoy your vid ... so have a S.P.A.T and relax.;
Thanks, John. Yeah, I mean if they would provide frequent updates, it wouldn't be such an issue. But they should test themselves and come up with these updates. Cannot believe it took them them 5 version to realise the balancer is not doing anything.
Hi Andy, I have completely lost the overview about the BMS-issues or recommended solutions. Can I summarize to this: Any cheap BMS which is able to observe the voltages of the single cells and interrupts charging or discharging of the whole battery when one of the single voltages exeeds the programmable voltage limits and do some equalization with more or less current, combined with a 5A active balancer, together with a additional voltage limit controller, which let the active balancer only run above 3.4V, will do the job?
Perfect summary!
Hello. version 48200? for what bms sir?
What about 10E BMS FW update? I have same issues there. Fixed by adding NEEY active balanser.
The 10E balances OK with the same balancer (20 Ohm resistor).
The dates on the files suggests they knew the problem and had it fix before you started your test ?
I had an in-depth discussion with them and provided data and screenshots. They acknowledged the problem. 5 days later they sent me the new FW, so that turnover is actually great.
Hello
I’ve have problems with Seplos BMS.
This is my first running of this bms. Its was work about 24 hourus and finally when step to low voltage (about 48V) stop discharging.
Next suddenly its go to state Shutdown. I can't switch on to charge or discharge mode.
If i try use button reset on the board to turn on, that led light and display bright few secound and next themself turn of.
If i disconnectd from Sofar, and connected supply wire from lab charger (55V) to socet P+ and P- on the PCB board, that BMS running and i see in PC via Battery Monitor V2.1.12 but mode state is Shutdown.
BMS is connected to SOFAR HYD3600-ES
Hi, it's a problem that I've also encountered and I've already reported it to the engineers. The only way to restart it is to enter the BMS with the software, modify parameter 91 by setting a higher Soc and you'll see that the SOFAR inverter will see the battery again. To avoid having these problems you have to raise the discharge depth to 49V
Dear Andy. Please test JK inverter BMS.
JK-PB2A16S20P-LCD
It's not out yet.
hi do you known password Bluetooth app ? Thanks !
I wonder if they had the same issue with the older types.
They always seemed the work. The passive balancer is just very weak and it takes a looooong time when balancing these large capacity cells.
Interesting fact, the balancer did not change in all their BMS. They all use the same 20 Ohm resistors. So, here with the V3 BMS it was just a software issue as we saw.
Burn trabajo andy aprendo mucho contigo y agradezco tus conocimientos pero estoy viendo el punto flaco de el sistema ee baterias lifepo4, y mi conclusión es que los bms que llevan la mayoria de fabricantes no estan bien desarrollados siento decir esto pero no cambiare de plomo mi sistema de baterias a litio hasta que la empresa victron no tenga un producto especifico para hacer o incluir el bms en un sistema casero de baterias y tambien tengo que decir que china tiene mucho recorrido en fabricación de litio pero esta muy muy verde en lo mas importante que es un buen bms
Whatever that means, thank you.
is this the seplos bms from your bms spreadsheet? do you add the new infos in the spreadsheet?
Yes, I have now added the info. It's the V3.0 of their BMS on the spreadsheet.
I was going to ask about the firmware in-house tests 😂
I hope they learn from that...
@@OffGridGarageAustralia It's incredibly bad QA.
I think they should just provide a relay switch to turn on an external active balancer (like the ones you bought) at a set voltage and let that do all the balancing rather than doing their own silly passive balancing.
So their BMS would everything apart from balancing.
Yep, that would be an easy and effective solution. Customer could use their own active balancer and activate it at a set voltage. Easy.
It works like this in the QSO battery. And it works well!
Hallo,
Slightly discordant topic.
I am unable to find BMS PACE in EU. If you can, would you be so kind as to provide a link to purchase them?
Thank you
Best regards and good work
You can only buy them in China, I believe. Unless they have them in their warehouse in the EU.
Maybe wait for the new JK-BMS which will come out soon.
Tak!
Thanks a lot, Henrik. I appreciate your support!
Andy how can i get into my pace bms i can't change the ovp its to high at 3.7 my bms has a password i might have to email the company but they probably will think im messing around with the setting and void my warranty
Enter the password 123456 at the bottom to enable writing the settings back to the BMS.
Did you watch the PACE BMS video? ua-cam.com/video/Wqvj4R--uNE/v-deo.html
It's indeed a bit weird why Chinese manufacturers lack updates.
'Our' dutch Victron is listening better😊 (although they still need to integrate the setup with the normal menu structure and get rid off the ridiculous old fasion web version of the Cerby (nice typo btw😂)
That is mad 57.2 volts. No clouds down here. 55.2 here.
Salve Andy, per comunicare con BMS Seplos 3.0 che converter USB RS485 utilizzi per comunicare con software pc studio. ?
Grazie se riesci a dare una risposta.
Devi usare il convertitore originale seplos con quello aftermarket non funziona
What happens with the BMS if you take advantage of cheaper night rate electric and switch to grid at 22.00 hrs until 07.00 next morning? Would this allow the BMS to balance the battery every night (with the correct settings) but also you would need a smaller KW battery and it would cycle less deep so allowing for many more cycles/ years in service.
Hard to connect to the grid in an off-grid installation 😁
Honestly, that cannot be the solution just to make a bad BMS design work. Also, impossible to keep the battery fully charged until you switch. Having a battery sitting at 100% SOC and then go back to the grid... just think about it 😉
Technically, yes, it would work, if the voltage in the battery can be kept constant (eg. variable power supply).
@@OffGridGarageAustralia I was thinking more for my situation than yours, I have 48V 1000Ah FLA battery and switch to grid every night at 22.00 - 08.00 hrs as the electric is half price and my battery is not big enough to go all night anyhow. Fully charged every day with an LFP battery is bad news ALL the manufacturers say for best cycle life to use 20-80% DOD with an occasional balance charge to 100% if the battery monitor goes out of sync. At 22.00 hrs when I switch to grid my battery is never sitting at 100% because the sun has gone by then, Summer time SOC is 80-90% and Winter 50-60%. LFP would be the same but I could use a smaller battery which means less initial cost, this is a big factor for most people as a storage battery is the largest single cost. I also believe whilst the battery is resting at night it is balancing itself...
Hi Andy, I have two Seplos Mason 280l coming next week, both are coming with the 2.0v BMS, I'm wondering if you would recommend upgrading to the 3.0?
Do you plan to connect them to an inverter or Venus OS?
The V2 works perfectly fine but the setup could be tricky.
I would not upgrade to the V3.0.
@@OffGridGarageAustralia They will be connected to a Solis 5kwh hybrid inverter 👍
What if they give you the option of choosing between v2.0 or v3.0 for the mason 280 kit. Which one would you choose?
@@joseo.cordero7286Go for the V3.0 of their BMS. It's much cleaner to program and operate. They will discontinue V2 at some stage
Hi Andy
Seplos bms ver 3.0 has a dry contact. See manual SEPLOS SMART BMS 3.0 16S100A page 5. Unfortunately they send me version without this dry contact and heat contact. And question is what is Drop out contact on bms. You can also buy their active bms, but only 2A but i am afraid that this active balancer is from rezistors not capacitors.
I haven't seen dry contacts on the V3.0 of their BMS. Heating is an option and you need to order that accordingly.
An active balancer cannot use resistors to function or it would not be an active balancer. Their active balancer is a separate device, not on the same PCB as the actual BMS.
@@OffGridGarageAustralia
Hi Andy. Try to search SEPLOS SMART BMS 3.0 16S100A .pdf but there is also 14S version SEPLOS SMART BMS 3.0 14S100A.pdf that dont contain dry contact. Only 16s has dry contact. If you dont find it i can send it to your mail.
@@tomkohout8456 There might be a difference between V10 and V11 with that?
I saw the parameters like “Stand by equalization” 10H, i changed it for 24H, and equalization goes faster. I think it became zero after 10h standby equalization…
So what are the chances of seplos rolling out this firmware upgrade to their older bms's Andy can you ask them? They talk to you!
I think the older BMS versions (V1 and V2) are fine and working. They use the same balancer hardware but this software bug was just in V3 of their BMS.
@@OffGridGarageAustralia Andy thank you as always. I believe I have V2 on a single battery but very interested in you upcoming JK bms tests👍👍👍
Just in the process of buying 4 seplos kits and cells direct from Seplos. Should I go for V3 now?. They are offering for extra $50 to get a 2A active balancer with it. Do you reccomend getting this? or should I get a NEEY?
I would go with V3 now that we have the new FW update. It's a bit cleaner to program than the older V2 version.
I haven't seen their balancer yet. I would probably try first and buy one later if necessary.
@@OffGridGarageAustraliacan you recommend a video of your to top balance them?
@@giollaliddy5817 I have never actual made a dedicated video about top balancing. It was always part of the whole battery built project. I'll add this on the list of future videos to make. Thank you.
If you have already built your battery and the cells are connected in series, the easiest way is to get an active balancer and connect it to your battery. Increase the voltage of the battery slowly to give the balancer time to balance all cells. Monitor the cell voltages through the BMS app. If one gets say over 3.6V, stop increasing the voltage and wait until this voltage comes down. Then keep increasing the voltage. Repeat this until all cells are at 3.6V and you're happy with the overall cell voltage difference. The BMS will show you these details.
If you haven't built your battery yet, connect all the cells in parallel and set the charger to 3.6V. Wait.... the charging time can be very very long here, so be very patient. You may not see an increase in voltage for days.
Charging 16x 280Ah cells in parallel with a 20A charger can take over a week.
Thanks for detailed answer. You have so many videos. . Do you have a video you can think of off hand that you do this with an active balancer?
if you must measure the tiny resistor...than you shoud tell seplos to shub it their...the equipment
Many questions for Seplos to answer.
1) Well that explains a lot, FLIR says "there's your problem". The spot temperatures still suggests these resistors aren't getting 100% of expected current 100% of time, avg current still seems very low. Dremel coating on resistor or try removing 1 for further testing with ext leads to test various resistances, current & voltage, temperature, waveform & duty cycles.
2) They were working on the balancing problem before Andy tested. This upadate dated 24 Sep 2023. Users complained with ver 0.1 but took another 4 version updates to better fix this. Where's the inhouse testing to deliver what they promise?
3) Maybe the programmer assumed a pulse on & pulse off but the hardware design needed constant signal to remain high to keep balancing. SNAFU.
4) What's with the multiple versions? BMS v3.0, HW v10 or v11, firmware update file says v1.15a, connected management software says BMS using v0.5
= great confusion & more potential errors.
You’re dealing with a Chinese component manufacturer, not Tesla. With these types of products only screw with the firmware if it’s not working for you, then once it is leave it alone. Often with these sort of products newer does not mean better. The balancer will regularly stop, sample, and continue, they probably don’t want the rise temperature above 20*C a they’ve used cheap resistor and need to look after them.
Considering it working fine with this latest update, I’d argue it’s working as v2 does - which is as expected - I’m not sure what more you expect from them?
@@edc1569 Not every design problem can be fixed/mitigated by using software. What other problems have been knowingly compromised or ignorantly overlooked?
I can understand both arguments. On one hand, it's a shame they need so much external input to finally look into it on the other, it's great they fixed it with just a software update.
I contacted them on the 19. and they proved me with the new FW on the 24., so that's not bad. But again, what about the internal QC and the past 4 versions?
Hey betatester Andy - an interesting idea with the float Voltage mode.
But here is another one: Don´t switch to float after a fixed time period? We want the high charge voltage just to balance the cells....so it could go to float voltage just after the cells are fully top balanced right?
What doyou think about that?
Yes, correct, that should be the trigger not a set time. I have read some comments that some have used Home Assistant to achieve that.
With these software updates, possibilities are limitless. We just need them to come on board. Imagine, JK would say "Hey community, what features and functions do you want? We will make the software for you.' They would smash all other BMS manufacturers against the wall.
It is called a conformal coating.
Ah right, thanks. I will not remember that😉
Awesome Andy!
Will the v2 BMS behave the same?
I recently got such a Seplos BMS with Bluetooth option. The MOSFETs are connected to positive side.
I will be using with Growatt SPF 5000 ES and will share my experience after a couple cycle uses.
Thanks. The V1 and V2 have the same balance function but didn't have the software bug. So they should work as good as the passive balancer can work.
👍👍👍
@Off-Grid Garage
Hey Andy, im still fighting with my Seplos V3 200A. 100% Soc reset with 30min 16xCOVA didnt work for me. Only OVP is setting 100% but did't start the Intermittent charge waiting timer :( Tested the settings and firmware from your spreadsheet and also the new v0.6. Maybe you know a solution for what im doing wrong here :)
I'm testing the setup here as well for the last 3 days. Seplos V3 is HORRIBLE. They never reset to 100% unless you use a power supply and no load connected. Tested 0.5 and 0.6, nothing when connected to solar and some load. Tried for hours on this voltage, not working. I updated the spreadsheet already.
Also, when charging they sit on 98.5% for 4h until the voltage finally rises to 55.2V. SOC calculation is way off!
So far only OVP will set them to 100%SOC.
@@OffGridGarageAustralia Exactly the same result that i get with 0.5 and 0.6. I test since weeks already on a Deye Hybrid setup. So in that case i guess i have to accept that this BMS is crap currently on that FW... Maybe you can bother your contacts at seplos to let them know ;) So, i will give up for now and change to the voltage based charging logic on the Deye Hybrid. This is working great so far. Would be very nice when you keep the community up to date if something new comes up to that bms :) Thank you Andy!
@@auamanu the fw for the BMS V3.0 is not great. It has some nice features but others are just too bad and you cannot really control when shows 100% or 0% without hitting UVP or OVP.
Seplos is not really interested changing that, I guess. They think it is working as designed and going into OVP and UVP is not a bad thing.🤷♂
@@OffGridGarageAustralia Seplos released a new firmware last week for the V3.
Description: "update to fix algorithm of SOC, to make sure it more precise."
I will install and test it, maybe there is some improvement :)
@@auamanuYes, I tried to download the new FW and it won't let me unzip it, saying it contains harmful software. No chance to extract it on any of my devices. Great!
I think it only fixes some SOC calculations during charging/discharging. It is awful in V0.5 and 0.6!
🎉🎉🎉
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Having these battteries leaving the factory balanced makes it hard to spot such a bug, which may have been introduced in a later firmware by accident.
It happens to the best of companies and the best programmers. No shame in admitting a mistake and fixing it.
Yes, correct. But still, the balancing is a core function of the BMS so it should have been tested with each FW update.
I'm just glad it was a software glitch and not the same saga as with the NEEY where it took them 4 hardware versions to get it right.
@@OffGridGarageAustralia I agree. Rigorous testing of new firmware versions should be standard for all products. Unfortunately sometimes "it works" is about as detailed as it gets.
But fortunately you were there to educate them. I suspect testing the balancing performance won't be forgotten anytime soon 😂
hello the bms3.0 is ok buscan type A or type b please thank you !
Not sure what that means...
hello andy which victron cable is needed for bms 3.0 the type a or b cable? thank you because both work but I have loss of information from the seplos 3.0 bms which means that the inverter takes from the network with each loss of information!
@@patrickruiz6764 It's the Type A cable you need for the BMS and Victron. The labels on the cable show you how to connect it.
hi andy seplos told me the B??
@@OffGridGarageAustralia
APPARENTLY THE 2 WORK BUT THE EARTH CONNECTION IS NOT THE SAME!
@@OffGridGarageAustralia
Thanks for the vid, Andy.
But I have to ask. Why does a balancer "burn off" excess battery capacity rather than extract that energy from the high cell and charge the lower cell?
That would be an active balancer. Passive balancer costs less and can be effective if the cells are reasonably well matched. An active balancer working all the time (which many do) has the power to mess up the balance at lower states of charge and may actually waste a lot of energy doing unnecessary balancing. Best solution seems to be to use a passive balancer most of the time but to plug in an active balancer when required.
Jens ( Meine Energiewende ) and Jörg ( Meintechblogde ) from Germany asking you to invite for a livestream session.Maybe you have time i´m there too.
I'm in contact with Jens. I would love to, but the time difference is 8h at the moment. Maybe we find a suitable time hen your turn your clock back again soon...
✌
We need high Voltage BMS for sets from 200V to 600V.
Do U have ideas?
Excusme password for login bms 3.0?
Hello
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💙👊😎
🐸🐸🐸🐸
Yes, 4 frogs now!
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No, 🐸🐸🐸🐸
12:35 2.5hrs and balanced 40mv? all that for 40mv and when being charged at ~100ma?
not impressed
I mean, batteries would get full at around 2-3pm and by that time there wont be another 2hrs of enough sun to keep it full charge.
Now that the initial imbalance has been corrected the subsequent days won't need as much balancing time as there won't be that much of a cell difference.
These batteries have never seen a proper top balancing, so a passive balancer will take a long time to rectify the issue.
best BMS ever?? I don't think it makes sense to balance a bms for days on end... if during the charging process the cells are not balanced, some cells will overcharge or remain undercharged.
You cannot balance the cells during charging. It is just not effective.
Once the pack is fully top balanced, the balancer should have no problem to keep the pack that way. With these passive balancers, you still need to charge to 3.55V+ to make them work in a reasonable time.
I just tested it here and let it run for an extended period of time to test the balancer. That's not something someone would usually do.
@@OffGridGarageAustralia with these china BMSs it is of course not effective, reasonable BMSs have therefore also balancers with >1A, the balancing during charging works wonderfully. My EMUS BMS for example balances with 2A and reduces the charge current when the balancing threshold is reached. Then it balances for another 10 minutes and that's it. Everything else is nonsense.
People, do not buy this Chinese garbage!