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Battleborn Batteries.

 
Is battleborn batteries good and do they hold up well enough for a offgrid system
not sure how good it is, but some of the best China made batt which even Tesla using, and the price is 1/3 - 1/4 of that BattleBorn
so why pay 4 times more for, maybe less quality/warranty ? and only 12v ?
do your homework to find out yourself
 
You want the battery voltage to be the same as the inverter voltage- don’t put batteries in series..
Yes it can be done but there will be more maintenance in thdd we future as you break it apart and re-balance- so only use BattleBorn on 12v systems.

Also, having the ability to check the bms with software- Bluetooth-cable, etc. may be super valuable at some point. Your battery cells can become imbalanced. By occasionally checking the software you will know if this is happening. Also, as you hold it at a “higher” voltage for a “longer” period - you will know when it is back in balance - and not just guessing.

Unfortunately BattleBorn does not have a Bluetooth feature or another way to see cell voltages - so I will NOT recommend them.
 
My first 20kwh where SOK $8000. Nice batteries, have had them for a couple of years now. Then I got some off brand in metal box batts for about $4000, also 20kwh. They have been good all summer. I was just looking at some 12v 100a batts on ScAmazon for about $150 each and was thinking about building another 20kwh battery for about $2400. I would build them 4P 2S with a Victron balancer.

$2400 for 20kwh.....not to bad of a deal, lithium prices are low right now.
 
My first 20kwh where SOK $8000. Nice batteries, have had them for a couple of years now. Then I got some off brand in metal box batts for about $4000, also 20kwh. They have been good all summer. I was just looking at some 12v 100a batts on ScAmazon for about $150 each and was thinking about building another 20kwh battery for about $2400. I would build them 4P 2S with a Victron balancer.

$2400 for 20kwh.....not to bad of a deal, lithium prices are low right now.
If you are in parallel, 12V batteries work great.
If you set them up in series for higher total voltage, 12V batteries drift over time, and you WILL have balance issues...
You will need bank balance devices to keep them from drifting voltage...
 
If you are in parallel, 12V batteries work great.
If you set them up in series for higher total voltage, 12V batteries drift over time, and you WILL have balance issues...
You will need bank balance devices to keep them from drifting voltage...
Yea, or maybe by the time I get to it the 24v or 48v batts will get down towards the same price range. It will just take a bit of time but it will happen.
 
Also keep in mind that some 12 volt batteries BMS cannot be connected in series as they cannot handle 48 volts across them.
 
Absolutely they do.

If you balance them with a couple of charge cycles in parallel to make them a "matched set", they will work just fine for a long time wired in series.

ALL batteries need to be occasionally re-balance, but I have been surprised just how well they stay matched.

Not saying that you should use them, but I have similar experience with Lifeline AGMs. Do a couple of balancing charge / discharge cycles and they work just fine in series.

You can always add something like this as well to any battery pack system.


I am not sure why there is so much hate on this forum for them, but they work very well.

No I am not a paid shill - I am just a happy customer and have built multiple 24 and 48 volt power systems for other people with zero issues.

Nearly all of the people that I see complaining are wiring them in ways that defy common sense for any battery.

Does a person really need to know where every single electron has gone in their battery pack in order to be happy, or does it make more sense to buy a quality setup with extra capacity and just sleep at night ? Most people don't even have any idea of the loads in their home in the first place, because the grid is well built and has extra capacity.

Do the same for your setup and you won't have any issues.
 
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but I have similar experience with Lifeline AGMs
AGM batteries don't have BMS's.
Totally different setup.
BMS controlled batteries in series WILL drift apart. And require regular balancing.
The best part about new battery technology is the lack of need for regular maintenance.
Putting BMS controlled batteries in series, takes away their biggest benefit.
 
AGM batteries don't have BMS's.
Totally different setup.
BMS controlled batteries in series WILL drift apart. And require regular balancing.
The best part about new battery technology is the lack of need for regular maintenance.
Putting BMS controlled batteries in series, takes away their biggest benefit.

I agree that they are different, but the point is that I have build quite a few systems from both types, and it works just fine.

Is it better to build from a 48 volt battery that is designed from the ground up for mobile applications ? Yes - but find one built from cylindrical cells from a North America or EU supplier.

Only a fool would put a server battery designed for stationary use into a mobile application.

I guess this one is stationary, so as long as it is away from the building it probably ok. The OP is also in Vegas, so the upper temperature limits are going to be a factor in the charging and discharging.
 

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