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I did! There is a micro mark in the black plastic and same in white. Reworded everything all it lights up. ? Now to charge them up and install.

So I bought 8 cells to make 2 x 272amp 12v batteries. Bought 2 x overkill bms. Before connecting all up, each cell was showing 2.99v. Hooked all up. Problems:- 1. the Bluetooth is not detecting for the overkill? Have app, says searching but never finds. 2. on each bank, 1 cell is nearly at...

That’s first thought. So I took all wires and bussbars off. And started from scratch following overkill diagram. Still no Bluetooth signal.

iOS. well, I don’t know how the cells have lost so much voltage when all they have been doing is sat on a bench for 2 weeks. Gone from 2.99 down to under 1 for some cells. Only the +ve terminal cell has stayed up at 2.89 on both banks. move deleted the Xiang whatever app and downloaded...

So my setup is 3.29v lifeboat cells X 4 to create 12v battery with 272amps. I have two of these to provide 544 amps. Each is controlled by an overkill solar bms. the bms read data screen prints below. I adjusted the total battery capacity to 272000, total cycle capacity to 80% of that. I’m...

I built 2 X 272amp 12v Lithium battery packs using the Lishen 4 X 3.2v cells and an Overkill BMS. All balanced, charged up and good. When I look at the BMS, at +/-3400mva charge per cell (13.7v for the pack) the amp capacity is only showing 85%. This cant be correct. To get 100% ie 272amp...

Yes ?

So, IF the 3.5v full charge value is correct?? then I would need to change the Float charge in my Victron Multiplus to 14.0v whereas its currently set at 13.7v? Then I read you shouldn't have a Float charge happening with a Lithium battery? So how does this correlate with Lishens specs of...

Have now disconnected Bluetooth cable and tested each end to end wire to ensure no break etc - ok. done same with bms to cell wires - all ok. I was thinking the low volta in pack was the cause, but that’s the whole point of the bms monitor, so I can see which cell is at what charge. Would t...

I've ordered Lishen 272a, 12v Lifepo battery cells for my RV battery bank build. Will have 2 X 272amp battery banks. Connecting these with 4/0 cable to a Victron 300w inverter. I was recommended an Overkill BMS (4s120aBMS+bluetooth)...

Yes. Shows -be on meter when I put the red probe on black terminal and black probe on white terminal.

My battery pack is 272amp, 4 cells, 12v. The cell spec is attached. I've connected with an Overkill Solar BMS - config also attached. I've top balanced the pack. Only way I can get to 100%, 272amp charge is at 14.4v ie 3.6v per cell. So, Im thinking (Im not confident as 100% new to this, so...

So I have 2x 280amp lifepo. Connected to a Victron muktiplus for my RV. Each cell is 3.65v max. I’ve set everything in BMS and Victron to to max cell/battery voltage. But, it will only charge to 13.6v. What am I doing wrong?

Ok. So amend on the Victron. What about the BMS, adjust that as well? And sync 100% at the 13.6v that it settles on float charge?

Yes. The Victron 3000w gives me the pass through and other functionality I need and its a 50amp RV.

So I have Ram 3500 and a 5th wheeler. 5er comes with a converter and 2 lead batteries. I purchased a redarc 1250d dual input system to let alternator charge batteries while on road and also has sole feed. just sent away for lithium battery cells and will build 2 x 280amp 12v batteries, dispose...

Lithium full charge issue. I have 2 X 280amp lithiums. 9 months old. Each cell is 3.65 max volt. So 14.6v for each pack. Connected to Victron Multi. The Victron is set to charge to 14.55v. Overkill BMS. Set to 3.65v max charge per Cell and 14.55 for pack. Delta set at .15 Problem. Each...