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    First Top Balance- One Bad Cell?

    I bought the Matrix 5000 used several years ago. My particular unit is wired for 240v single phase ac input. I had it in my garage attached to a 48v bank of FLA batteries to use during power outages. It can be powered on manually without any ac input voltage. I charged the 48 volt battery...
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    First Top Balance- One Bad Cell?

    I just ordered an Overkill 16 cell BMS with the 24" wires. I like the fact that it'll handle 100 amps so that adds a margin of safety for my system. I 'll be using the 48v bank to power a 240v submersible well pump with a Matrix 5000w 240v UPS inverter. I've also thought about bypassing the...
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    First Top Balance- One Bad Cell?

    Thanks WindWizard, I'll probably buy one of the Overkill Solar BMS units. Being able to monitor each cell and change charging parameters remotely with a phone is a great feature!
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    First Top Balance- One Bad Cell?

    For some reason the questionable cell charged up to 3.65v! Hallelujah! Perhaps it just needed some time away from the rest of the cells. Now I can connect all 16 cells in parallel and perform a final top balance. Next on the agenda is to shop for a BMS to use in conjunction with my FLEXmax...
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    First Top Balance- One Bad Cell?

    My power supply usually only charges around 5 amps when set at 3.65 volts so I don't have to worry about exceeding 280 amps. When touching the multimeter to the alligator clips of the charging wires they measure around .02v higher than the battery terminals. The charging wires don't feel hot...
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    First Top Balance- One Bad Cell?

    Thanks for the insight regarding the charging curve. I noticed that once a cell exceeds 3.40v it will finish charging much more rapidly. The cell in question was on the power supply all day and didn't even gain .01v of charge. I might try it again for a few hours. I just don't want to risk...
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    First Top Balance- One Bad Cell?

    Thanks, I contacted the seller today but I don't have much confidence that they will offer a solution since they don't sell the 280Ah cells anymore. I'l probably buy one from a US seller. I don't want to wait 6 weeks to get one from China.
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    First Top Balance- One Bad Cell?

    Greetings- I purchased 16 280Ah LiFePO4 batteries from a vendor on AliExpress last March and a week ago started preparing them for a 48v solar system. The initial voltage of the batteries measured 3.16v for each cell. After watching Will Prowse's YouTube video on how to top balance new...
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