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  1. R

    Troubleshooting New Cell Break-in and LVC possible damage?

    And I have one more technical question about my BMS that came pre-wired from china: It is a typical one, with -B, CH, and P The battery negative is soldered to the B, The out negative that goes to the controller is wired to CH. Between the controller and negative is the charging plug. P does...
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    Troubleshooting New Cell Break-in and LVC possible damage?

    Thanks for the tips. My charger works well with single cells it seems and I successfully got it up to 3.52 V yesterday. Today I did a ride on it for about 10 ks and checked voltage. All cells were even at 3.4 Volts, but the new one was still less at 3.35. But I just put them all on the charger...
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    Troubleshooting New Cell Break-in and LVC possible damage?

    Last update: I ended up charging the new cell individually with the pack charger to 3.6 volts, then shut it off. It took at least an hour. Now all the cells read 3.6 as I charged the other ones up too. Now I hope that they will stay balanced and the new cell stay in balance with the bms. And...
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    Troubleshooting New Cell Break-in and LVC possible damage?

    I guess my last question adding to the reply above, would be whether it is fine to charge the new cell up to 3.6 volts with my 60V 5amp charger (it will be at full power all the way) and then shut if off or would this be too high charge rate at the top and hurt the cell. (I would have to sit and...
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    Troubleshooting New Cell Break-in and LVC possible damage?

    Ok, Update. The charger finished charging the pack. I measured the cells individually. The front 3 nearest the black wire on the BMS were 3.66Volts. The New cell right next to them was 3.4 V, and all the other cells the other side of it were 3.45 V with no variation. I hope they will balance...
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    Troubleshooting New Cell Break-in and LVC possible damage?

    I recently replaced one cell in my LifePo4 20 amp hour pack as one cell had died after about 2 years. All the other cells maintain charge and balance at 3.4 vols storage or 3.6 volts straight off charger. I have used the pack about 600 charge cycles I would estimate. I placed the new cell in the...
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    LifePo4 Issues Help

    I hope someone has some input on this: I have a 20amp hour Lifepo4 that, when bought 2 years ago, used to cut off early in a ride. (16 cells, 48v pack) I bought a voltage meter, and tested the cells, and found 1 runt cell, that would always discharge to 2.7v, while the rest were around 3.2...
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