I had a 2P-16S that used one Daly bms that was giving me trouble so I elected to split bank in two and use two JK’s. Brought them down to 20% SOC and rearranged them. JK’s were flawless in setup and operation but my problems started when I got the cells above 3.4 volts. The balance went crazy and no way would two amps even got close to keep it down. Sure, could have snuck up the voltage really slow but I could tell it would be days for the balancer to do its thing. So power down, pull the balance connectors out of the bms, and pull all the 2/0 diagonal jumpers back off and lay down the buss bars. At least there’s one thing on my side about the battery orientation. Didn’t think I’d ever use my old Rube Goldberg contraption again, glad I did cannibalize it all of it. It doesn’t have the voltage regulator anymore so I got to watch it like hawk and throttle it back variac because after 3.5v things happen fast with 70amps. When it got to 3.65 volts and when the current drops under 10 amps, I call it good. My charge is limited by the #6 Ancor I have and didn’t feel like yanking bigger stuff out of the system. Testing around the busses it’s all within .002 at load. I never thought splitting up a well balanced 2P would be such a pain. The after results screenshot is worth it. My normal absorption voltage is 55.2v the voltage in the shot is 8 hours after top balancing. No, none on the balance leads are pinched and it’s not connected.
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