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    JBD bms SP24S004 vs AP21S001

    Hello! I have a small home storage and try to choose a new BMS for it. My previous BMS was JK, and it does not work good. So now I want to try another vendor - JBD. My setup is 24v pack of 8 EVE 280Ah LiFePo4 batteries. Hybrid inverter is 3200W rated and has max 60A charge current and near 130A...
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    JK 4S BMS brand new with errors

    The continuation of the story with "CPU AUX Anomaly" without happy ending. I replaced all three chips with new STI3470. BMS "works" - it shows correct data, I can change settings, etc. But while charging it continues repeatedly reboots (maybe not so frequently as before), but with another error...
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    JK 4S BMS brand new with errors

    I've found some STI3470 (SY8120) microchip. As I understand it is some kind of similar chip.
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    JK 4S BMS brand new with errors

    Thank you! It will take some time to do it. I'll post the results here as soon as possible.
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    JK 4S BMS brand new with errors

    > Can you replace SMD components on a PCB? Theoretically or I'll find someone who can. Also it seems that STI3470 are available in my location. > Do you hear any buzzing while charging in the BMS or even the power supply/charge controller? Maybe there some bz-bz in standby mode. But very-very...
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    JK 4S BMS brand new with errors

    Have the same issue with JK-B1A8S20P. It works normal on boot and discharging, but during charging repeatedly shows Protection (CPU AUX Anomaly). All temp sensors shows zero, charging amps drops to zero too. After some time - second or so - error message disappears, all temp sensors show some...
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