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Having trouble with JBD BMS (dis)charge overcurrents

sebbywebbi

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Joined
Dec 29, 2025
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Belgium
I recently installed a JBD BMS (40A) on a 10s9p pack (Samsung-32E cells) and I had some errors popping up of overvoltage and charge and discharge overcurrents. I managed to change the settings so the voltage warnings went away, but the discharge and charge overcurrent keeps giving errors (and a lot of them). I checked all wiring and everything is wired correctly. No charge or discharge port is even installed so there should be no current drawn or supplied. I'm really confused on what to do so any help or info is appreciated. I linked screenshots of the overkill solar app and settings.
 

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You have Total battery capacity and Total cycle capacity both set to 28000 mAh. Try setting the Total cycle capacity lower, like 27000 mAh and see if the charge /discharge errors go away.
 
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