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JBD 200a BMS Issue

GaryVolt

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Joined
Jan 17, 2021
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Can Some one tell me why my JBD 7s - 20s 200amp BMS. Is oscillating "opening and closing" the main contactor when I charge it??
 
Can Some one tell me why my JBD 7s - 20s 200amp BMS. Is oscillating "opening and closing" the main contactor when I charge it??
Could it be opening the contactor on cell over-voltage then the high cell settles and the contactor closes?
 
The only way I can charger is to bypass the contactor. All the cells are pretty even they are with in .02 of each other. I don't see any over temp, over current issues.
 
Last edited:
Here's a screenshot
 

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What kind of cell type are happy at that voltage?

Is the BMS configured for that type of cells?

Post up screen shot of the parameters of the BMS.
 
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