drbytes
New Member
- Joined
- Oct 21, 2021
- Messages
- 113
Hi.
I have 304 and 280ah batt bank, wired in parallel, both have a JBD BMS, the one with the relay : Jaibaida AP20S003S 7~20S.
I'm having an issue with the 280ah; it'll trigger an over-voltage disconnect (one cell will peak to 3.65) and the relay will disconnect the battery and because the 304 is supplying power to the loads the 280's relay will not re-engage as long as the 304 is supplying power. Only when the 304 is completely drained and hits it's low voltage disconnect will the relay on the 280ah re-engage at which point it dumps 100's of amps into the 304 while also supplying power to the load.
I saw this vid, the guy there has a similar re-enage problem albeit on the under-voltage disconnect :
Anybody here that has tackled this problem?
If this is the way it is I'll have to get ridd of this bms, it unnecessarily stresses both batteries.
I have 304 and 280ah batt bank, wired in parallel, both have a JBD BMS, the one with the relay : Jaibaida AP20S003S 7~20S.
I'm having an issue with the 280ah; it'll trigger an over-voltage disconnect (one cell will peak to 3.65) and the relay will disconnect the battery and because the 304 is supplying power to the loads the 280's relay will not re-engage as long as the 304 is supplying power. Only when the 304 is completely drained and hits it's low voltage disconnect will the relay on the 280ah re-engage at which point it dumps 100's of amps into the 304 while also supplying power to the load.
I saw this vid, the guy there has a similar re-enage problem albeit on the under-voltage disconnect :
If this is the way it is I'll have to get ridd of this bms, it unnecessarily stresses both batteries.