OleMan2765
New Member
- Joined
- Oct 10, 2021
- Messages
- 62
Anyone have any thoughts on how to determine a Bad Battery? Or bad cells?
Three nights in a row, about two weeks ago, my system died. Two MPP's LV6548.
Three Husky Big Batteries (48v), Battery SOC was around 70%, and dropped to 10% SOC in less than an hour.
My only diagnostic is Solar Assistant, (Love it).
Batteries when Low Voltage at 44v, system cutoff. About 3AM each time. By the time I got to the system, the battery voltage was down to 14V. In the past because of not much sun, and cloudy days, they would be at 44V but the last three failures down to 14V.
I isolated one battery, and attached my battery charger, the batteries would climb from 14V to 46V in less than 5 minutes, unheard of.
Ran system on two batteries, and same failure happen next night. Put the battery back in the loop, and disconnected another battery.
Charging again from the 14V back to 46V happened quickly again.
Ran system next day, same failure. So that told me the third battery was the culprit. Isolated that one, and system ran all night.
Now, have had all three running the system, without failure for about ten days, so what's up.
Hence, my question, how do I find out a battery that has a BMS that only communicates internally. No way to see any info?
Anybody have any suggestions?
Thanks for any ideas.
Three nights in a row, about two weeks ago, my system died. Two MPP's LV6548.
Three Husky Big Batteries (48v), Battery SOC was around 70%, and dropped to 10% SOC in less than an hour.
My only diagnostic is Solar Assistant, (Love it).
Batteries when Low Voltage at 44v, system cutoff. About 3AM each time. By the time I got to the system, the battery voltage was down to 14V. In the past because of not much sun, and cloudy days, they would be at 44V but the last three failures down to 14V.
I isolated one battery, and attached my battery charger, the batteries would climb from 14V to 46V in less than 5 minutes, unheard of.
Ran system on two batteries, and same failure happen next night. Put the battery back in the loop, and disconnected another battery.
Charging again from the 14V back to 46V happened quickly again.
Ran system next day, same failure. So that told me the third battery was the culprit. Isolated that one, and system ran all night.
Now, have had all three running the system, without failure for about ten days, so what's up.
Hence, my question, how do I find out a battery that has a BMS that only communicates internally. No way to see any info?
Anybody have any suggestions?
Thanks for any ideas.
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