diy solar

diy solar

Overkill solar BMS problem

Joeges

New Member
Joined
Apr 18, 2021
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2
I have purchased 4 12 volt and 3 24 volt BMS
I tried to adjust the battery voltage through the app
on the 12 volt BMS I couldn’t get the app to accept the input
on every battery group #2 would not accept the voltage I was inputting
i measured the battery voltage and it above 14.4 volts but the app said my voltage was 10.5 volts
anyone else having a problem.???
thank y for all replies
 
I tried to adjust the battery voltage through the app
A BMS is not for adjusting anything on a battery let alone its voltage. A BMS is a safety disconnect for over and under voltage, over current and a few other similar things that keep the battery safe.
i measured the battery voltage and it above 14.4 volts but the app said my voltage was 10.5 volts
Happen to have a picture of your battery, connections and balance wires?
Have you checked that your balance wires are on the correct terminals:
pin 1 to cell 1 negative. pin 2 to cell 1 positive. pin 3 to cell 2 positive...

And check voltage from pin 1 to pin 2 should be ~3.2V.
pin 1 to pin 3 should be ~6.4V
pin 1 to pin 4 should be ~9.6V and so on all incrementing by roughly 3.2V
 
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