I have 4x 12v 100ah batteries in 2s2p for 24v.
Today my inverter set off an alert, so I checked the battery voltages, and putting a volt meter on each battery, the voltage is different. On both of the 2s batteries that make the 24v one is 14.1 and the other is 13.3.
How is that even possible?
Two batteries are connected together to make 24v. Those two are connected in parallel. The positive term on the left pack goes to the + bus bar, and the negative on the right pack goes to the - bus bar. From those bus bars goes to two scc and the inverter.
All battery cables are 2awg copper.
The only thing I can think of is that the parallel + and - cables are not equal length. The - cable is longer.
Today my inverter set off an alert, so I checked the battery voltages, and putting a volt meter on each battery, the voltage is different. On both of the 2s batteries that make the 24v one is 14.1 and the other is 13.3.
How is that even possible?
Two batteries are connected together to make 24v. Those two are connected in parallel. The positive term on the left pack goes to the + bus bar, and the negative on the right pack goes to the - bus bar. From those bus bars goes to two scc and the inverter.
All battery cables are 2awg copper.
The only thing I can think of is that the parallel + and - cables are not equal length. The - cable is longer.