Hi
I installed 2 12v 330ah Smart Lithium Batteries with a ve.bus bms v2.
Connected the batteries in series to run my 24v system. Everything works fine but the batteries have different voltages and status in the app
Is everything ok ?
Thanks Markus
asked
battery voltage in series
Before connecting cells or batteries in series, you must make sure they are all at the same charging level.
Since an intermediate charging level is extremely difficult to be determined accurately, best option is to have them fully charged before connecting them in series.
If you have an MPPT, you can use it to charge each 12V battery separately.
If possible, partially discharge them (let's say to about 3.10-3.15V cell voltage/ 12.4-12.6V battery voltage) before fully charging each separately.
You need a balancer.
