4@12v = 24v
I'm installing 4 -12v AGM batteries to power a 24v inverter. This is my first choice for wiring: and my second: Any pros or cons to either one?
Forum Discussion
I kind of think a shorted cell in a parallel application would be blown open. But I think most shorts are soft shorts.
I like redundancy. There's no redundancy in a single string.
If you're concerned about imbalance then parallel is the way to go. You got a shot at equalization when in parallel, not in series.
Sal
I like redundancy. There's no redundancy in a single string.
If you're concerned about imbalance then parallel is the way to go. You got a shot at equalization when in parallel, not in series.
Sal
lorelec wrote:
There are advantages and disadvantages to both. A battery that has a shorted cell (fairly common failure mechanism in older batteries) will become a sink and can drag down an entire bank of parallel-wired batteries. A shorted cell in a series string will simply reduce bank voltage by ~2 volts.
Personally I would choose series over parallel. Assuming you start will all new batteries of the same capacity, and you maintain them properly, there is probably less of a chance of an imbalance developing in the first place.
