Batteries have different capacity; is it advise to connect them in parallel? or should I use an Argo FET battery isolator?
asked
12V batteries (110Ah and 220Ah) in parallel using MPPT 75 / 15
Ant13, you could run two batteries of different sizes, but care should be taken as you could find that the smaller older battery could be held at a to higher voltage for to long and damage the battery, so I would not recommend it, also not all 12v batteries have the same charge characteristics.
Drobbly, i definitely would not do this where a starter battery is combined or you would find your self with a flat starter battery, use a battery charge combiner for this situation
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