Multiple batteries


Full Member
I’m having a brain fade moment. Can anyone help?

Apart from cost and space, what are the pros and cons of having multiple batteries versus a single battery? Apart from, I think, a benefit in having multiple batteries if you’re into high current draw,

For example: 1 220Ah or 2 110Ah or 3 70Ah?

Last edited:


Full Member
A few pros:
Easier to position; easier (lighter) to manhandle; if you have a failure, cheaper to resolve fault (if one smaller battery goes bad compared to one big battery);
A few cons:
more complex to cable up; more expensive (3 x 70Ah batteries almost certainly cost more than 1 x 210Ah battery); extra expense on connections and cables; more connections to go wrong and add resistance (thus causing losses)

probably more pros and cons as well for others to add :)

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