Originally Posted by Ronnie
420 a/h each? Or all of them?
I figure about 100- 120 a/h each. Thinking of a typical marine deep cycle.
Yes. All 4 are 420 a/h. It would be problematic to use batteries of differing a/h capacity.
The batteries sold as "marine deep cycle" at the big box stores are not true "deep cycle". They are a hybrid start/deep cycle. They are cheap but not an ideal choice for deep cycle use.
Common, true, deep cycle battery examples would be GC-2, T-105, L-16 etc. They have significantly thicker plates and will give superior service/lifespan.