Spent a lot of time trying to find the answer to what might be a simple question. A buying guide would help iron this out.
I have two engines, one engine goes to an isolator which charges the following
two x XV31MF (aft) for the bow thruster (Total 220ah)
three x XV31MF (stern) for entertainment and engine start.(Total 330ah)
Reading the posts a 500am might be ok? My concern is the engines which are large volvo Penta start from battery bank 2. The batteries are say 1000 cold crank amps that’s 3000 CCA the shunts go up to 2000 amps.
So I am confused what amps I look at for the shunt
CCA is a lot higher than the amps
the above two groups are in parallel
|Capacity (C20)||105 Ah|
|CCA (EN)||740 A|