Discussed in these Forum posts:

Connecting 2 batteries
Recently bought a big battery 130ah and i disconnected my 40ah and stored it but im thinking i should connect it also. What is the best way?
I just saw a diagram where theres a lead between the 2 batteries from neg to postive and then leads from the 2 leftover neg/pos on each battery to the back of control panel. Would that be ok?
I do also have a battery switch onboard that came with the boat i could install
View topic

battery isolator switch

QLD

More like this

Return To Classic site 😭
Or... let us know if a problem, so we can tweak! 😅