Dual Batteries in Parallel

[Cuppa]

There ya go gemoc1........ the power of the forum community.

[gemoc1]

Yeah i like the idea of the isolator doing everything automatically, but still would be sweet to have a manual override incase i need it

[the evil twin]

Yeah i like the idea of the isolator doing everything automatically, but still would be sweet to have a manual override incase i need it

Almost al of the VSR style Isolators come wired for a manual override.

This can be a switch on the dash (say $10) if you prefer or simply connecting two wires bayonet plug style under the bonnet (say 50 cents) when required and disconnecting when finished.

[Cuppa]

Almost al of the VSR style Isolators come wired for a manual override.

And MudRunner’s one will do exactly that.

[gemoc1]

Yeah my boat is fitted with dual batteries and the (ON/BOTH/ON) style switch and this is kind of what i was thinking to do with the patrol, but then again the idea of an isolator doing it for me is very intriguing

[gemoc1]

Yep, i think the evil twin has got me set on a VSR style isolator haha! Great help thanks heaps guys

[moza]

if you use a victron or baintech vsr they have a overide switch function so if you do flatten your crank battery flick the switch it will link both and you can start

[Bruce McGregor]

The solution to this query is a Cole Hershey marine battery switch.
It has four positions.
Position 1 = battery 1
Position 2 = battery 2
Position 3 = battery 1 & battery 2
Position 4 = both batteries disconnected

[the evil twin]

The solution to this query is a Cole Hershey marine battery switch.
It has four positions.
Position 1 = battery 1
Position 2 = battery 2
Position 3 = battery 1 & battery 2
Position 4 = both batteries disconnected

Uuummm... no it isn't.

The OP wants one battery for SLI and not auxiliary loads and one battery for auxilliary loads and not SLI.
A Cole Hersey will not do that.
With a Cole Hersey, one battery does everything, the other battery does everything or both batteries do everything