Type and size of batteries for dual system

[jwalker]

I did once explode a battery. I'd stopped for chips, climbed back into the car and turned the ignition key to start the engine. Bang! What a coincidence that car backfiring just as turned the key....er nope.... sulphuric acid running into the gutter and battery casing wide open.

[Poly]

Originally Posted by Aidan

It seems like a great little gadget and I cold also use it to Jump starts.
Will it charge from the Boat engine?

Mine does. Might be a bit "dodgy" leaving it connected for any period of time with the big croc clips. Mine came with a car 12V charger though - so you could connect that to trickle charge it.

[Cookee]

Originally Posted by Chris1573

Cookee,

So which Odyssey battery would be suitable for cranking a 90HP outboard?

Chris

To be honest it depends on the make and model - it should say in the manual or a dealer could tell you. Merlin might know, so it's worth a call - maybe someone has the same make and model on here that you could ask? The other thing to consider is that engines like the Mercury Optimax range need plenty of reserve capacity as they are very sensitive to voltage.