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Split Charging Batteries


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My boat only has one battery. I'd like to add a leasure battery and a split charge relay. The engine is a 2 stroke yamaha 60hp outboard, do you know what sort of amperage the outboard will be kicking out and so what amperage relay I need?

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My strong recommendation is that you invest in a Blue Sea Mini Add a Battery kit (https://www.cactusnav.com/bluesea-mini-battery-p-15255.html). It takes alternator outputs up to 65A which is more than enough. For context, my Suzuki DF300 alternator puts out 54A.

The Add A Battery kit is a fit and forget solution to battery charge management and also allows battery isolation and combination with an On/Off/Combine switch. I fitted one to my Predator 165 and it was a simple install with the instructions they provide.

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