LostPiker Posted November 11, 2020 Share Posted November 11, 2020 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? Quote Link to comment Share on other sites More sharing options...
Andy135 Posted November 11, 2020 Share Posted November 11, 2020 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. Quote Link to comment Share on other sites More sharing options...
suzook12 Posted November 12, 2020 Share Posted November 12, 2020 quick search shows the Yam as having a 16A alternator. Depending what you want to run from the 2nd battery, you could use more common cheaper components as the charge is much less...... Quote Link to comment Share on other sites More sharing options...
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