Paul, you said you have a two battery setup...Are they switched? If so, do you run one Starting battery and one deep cycle? I have a starting battery set on #1 to start the engine and a Deep Cycle on #2 to run my electronics.. You'll have no worries with it set up like that. Use #1 to start engine, use All or Both position when running to charge both batteries. Use #2 when drifting or sitting with engine off to run electronics... I know I'll always have a fresh battery this way.. I've sat out there for hours running my electronics, live well, radio and what have you with no worries because my starting battery is isolated and fully charged.
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