So i am installing a dual battery bank, separated via perko 1/2/all/off switch. My question is how do you guys charge the second battery? I understand is as POS1 crank, then run on POS1 to charge crank, then switch to POS2 when parked, drain out that deep cycle battery then switch back to 1 to get home. Can I start with POS1 then with the motor running switch to POS2 and re-charge 2 with the engine running or will that kill my alternator? Is the only option to trickle charge at home?
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