Dual Batteries connect Second Battery to ACC

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lone

Newbie
Joined
Sep 13, 2021
Messages
1
I'm not sure if it is possible but I would like to use a second (auxiliary battery) battery to power the ACC for inside the vehicle lighting along with using the alternator to charge the second battery and the starter battery by the alternator. I believe I'd need to use a dc-dc charger and possibly a battery selector switch.

If my direction is not a good way to accomplish my goal then suggestions would be great. I've included graphics that may explain better what I'm trying to do.
Thank you,
Lone
all_devices.png
 
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