how big of gauge wire to 2nd battery?
i have a 8 gauge wire that i wanted to use to run a 2nd battery for my amp when my car is off. i got all of this for free and figured i might as well use it. i only have a small amp that pulls 30amps max. so could i put a 30 or 40 amp fuse on the 8 gauge wire going to the 2nd battery? would this blow from the car simply trying to charge the 2nd battery? i also have a isolater
i have a 130 amp alternator.
- realtor.sailorLv 71 year ago
The location of the battery will be a problem. You'll probably have to mount it in the trunk then wire it in "series" to the car's battery. Then add a marine "on/off" (or similiar) switch to isolate the battery when the car is off. Charging won't be a problem. I have 6 batteries on my boat and a 90 amp charger takes care of them.