So this guy showed up to my house and asked me if he could charge his trailer batteries- all 7 of them. So I said ok, figured I'd help the guy out.Well hes come back a couple times, Hes using a makeshift 70 amp charger for about 3 hours at a time and connects all the batterys together using very thin wire....I was wondering how much power/ money this charging will cost though the power bill cause I don't want my power bill racked up because of him. Any help would be great.
Just buy a battery tender and never call anyone to charge your batteries. Good ones go for around $100. Most of the tenders can maintain around 4-5 batteries year round. They will never over charge the batteries.
that guy is taking advantage of you. You can't tell me that he doesn't have access to an outlet at his residence to charge his batteries. He's probably just looking to get it done with no cost to himself. I guess if you want to keep letting him charge his batteries just keep an eye on your elec. bill and charge him the for the extra.