Join Date: Sep 2004
Thanked 27 Times in 18 Posts
Rep Power: 11
Re: Winter is coming -Battery Question?
I left batteries (2 banks of 350 and 450 Ahrs and a 110 Ah start battery) connected to the 100 W solar panel all last winter. I checked them every month or so and found the voltage above 13 V on every visit. When I'd turn on the battery charger the amp draw would quickly drop which is a good indication that the solar panel was keeping the batteries well charged. I might add that the boat and panels were covered w/ 7 mil white shrink wrap and the solar panel still worked fine.