I leave my batteries in then I plug into house 120 volt power for 24 hours the first of every month. I also checked the fluid levels during winterization in the fall. Mine will charge the coach battery and the chassis battery when plugged in. Has worked well for me in the long cold Minnesota winters. Good luck!
I have removed my coach battery for the winter and am storing in basement with a trickle charger. My question is will I be able to use the generator with the coach battery gone? I am new this and would like to know if anyone has left their battery in over the winter?