Well, learning some lessons on my Momentum. We have no power so everything is coming from generators. I ran the Onan in the RV for a couple of days but last night, It was supposed to be only around 30 for a low.

I decided to give the onan a break and ran a cord to it from our genset hooked up to the house. I put a battery charger on one of the batteries and put it on 2 amp slow charge. I set the central heat on 55.

When I went to check it this morning the heat was out and the batteries were completely dead. So I hooked the RV powercord up to my genset via an extension cord and a 110v adapter plug.

The on board charger got the batteries charged back up today.

I know people boondock with these rigs. The two batteries wont run the heater for an extended time?
Or do you think I have a bad battery?