FHILO
Advanced Member
nope not on my 78 . just got done boondocking for 6 days & 6 nights . i had an older battery that will only charge to about 1/2 its original strength,so i bought a new one to take along as back up.turned frig on elec. 7 hours prior at home,i'm not yet capable of using it on 12 volt from my tow vehical while driving yet .so it was off for say an hour itll we got to the state forest where we were camping,then turned it onto propane & it ran for 6 days & nights perfectly.cold in fridge frozen in freezer.i also have two 20 tanks and an automatic switch over on the tanks,but it only just emptied the first one by the 7th day and we were leaving.now i was camping so cooked outside mostly but i also used the stove to cook a late night snack and or heat up coffee too.the older battery was only used to raise the camper,maybe a total of 1 hour of using the campers lights & run the blower to the wonderful furnace (it was 40 at night) and i was very comfortable ,i think it would do fine in the 30's.anyway the battery lasted right up till it was time to go and wasn't dead but would not lower the hi-lo. had to use the spare battery and we were off and running.at 1/2 charge the old battery lasted 6 nights 10 to 12 hours a night of what i would consider mild use,so my conclusion is the blower will not run the battery down in one night no way. with a new battery i should be able to run the furnace none stop day & night for at least a week.the propane 20 lb. tank ran the fridge/freezer and the furnace and in 6 days 6 nights used 1 tank,so two would make it around 12-14 days.using the camper lights in my opinion is what can easily kill even a good battery.best i can tell you there is i'm going to use a solar panel and hook it up to a fully charged battery right from the start as soon as i arrive at the site .they say that way the solar panel keeps the battery from losing any power and keeps it fully charged while in use.love that hi-lo