Originally Posted by Riplin
We have a 31 FS. If we use the furnace at all the battery is always at 1/3 in the morning. I changed the battery and it is still at 1/3 in the morning. IMHO just not enough battery for the motorhome, Jayco should of made room for a second battery.
Riplin - keep in mind that the meter built into the camper is not accurate by any means. It can come close, but will never be a good indication. Most importantly, when you check the battery, make sure ALL loads are turned off. Preferably, leave them off for an hour or two (but I realize this isn't practical when camping).
Those built in meters are especially bad for telling when the battery is full. Are you camping, running a generator for a few hours to charge (checking the meter as to when to quit charging?) Sadly, this won't work out well as you get higher readings than reality right after/during charging.
Check your battery, with a cheap volt meter and hydrometer. This will give you an idea if it may just be bad.
31 foot is a big space to heat - it may take quite a battery bank to do better. That said, optimizing what you have may help. How far is your converter from the batteries? I ask because many models have WAY to much wire between the 2. This prevents the batteries from taking a charge without 10's of hours of generator time.
Also, look at your converter. If you are re-charging with a generator, a 2 stage converter will take 10+ hours, whereas a 3 stage can get you to 90% in a couple of hours. (lots of variables here, but in general)
Hope this helps...