Originally Posted by gonzerdoodle
HAVING LOTS OF PROBLEMS WITH BATTERY DRAINAGE. THE ENGINE AND GENERATOR BATTERY IS ALWAYS FINE, BUT THE OTHER TWO ARE ALMOST ALWAYS DEAD. WE LEAVE THE BATTERY SWITCH IN THE ON POSITION ALL THE TIME. NOTE: WE HAD TO EVACUATE DURING THE BLACK FOREST WILDFIRE AND THE BATTERIES WERE GOOD FOR THOSE 4 DAYS WHILE PARKED (UNPLUGGED) AT SAFEWAY. WHEN WE CAME BACK HOME IT SAT FOR 2 DAYS AND THE TWO BATTERIES THAT RUN EVERYTHING WERE DEAD! WHAT ARE WE DOING WRONG? PLEASE HELP!
So many possibilities!
After running on the batteries for four days, did you completely recharge them before letting the unit sit for two days at home?
Besides leaving the battery cutoff in the "On" position, what else
are you leaving on? If the answer is "nothing" then why leave the cutoff in the "on" position? If there are
other things you're leaving on, accidentally or otherwise, that's where best to look for your answer.
It's possible that your inverter/charger is wired in parallel to the cutoff switch, so turning the cutoff to "off" doesn't also kill power to the inverter. Check to make sure, because some 120vAC appliances draw power even when switched off— such as televisions that have a remote control. If this is the case, you also need to make sure your breakers are switched off.
Also, how old are the dead batteries? Could be they're just too old to hold a charge anymore. Or if they're wet cells, they might be low on acid and need to be topped off with distilled water.
That should be enough to start with. If none of these issues explain your dead batteries, let us know and we'll think of something else.