Quote:
Originally Posted by Jbrisbin
Does anyone know if the inverter is accidentally left on, will it drain engine battery?
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No it shouldn't, but it will drain your house batt's over a short time. Make sure you ALWAYS turn OFF the invertor, main chassis batt switch and the main house batt switch before you store the coach. We never turn our inverter but we're always hooked to shore power.
BTW...even after turning everything OFF, look at the dash and see if your radio switch is turned OFF. Many coaches (like ours) has a separate switch for the radio. Be sure that switch is turned OFF too just to make sure the radio isn't draining the chassis batt. I know this sounds a little crazy but check it. If you're unsure which way is OFF for this switch, check your manual.
If your batts were drained to very low levels (like below 11.0 or less) they are probably trashed now and probably will never be able to be restored to a healthy, reliable condition. Do a gravity test on each batt cell with a GOOD hydrometer to determine their current condition. (check YT, search RV Geeks on how to do this)
There are a lot of things that could still pull some power from the house batt's even with all the above things turned off, like the CO2 alarm, possibly smoke detectors, etc. but they are unlikely to drain the batt's to critical levels unless you don't drive your coach very often.
If you decide to try to charge and batteries back up after performing the above tests, be sure to disconnect everything from your batteries first and isolate them. If you don't, an auxiliary charger—could—send high charge voltage to things like your fridge and other electronic board controlled devices and damage the control boards.