12-V Failure
On first trip of the year old house battery (group 27) died 6 hours after setting up. All the 110 appliances worked, but all of the 12-V lights dimmed; battery indicator on the house monitor said it w...
Forum Discussion
Turn EVERYTHING OFF and unplug. Yank every single 12 volt fuse from the panel after marking which goes where.
With a charged battery (use jumper cables and charge from the car if necessary to recharge even if it takes 3 hours) disconnect the ground wire from the battery post and see if it sparks.
If it sparks, you have a sneak thief robber electrical drain.
Something is working when it shouldn't.
It's Dick Tracy and flashlight time.
If there is NO SPARK at the battery cable after you have yanked all the 12 volt fuses, replace the fuses one-at-a-time the one that sparks is the culprit.
A BAD CONVERTER CHARGER can draw battery power. To find this, disconnect the GROUND CABLE at the converter charger. Still being unplugged from shore power and with all the fuses out, there should not be a blue spark. BUT BUT BUT you have to strike the ground cable and restrike it quickly as capacitors can quickly gobble power. If you rub the ground wire to the terminal and the sparking seems to vanish for a bit then reappear this is not abnormal with some converters.
If the converter MAKES NO 12 volt POWER even when the rig is plugged in, fuses are in place, breakers reset, and negative cables AT THE BATTERY disconnected, the converter is not working.
Hope This Helps
Many fellow RV'ers make good neighbors and can help
With a charged battery (use jumper cables and charge from the car if necessary to recharge even if it takes 3 hours) disconnect the ground wire from the battery post and see if it sparks.
If it sparks, you have a sneak thief robber electrical drain.
Something is working when it shouldn't.
It's Dick Tracy and flashlight time.
If there is NO SPARK at the battery cable after you have yanked all the 12 volt fuses, replace the fuses one-at-a-time the one that sparks is the culprit.
A BAD CONVERTER CHARGER can draw battery power. To find this, disconnect the GROUND CABLE at the converter charger. Still being unplugged from shore power and with all the fuses out, there should not be a blue spark. BUT BUT BUT you have to strike the ground cable and restrike it quickly as capacitors can quickly gobble power. If you rub the ground wire to the terminal and the sparking seems to vanish for a bit then reappear this is not abnormal with some converters.
If the converter MAKES NO 12 volt POWER even when the rig is plugged in, fuses are in place, breakers reset, and negative cables AT THE BATTERY disconnected, the converter is not working.
Hope This Helps
Many fellow RV'ers make good neighbors and can help
