Forum Discussion
RoyB
Jul 07, 2014Explorer II
Every time I read someone has just changed out the battery and are having strange events I always think the battery terminals might be installed wrong.
Find the words "NEG" or the SYMBOL "-" stamped on the new battery case and make sure this is the terminal that goes to the trailer FRAME GROUND connection point.
If the battery is connected wrong or perhaps you sparked the cables when installed may be an in-line fuse close the battery or two fuses in DC Power Distribution Panel marked REVERSED POLARITY may be blown. With these fuses blown then the charging DC Voltages from the on-board converter will not have a direct path the battery due to the blown fuses.
Having a inexpensive multimeter on hand is almost a must have items for us RV'ers. They only cost $7-$25 available from LOWES-WALMART-Any number of autoparts stores, and AMAZON...
Most definitely pick one of these up for you RV TOOL Box... Will take care of all the guessing what may be wrong. i.e. A fully charged battery will read 12.6-7VDC at its terminals without shore power turned on. When you connect up to shore power this DC VOLTAGE should jump to 13.6VDC telling you the on-board converter, fuses, and batteries are all connected properly.
Roy Ken
Find the words "NEG" or the SYMBOL "-" stamped on the new battery case and make sure this is the terminal that goes to the trailer FRAME GROUND connection point.
If the battery is connected wrong or perhaps you sparked the cables when installed may be an in-line fuse close the battery or two fuses in DC Power Distribution Panel marked REVERSED POLARITY may be blown. With these fuses blown then the charging DC Voltages from the on-board converter will not have a direct path the battery due to the blown fuses.
Having a inexpensive multimeter on hand is almost a must have items for us RV'ers. They only cost $7-$25 available from LOWES-WALMART-Any number of autoparts stores, and AMAZON...
Most definitely pick one of these up for you RV TOOL Box... Will take care of all the guessing what may be wrong. i.e. A fully charged battery will read 12.6-7VDC at its terminals without shore power turned on. When you connect up to shore power this DC VOLTAGE should jump to 13.6VDC telling you the on-board converter, fuses, and batteries are all connected properly.
Roy Ken
About RV Tips & Tricks
Looking for advice before your next adventure? Look no further.25,102 PostsLatest Activity: Jan 17, 2025