We're getting our travel trailer ready for our first trip of the season, and we're having a strange batttery problem. When the battery is disconnected (via the trailer's battery disconnect switch), our multi-meter shows 12.7 volts on all 4 battery terminals. But when the battery is connected, the battery shows 12.7 volts on 3 of the terminals but only 11.7 on the fourth (which looks like the one going into the RV according to my husband), and we get a reading of "E" on our trailer's battery meter. (The 11.7 reading on the fourth terminal is with everything in the trailer off except the things that are always "on" like the smoke and CO2 detectors). Running off the battery, the lights in the trailer are working, but not enough power to run the water pump. When we plug the trailer in and run off electric, everything works.
There was some corrosion on the battery terminals which my husband cleaned up, but we're still having the problem.
Any thoughts on what might be causing this problem?
Thanks!!
There was some corrosion on the battery terminals which my husband cleaned up, but we're still having the problem.
Any thoughts on what might be causing this problem?
Thanks!!