battery, charger or wiring issue?
First camping trip out this year and the battery does not work. We only have one battery. If the 120 volts is off, the battery cannot run anything and lights dim down to almost nothing. We are alwa...
Forum Discussion
Shore power off, with battery cables connected and no 12VDC loads, voltage at battery is 11.1. Why would open circuit battery voltage go from 12.4 to 11.1 with DC loads turned off?
Same as above, but with a bunch of lights on, voltage at battery drops to 9.8.
I noticed when I had all fuses pulled out a few days ago and was putting back in, the one labelled bedroom made a thunk sound like sort of like there was a solenoid being energized. Not sure if normal and related to the voltage issue.
The connections at the mini circuit breaker are quite corroded and I couldn't get one nut to budge. I have no sandpaper with me and I cleaned what I could with a screwdriver and re-attached all 3 wires to one stud to test - no change but could still be a bad connection. Frame ground *looks* okay but can't get the lug off without a nutdriver.
Same as above, but with a bunch of lights on, voltage at battery drops to 9.8.
I noticed when I had all fuses pulled out a few days ago and was putting back in, the one labelled bedroom made a thunk sound like sort of like there was a solenoid being energized. Not sure if normal and related to the voltage issue.
The connections at the mini circuit breaker are quite corroded and I couldn't get one nut to budge. I have no sandpaper with me and I cleaned what I could with a screwdriver and re-attached all 3 wires to one stud to test - no change but could still be a bad connection. Frame ground *looks* okay but can't get the lug off without a nutdriver.
BFL13 wrote:
Need more info.
With trailer plugged in check the voltage at the wires that go on the battery. should be that same 13.7 volts as at the panel.
With trailer not plugged in and battery showing 12.4 with no load, now turn on some lights. What happens to the battery voltage?
Don't forget to ask, "80% of what?"
