Originally Posted by bodatiouskid
Tv Booster,radio, Heater fan all run on battery alone.Converter runs lights & other things,but is not charging battery.Can jump fron 12volt on converter to positive wire fron battery,but an scared it will overcharge battery.
It "sounds" like you are saying you can run TV booster, radio, lights etc when on battery "only", no 120 vac plugged in meaning no converter running. Please confirm this is correct.
Then, when you plug in 120 VAC and the converter is on, the lights work and other things but battery is not charging. Is the battery connected when this is occurring?
Do you have a volt meter? If so do this.
With no 120 VAC plugged in, wait 8 hours at least over night. This puts battery at rest and no surface charge.
With 120 VAC unplugged and convertor is off. Go to the battery and measure the voltage. Tell us that exact voltage.
Now plug in the 120 VAC and have the converter on and connect it to the battery. Measure the voltage at the battery. Tell us that voltage. You can unhook after test if you need to.
When a battery is being charged the battery voltage should rise to around 13.6 volts. If it does not rise that high then the battery is not charging.
Once a battery is fully charged and has waited over night for the surface charge to drain off a 100% charged battery will be 12.7 volts. It starts dropping down from there is is not fully charged.
See on the bottom of this web page for a voltage chart on battery resting voltages Trojan Battery Company
When the resting voltage (after 8 hours idle) 12.10 volts is 50% charge left. So 12.7 as 100% charge and with 12.10 at 50% you need to do accurate voltage measurements as 0.5 volts is a lot.
You have to figure out is your battery having issues, the converter having issues or some other problem.
Hope this helps and good luck.
What year and model camper do you have?
How old is the battery?
Did the converter and battery use to charge OK and now is not? Or did you just get the camper?
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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