Battery charging problem, maybe?
Not sure if this is the right forum or not, but here goes. A couple of months ago, I got a new to me 2012 Koala trailer. The dealer said he was going to put a new house battery in it. The house ba...
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MNtundraRet wrote:
Unplug the trailer and check the voltage at the battery terminals with the volt-meter.
If it reads above 12.6 volts right after unplugging it, charging has just been taking place. Now wait for about 24 hours (unplugged) and check the voltage again. The voltage should be holding at 12.6 to 12.7 volts. If it is lower than the battery is bad do to sulfating and poor management.
You described a weak battery in your post. What kind of battery did they install? Starting, marine, or deep-cycle? What brand? Have your checked the cells for low water level?
The converter/charger will charge at either about 13.7 volts, or 14.4 volts early on if 3-stage and return to 13.6 volts in 4 hours or less. When charged the meter would read 13.2 volts in about 24 hours (or less) if left plugged into shore-power.
My MH came with a WFCO 8945 (45 amp 3-stage charger) which still works fine. If the charger gets the charging pattern I mentioned it is working.
Thanks for the information.
The battery is an Interstate. It's the typical 12 volt marine type. The WFCO is the 8955 model. I know it's a 55 amp 3-stage charger.
After I get a new multimeter, I'll go through all those checks.
