Originally Posted by Zhanna
TT plugged in = microwave works. So it is getting power from the plug.
So somehow, the battery seems to have died? I think I'm confused?
Zhanna, the battery is 12 volts and powers the things that work off of 12 volts DC (ie slides, lights, furnace, propane leak detector) etc........ it works like your vehicle would.
Your television, microwave, outlets, and air-conditioner ONLY work off of 120 volts AC power......like your house would. If you are not plugged into a form of 120 volt AC shore power, you cannot use the four things aforementioned in your trailer..................but can everything else that is 12 volt because you have a battery.
Since you have two totally different power sources needed for your travel trailer.................they added what is called a converter. This converter will take 120 volts AC and convert it to 12 volts DC to power the 12 volt things instead of the battery. So, when your are plugged into an electrical outlet, the 120 volt stuff is powered.... and thru the converter, the 12 volt stuff is powered.
If you are not hooked into 120 volts AC power, then the converter doesn't work...thus all the 12 volt stuff runs purely off of the battery.
One more function of the converter is to actually recharge your battery when you are plugged into 120 volts AC power.
If for some reason the converter is not working properly, even though you are plugged into 120 volts AC, the converter is not providing power to the 12 volt stuff, but instead your battery is. Your battery has most likely run itself down, because the converter isn't recharging it.
You said your fridge was working off of propane. Even the fridge needs 12 vol DC power to run the control panel for it. If the converter isn't providing the power, the battery is...and is thus running down.
This may explain it better: