adding a battery to a camper?

Iain

New member
On the front of my camper ther is a red and a white wire connector that are not connected to a battery of any sort. The 12 volt system in the camper has a wire labled to charge 12 volt battery and it is the other end of the red wire at the front of the camper. Can i just add a battery to these wires, and if so when there is no 110v power will the battery automatically run by sending electricity through the power converter?
 
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