Away from home? It's simple to install a 1000w inverter to recharge saw batteries in the woods. If you want to plug it into your trailer light plug, make sure you have a large enough wire and fuse to the hot prong on the plug to handle the amps. You might need to beef up the ground wire, too.

“In a time of deceit telling the truth is a revolutionary act.”
― George Orwell

It's not over when you lose. It's over when you quit.