My 12 lights and other appliances do not work from battery

It was a resettable circuit breaker. Pickup a new one just in case it keeps popping.

Thanks to all for the help. I guess I get a little frustrated when I get treated like a total rookie. I have been fixing my own stuff for a long time because as a poor enlisted AF person we didn't make enough money to hire anyone to fix stuff for us. Now I can afford to have someone fix stuff but get much more satisfaction doing it myself. Hope all will forgive me.