[The Newell]

After leaving my electric campsite, I stopped to dump. I always go innside and run the water with the pump to rinse things. This time, when I turned on the pump, I got a load beep and then all the battery power went off. I checked all the fuses and they were fine. When I got it home I plugged it in and the house electricty worked fine and I then had power again. Is this the sign of a bad battery or is there another problem.