Looking for some electrical help. I have an A-Frame pop up camper. I replaced the battery early in the season as it died on me mid camping. Battery worked just fine for the rest of the weekend. 3 weeks later I charge the battery and check the lights. No issues. I hook up and drive 6 gourd to my destination. Get there and no lights. I found a blown fuse in the battery line. Replaced that and deep cycle charged the batter when I got home. All seemed fine during the next trip. Then again last week I plugged it in before I left and all seemed fine. Got to my destination and turned the fan on it spun a few times and stopped. Dead battery. I just bought a new one put it in yesterday all worked fine. Today battery is dead. I checked all the obvious things like making sure nothing is left on. Any help would be greatly appreciated.