I bought a brand new battery last nov. At the time it ran just lights, sounder if I used it, socket to charge phone and stereo. It's a large deep cycle ( can't recall the ampeg as I lay in bed here rockin around)
All was fine until I added the fridge.i guess I get about 2 hours of fridge only use- as in using nothing else until the battery drops below 12. Now it seems that everything - even the things that weren't draining the battery - do drain it- like radio. Cabin lights. Socket charger. I know I need more batteries but I'm wondering what's more likely. Have I stuffed this battery or have I got a dud. I'll come to the boat after a week and the volt meters normal but after some usage it'll get pretty low- like below 10. I've been on the boat the last 7 nights and have had to run the engine every night to just charge my phone. It just doesn't seem to be holding a charge. I took it back to battery world about 6 weeks ago and they kept it for a week and charged it. The said that if I had anymore problems they would replace it. I don't know much about batteries obviously. Is it possible that the battery was a bit of a dud? Did the addition of the fridge just weaken it?keep in mind that I'd run the fridge for 30 min only. Just long enough to have a few coldies ready but now this isn't really possible. I can't even really use the fridge unless the engines running.