Bought the Cameo 2011 in June of 2010.. Last fall I left a switch on and left at rv repairmen. Battery was dead. Had to move trailer to a body shop thanks to a tree, and told them about the batteries not being up. Said they would charge them up. I don't think they did. Couple of months later it was repaired. Moved to rv park and all was fine. Got it home and put in storage. Went back a few weeks later and the RV Marine batteries was dead. Mechanic said these were very good batteries, so had him order same brand. I think the freeing weather took them out after they became dead while waiting for body work.