Went to work on the bildge pump this weekend and found the batteries dead as a door nail...AGAIN! I've gone through two of these chargers in just over two years. Right after the warrenty ran out of course. Now the ones they sell have a two year warrenty but I don't think I want to mess with it. What are you guys running in your boats? I've spent so much in fishing stuff over the past month already, and now I have to drop more on this.