My Foxpro should be back this week from the repair shop, that was one of my complaints. Get yourself another battery tray, use high quality rechargable batteries, not the Walmart type, but go with Sanyo and get ourself a Multiplex LN5014 charger. The charger will run off 12VDC it provides all the safety features that you will need to protect you batteries, including auto shutdown. Don't waste you time and money on cheap chargers. You have a quality unit that deserves proper care. You may also want to look into the "powerizer", supplier online and get a external battery roughly about the same size that is in the unit. They have a great 4500MAH 12 volt pack that will work fine, or you may choose to go the Lithium Ion route like I did. You will spend a few bucks, but you won't be left in the cold with only a couple of hours or less battery life.