I just got back into fishing from a boat and bought a 1981 basstrackerIII. I have a question on charging my deep cycle troller battery.The batteries are in the same compartment as the 2 6 gal steel gas tanks. What is the safe and proper way to charge the trolling battery. Can i just use my regular charger on deep cycle 2 amp or do I need to buy one I see in the stores for mounting in boats? I am worried about the gas tank located close to the batteries. Thanks for any help.