Hey folks, apologies to start a battery thread when there are plenty out there. However after searching the forum I have not found an exact model number for a replacement battery. The stock GT14B-4 is very hard to find by me. I purchased a Duragold from Autozone but it was extremely tight fit in the box and the positive terminal did not quite connect properly so I returned it. Is lithium the way to go. Any help for this is greatly appreciated.