If you use a good charger it will actually tell you what's wrong with it if it's good it'll charge it in a way that protects the batteries they're expensive they're like a smart charger I bought one and I have 5 years on my batteries and they are tip top
You guys get crab pots down that way, we get lobster traps all over the place it's like driving through a minefield up here around the cape it's like everybody and their brother has a 10 trap license