I need to replace the batteries on my boat. I own a 21 ft. Sea Ray w/ Merc 5.0 I/O engine. I'm not sure of the difference between deep cycle, starting, & dual purpose batteries. Which do you suggest I purchase. Thank you!
I have 2 batteries on my boat. When I try to start the engine it almost kicks over but then just makes a clicking sound. I have taken both batteries out & charged them overnight. The charger reads a full charge.This has happened more than once. The lights , the bilge, & the engine lift all work...
