Reply With QuoteTwo words- Optima battery, expensive but worth every cent, I have a couple that are 6 years old that are still performing just fine.
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Keeper
Ok guys took the boat out today fired right up....read battery before 12.66 volts......when in idle or reved up just a little it moved to 12.99, didnt really test at higher rpm...when i got home i just disconnected to negative to ensure no loss of voltage
Slabmaster II
Two words- Optima battery, expensive but worth every cent, I have a couple that are 6 years old that are still performing just fine.
Capitalism works for men who do. Socialism works for men who don’t.
~ Daniel J. Flynn
Keeper - Sponsor
First a battery that has 12.65 volts has a full charge. With the motor running you should have at least 13 volts closer to 14 volts. I had a battery that kept going dead I took all the wires off the ground and one at a time touched the battery post . I found one that would spark it was for the marine radio. disconnect it and it solved the problem. Even thought the radio was turned off it was still drawing juice.
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