Join Date: Aug 2003
Location: Long Island, NY
Thanked 40 Times in 35 Posts
Rep Power: 12
You could have many or few problems, without doing some diagnostic testing there is no way to guess.
As previously mentioned, you need to buy or borrow a voltmeter. The cheapest model at Sears / Home Depot / Lowes / Radio Shack would be fine. Digital is better than analog, but analog would work to.
Your problem could be:
- a bad connection between the battery and the boat, either the positive or negative
- a bad connection between the battery and the charger
- a defective charger
- an undersized charger
- a dead battery
- a dry battery
- bad wiring on the boat
That's why it's impossible to determine the cause without a meter and a sunny day.
If it were my boat I would start by physically examining the battery. Are there dry cells? Is it cracked and leaking? Are the connections clean and tight? Is there corrosion or broken wires? After that I would remove, clean, and tighten all the wiring connections. Next, on a sunny day, I would disconnect the solar charger and measure the battery voltage. Then I would connect the solar charger and measure the voltage again. If the voltage doesn't go up, the charger is bad.
Perform those tests and let us know the results.
Deep Blue C, 2002 C&C 110
Mt. Sinai, NY
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