Post By: Gwill Posted: 4/14/2019 12:23:26 PMPoints: 3650
So this year I replaced my 4 year old trolling motor batteries because last year I noticed that a few days after a full charge my trolling motor battery meter was showing the level down to three bars. After installing new batteries I am seeing the same thing. I have a good 3 bank charger and always un plug the trolling motor and there is nothing else on the circuit. I also have a lite portable minn kota tester that shows the same battery drain. Any ideas?
Sounds like it could be a short somewhere in the wiring harness or wiring. Is your boat aluminum? Fully charge your batteries and test them after a day or two. If they still have a full charge, that should tell you itís in your system or the batteries themselves are bad. Just a couple of ideas. Good luck. Ski
Gwill . . . .a volt meter is your best friend.Ski hit the good points.I got nothing else to add. Good luck and let me know if you are replacing any of the battery size wires. I got the heavy duty termanals crimping device. HP
You know I experienced a similar thing on my charge indicator on my terrova, a friend of mine who is a master electrician checked it out for me turned out the charge indicator on the motor was faulty. This might be some food for thought ,good luck stuff like that are very frustrating.
I agree with fom on the faulty meter...a good point. This winter, I had a 12 volt flasher battery do a similar thing. Registered 13+ volts on the meter, took it off the charger and the next day it had a reading of only 10.5 volts. Replaced the battery and solved the problem. Like HP said, a good voltage meter is your friend!