Topic: Question about Noko 3 bank 30 Amp on-board charger and new batteries

Participant

Hi everyone. I have a 2012 Pantera II with an on-board Noko Gen 3 30 Amp charger. About a year ago I changed my 24V trolling motor to a 36V tm. I had Interstate 27 batteries that were about 2 years old and added another new Interstate 27 wet cell battery. I use the Noko to charge my tm batteries and bought a Guest for my cranking battery. For over a year the Noko has charged all 3 deep cycle batteries without a problem. Last week I decided to replace the 2 oldest Interstates with Deka dc31dt batteries. When I brought them home I plugged my Gen 3 charger in. The next morning, I had 1 green light and 2 red lights. I havent taken the boat out yet so I am getting a reading of 36V on my meter. Do you think the problem is with the batterys age difference, size difference,the charger or is there a problem at all? In the 4 years I have owned the boat I have gotten 3 green lights within about 6 hours regardless of how long I used the tm. I guess I need to know if I need to replace the older Interstate 27, the charger, or if the problem is something different. BTW I searched the forum and the most informative posts were from 2011 that recommended the Lester charger but Im not sure that would solve this problem.Thanks

Bass Cat Boats

Keymaster

The Lester charger wold solve all problems with onboard chargers. Still the issue is what you need to address and find out if the charger is works, the fuses are good and the connections are solid. If the charger is not firing off the Batteries then you can flip the leads around and see that the internal separate (3) chargers are compatible with other batteries. If exchanging the leads to other batteries doesnt work and a voltmeter says its not working, then we think you had a battery charger issue and didnt realize it. This would have resulted in a faulty battery which you obviously had before.