Posts: 410
Location: With my son on the water | That appears to be a Marinco Plug which are commonly used by boat manufactures. I learned Marinco Plugs are only rated for 40 amps and an 80 lb terrova which is a 24 volt draws 56 amps at full speed. (see the problem)
I had the exact same issue with my Tuffy so I upgraded to a Battery Tender Plug which is rated for 100 amp and 4 gage wire and soldered all the connections. (I checked the amp/length chart and 6 was questionable with the length I am running, I also put a master shutoff under my console). I haven't had a problem since.
I added the shutoff switch so I can easily turn off power to the TM which Minn Kota tells you to do when you are charging. I learned that chargers can emit some stray voltage or a voltage spike (not sure) which can damage the master circuit board in you TM.
Edited by btfish 8/26/2015 5:04 AM
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