i had the batteries charging this evening and it was picking up the charger though it was very slight, i connected the power to a seperate battery and that did nothing, talked to a nice lady at humminbird and she is sending me a few things to try but she did say that in a few cases it was not eliminated, i double checked the 3 amp fuse in the head of the terrova and replaced it for the heck of it and that wasn't it either, and i can't find anyone that has a capacitor decade box as of yet. ya'll keep your fingers crossed.