minn kota motor problems

[Ken Lyons]

Warm is fine. A loose battery connection can melt the post. Loose connections will be hot. The way you describe the intermittent on and off suggests a loose connection somewhere. Is this a 24 volt setup?
I don’t want to be a pia about this but anyone who is dependent on batteries really has to check voltages. The last time you charged that bad battery the voltage was above 12.8 for sealed lead acid and 12.6 for a wet cell. After a few days it would have dropped 3 or 4 tenths while the good battery would not have changed much at all. I’m not sure if the bad battery is the problem but it has to be replaced so you will find out.
As long as am lecturing let me say a good word about sealed lead acid if that’s not what you have. They can easily withstand discharge levels that will greatly shorten the life of a wet cell. They don’t emit fumes that will put holes in your clothes. They will hold a full or close to it charge over the Winter with out being topped off. That’s not all but enough for now.
Please let us know. We need your reports.