I have been disconnecting it when not in use. I thought it was one of those old lantern style batteries but it is a rechargeable sealed gel cell. I guess I should have been charging it on a battery tender. It was dead so I have it on a 1 amp charger. If it doesn't come around has anybody replaced it? Doug

They are cheap. Mine is always dead. I just let it recharge when towing and hope to never need it right away

You can get them at Batteries Plus. It's the same type of battery used in home security systems for backup.

northern tools has em as well... even tractor supply...

Thanks for the replacement options this one won't take a charge. This fall I'll have to remember to disconnect it and bring it inside. My barn where the boat stored isn't heated. Doug

I recommend one of the many models of float chargers. I have a charger for each of my "toys." I buy them at Ace Hardware for about $26. Cheaper than replacing a battery and I always know everything is ready when I want to use it. I'll get the model info if you are interested.

I called the local interstate battery dealer, they wanted almost 40 dollars for a battery. Grabbed the phone book, found a local hole in the wall guy, Bam 13 bucks out the door. The batterys look Identical, have the same numbers and markings as the one interstate offered

Less than $20 bucks at Batteries Plus last week. (I needed one too, thanks Doug!!)