Who to believe?

Interstate batteries are not worth a **** anymore. IMO. Camping world sells good deep cycle batteries...and a 15 Grand travel trailer is cheap. Hate to say.

X2 when I bought our used camper from a dealer a few years ago, everything worked great.

They put a new interstate battery in it.

I hooked the camper up the night before we were going to leave, it drained the battery in my truck.

Jumped the truck, grabbed the battery charger out of the garage, and went camping.

The plates in the battery in the camper had melted together, when I had time to look at it.

Also every new interstate battery I have had only seems to have a 2 year max life.