I've heard some get seven years or longer out of T-105s, but that was in home solar installations. I believe five is about the norm for the kind of cycling golf carts and what we do to them. If they were any other brand, they wouldn't last that long. If you do have a single bad one, there's a chance you may be able to find one close to the same age at a golf course. That would only postpone replacing them all out a year or so though.
__________________
|