Originally posted by popsracer
Figure on 1-2 years of life in normal operation if properly taken care of.
Personally, I'd say more like 2-4 years of use, but I guess it depends on the amount of use, the amount of charge/discharge cycles, the load put on the battery and obviously the care of the battery.
Keeping track of how often you use it and when you charge it would be something good to do if you are anything like me and forget about charging your gel cell the day before you use it.
I write it down in my setup notebook.