Bert,
I think saying "I have never had to change a battery in a Cyberpower" is just the same as as saying you have never had to change a battery in your car. If you get a good one, you can probably get 3-4 years out of it, but in a cold climate you are for sure going to come out to a dead car some day beyond that. I am pretty sure all UPS supplies use similar battery suppliers. Just like your colonoscopy, you can put it off until age 65 if you want, but you take your chances by delaying preventive maintenance.
