I guess I got lucky with my battery powered Berkley. I've had it for 3 years now. No telling how many crappie I've cleaned with it over that time. I took it this week to Canada. Where we stay there is no electric at the fish cleaning station. I cleaned 16 walleye, 15-17 inches in length every single day for our lunch. I didn't even have to replace the battery pack although I do notice it slowing down. Was thinking of buying the new lithium ion one to see how much longer it would last.