I'm a pretty hands on, build my own stuff including classic cars, frame off work. I have several cars, so, I tend to use car stuff way more than the next guy.This charger is fantastic for what it is, charges well, and is very light weight. The repair mode is awesome! I never thought it'd work, but I'll be damned, it does work and well! I always keep a couple dead batteries around for cores when I pick up a new one. I decided to try it on the oldest dead battery I had. The battery read 3.5v. AfteSee full review