Simply put, this trimmer is suited for light jobs at best. I don't consider my application heavy duty. It's just your normal yard trimming around trees, fence, sidwalk, etc.The .060 trim line just doesn't hold up and the bump line feeder either continually jammed or didn't work at all. During the first and only use, I had to take the feeder apart roughly 6 times.The battery charge held up as I didn't loose power in the 15 minutes of actual operation time (not including repair time).It is light weight and easy to handle. Easy assembly.The unit was returned to the store after it's first use in exchange for a slightly more expensive gas trimmer.I would give this a one rating, but I'll give this trimmer the benefit of the doubt in hopes it can function in maybe a smaller setting. However, like I said, my application is not heavy-duty.