Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Trims well... when it works

I've had this trimmer for less than a year and it only worked well for about three months. After that the battery started deteriorating and it was working slower and slower until it would only work well with it plugged in the wall. Now the battery is bad and is not user replaceable. I called the recommended repair depot in San Francisco, but they never returned my calls. I'm replacing it with the plug-in version so I have no more battery worries.Andis Professional 04710 T-Outliner Personal Trimmer