Instruct: Classify an Amazon review into positive or negative sentiment.
Query: BEWARE WARRANTY REPAIR

Before buying this item beware of the issues involved with a warranty repair. I had my Black and Decker CMM1200 mower for only 4 months when the battery/charging system failed. The nearest factory authorized service was OVER 100 MILES AWAY. When I called Black and Decker's consumer '800' number, I was told to:A. Mail the mower to be repaired.B. Drive the mower to the service center for repair.c. Fix it myself and void the warranty.They finally relented and sent me a new mower. After a few hours of use and storing it over the winter THE SAME THING HAPPENED AGAIN! I ended up returning this to Lowes who gave me a full refund towards a gas operated model.Needless to say, I will not buy any Black and Decker product again, EVER!