This is my third Black&Decker electric lawn edger...each previous one lasted about 4 yrs and I've been told that's about average.  Researched other brands of electric edgers but always come back to this one.  I like this one best--this new model is an improvement over the last one...seems to be more powerful and easier to maneuver.  I'm a 70 yr old female & still mow/edge my lawn here in central Florida.  Edging is a necessity for a nice looking landscape and my property has lots of sculpted areas that require edging.  Using this edger & a 100 ft electric cord, I have no problem taking care of it all and always get compliments from neighbors about my lawn.  Gave it only 4 stars because I wish these edgers would last longer.