The capacity is for a battery device quite well. Unfortunately, the device comes with denser grass quickly to his knees and stops. So you have to go slowly. Well, a brush cutter with an internal combustion engine, the device is of course not comparable.
The Durablade-sounding hold very long, except for the cutting free of clay, concrete or plaster. Nevertheless, one can expect that per application from about 1.5 hours a blade is at least on it.
All in all, I'm still satisfied with the device.
ATTENTION: Please not that appears like Amazon ("customers also bought ...") order the Red Blades from the previous model! The matching Durablades are black and designed differently.