STIHL COMPACT Cordless Lawnmower RMA 460The RMA 460 battery-powered lawn mower has many of the same features as the RMA 510 including an 18″ cutting swath and three mowing options including mulch, side discharge and rear bag. The RMA 460 can be powered with the AK 20 or AK 30 battery. This unit features an ECO model to conserve power when not required. This unit also has an extra storage slot for a spare battery.