16" ONE+ 18-Volt Lithium-Ion Cordless Lawn Mower (Battery and Charger Not Included) Electric maintenance free mower means no gas, oil or tune ups 40 volt 4.0 Ah EcoSharp rechargeable lithium ion battery 40 minutes of run time when fully charged Performs best on flat or sloped terrain with obstacles Detachable grass bag for easy clipping disposal