The NEW 21” Power + Mower is now available in Self-Propelled! Receive all the torque of gas without the noise, fuss and fumes. The EGO 56V Lithium-Ion Mower is powered by EGO’s high capacity 7.5Ah ARC Lithium battery. The Power+ 21” Mower delivers up-to 60 minutes of run-time (with included battery), rapid charging and durability in all weather conditions. The NEW self-propelled function is variable speed, pick your pace. The advanced EGO POWER+ 56V ARC Lithium battery uses industry-leading technology to deliver Power Beyond Belief and is compatible with all EGO POWER+ products.