The EGO 21" Power + Mower is the first lithium-ion mower to exceed the power of gas Receive all the torque of gas without the noise, fuss and fumes. The EGO 56V Lithium-Ion Mower delivers long-lasting power, rapid charging and durability in all weather conditions. Equipped with a large 21" deck, a run time of up to 45 minutes (with 5.0Ah battery), to cut your entire lawn. Compatible with all EGO POWER+ ARC Lithium batteries (available separately) to deliver Power Beyond Belief., Lot of 1