Milwaukee M18 FUEL Brushless Cordless 21 in. Walk Behind Dual Battery Self-Propelled Mower w/(2) 12.0Ah Battery and Rapid Charger 2823-22HD - The Home Depot
Amazon.com : PowerSmart 80V MAX 21" Cordless Lawn Mower, 3-in-1 Brushless Electric Lawn Mower with 6.0Ah Lithium-ion Battery & Charger (DB2821) : Patio, Lawn & Garden
DEWALT 20V MAX 21 in. Battery Powered Self Propelled Lawn Mower with (2) FLEXVOLT 12Ah Batteries & Charger DCMWSP255Y2 - The Home Depot
DEWALT 2X20V MAX 21-1/2 in. Brushless Cordless FWD Self-Propelled Lawn Mower - DCMWSP244U2 | Blain's Farm & Fleet