CRAFTSMAN V20 4.5-in 20-volt Max Trigger Switch Cordless Angle Grinder (Tool Only) in the Angle Grinders department at Lowes.com
DEWALT 20 Volt MAX Lithium-Ion 4-1/2 In. - 5 In. Brushless Paddle Switch Cordless Angle Grinder w/Flexvolt Advantage (Tool Only) - Town Hardware & General Store
Milwaukee M18 18V Lithium-Ion Cordless 4-1/2 in. Cut-Off/Grinder with M18 Starter Kit (1) 5.0Ah Battery and Charger 48-59-1850-2680-20 - The Home Depot
COMOWARE 4-1/2 Inch Cordless Angle Grinder, 20VBrushless Angle Grinder Tool w/ 4.0Ah Lithium-Ion Battery & Fast Charge - Amazon.com
Ridgid 18V Brushless Cordless 4-1/2 in. Angle Grinder Kit with 4.0 Ah Battery and Charger - Hediso