Ukoke 20-volt 9-in Straight Battery String Trimmer with Edger Conversion Capable 2 Ah (Battery and Charger Included) in the String Trimmers department at Lowes.com
DEWALT 60V MAX Brushless Cordless Battery Powered Attachment Capable String Trimmer (Tool Only) DCST972B - The Home Depot
Greenworks 80 Volt 16-Inch Cutting Diameter Brushless Straight Shaft Grass Trimmer (1 x 2.0Ah Battery and 1 x Charger) Green 2112302/ST80L211 - Best Buy