CRAFTSMAN V20 20-volt Max 13-in Straight Battery String Trimmer with Edger Conversion Capable 2 Ah (Battery and Charger Included) in the String Trimmers department at Lowes.com
Earthwise Power Tools by ALM 10" 20V 2Ah Lithium String Trimmer – American Lawn Mower Co. EST 1895
DEWALT 20V MAX Cordless Battery Powered String Trimmer Kit with (1) 4Ah Battery & Charger DCST925M1 - The Home Depot
Cordless Weed Eater String Trimmer, Lightweight Push Lawn Mower ,24V Li-Ion Battery Powered for Garden and Yard - Walmart.com