RYOBI 40V 12 in. Cordless Battery String Trimmer with 2.0 Ah Battery and Charger RY40240 - The Home Depot
Wild Badger Power 40-volt 13-in Straight Battery String Trimmer with Edger Conversion Capable 2 Ah (Battery and Charger Included) in the String Trimmers department at Lowes.com
Amazon.com: Greenworks 40V 14" Brushless Cordless (Attachment Capable) String Trimmer, 4.0Ah Battery and Charger Included : Everything Else
Amazon.com : PowerSmart Cordless String Trimmer & Brush Cutter 2-in-1, 13" Battery Powered Weed Eater, with 40V 4.0Ah Battery and Charger Included : Patio, Lawn & Garden