BLACK+DECKER LBXR2020-OPES3 Max 2-Pack Battery with 3 AFS-100 Spools, 20- Longer runtime and improved performance Compatible with Black & Decker 20 Volt Max lithium ion cordless tools 2 Year Warranty (3) AF-100 spools fit a large array of Black and Decker string trimmers Longer runtime and improved performance Compatible with BLACK+DECKER 20 Volt Max lithium ion cordless tools 2 Year Warranty (3) AF-100 spools fit a large array of BLACK+DECKER string trimmers