Features: Suitable For Black & Decker 20v MAX LBXR20 Lithium Batteries Pack (Not Compatible with 18v Ni-CD Battery). For DeWalt 20v MAX XR Cordless Tools (WARNING: Not Compatible with 18v Ni-CD/Ni-MH Tools). Professional compact design, Built-in removal tool release switch. Most 20v MAX XR tools have built-in under-voltage BMS protection, please make sure your B&D 20v battery is fully charged before use. adapter doesn't support charging for Black+Decker 20v MAX batteries (please use the original charger) WARNING: Not Compatible with Black&Decker 18v Ni-CD Batteries and DeWalt 18v Ni-CD/Ni-Mh Tools. adapter does not support the reverse charging function, please use the original charger Make sure that the battery is fully inserted for normal use When you need to charge the battery, remove the converter Package Includes: 1*Adapter (Adapter Only, Tool & Battery Not Included)