Features: Suitable For RIDGID 18v Batteries Pack (Not Compatible with 18v Advanced 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 ridgid 18v battery is fully charged before use. adapter doesn't support charging for Ridgid 18v batteries (please use the original charger) WARNING: Not Compatible with RIDGID 18v Advanced 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)