Features: Suitable For Black Decker 20v MAX Lithium Battery Pack (Not Compatible with OLD 18v Ni-CD Battery). For Bauer 20v MAX Platform Cordless Tools. Professional compact design, Built-in removal tool release switch. Make full use of your 20v MAX battery to extend Bauer 20v tools work efficiency and reduce downtime adapter doesn't support charging for Black Decker batteries (please use the original charger) WARNING: Not Compatible with OLD 18v Ni-CD Battery (different pin sorting & size). 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)