This is a genuine OEM sourced replacement component which is designed for use with DeWALT power tools. It allows a user to charge batteries. Please note that a weak or defective battery can damage the charger. Weak batteries are batteries with bad cells. These type of batteries will not hold a charge. It will send a message to the charger...Read more to keep charging. This will eventually cause the charger to overheat and potentially smoke. Make sure to check the owner's manual for the correct application. Note, this high-quality plastic body battery adapter is sold individually.