BLACK+DECKER SMARTECH Bluetooth 20V MAX Lithium Battery 1.5 AH (LBXR20BT) Free BLACK+DECKER App (iOS and Android compatible) allows you to connect your battery and provide remote battery locking/unlocking Battery locate feature, Battery charge indicator, Programmable alerts and reminders Built-in portable charger to conveniently charge your phone and mobile devices Manage battery remotely via app or with on/off button Part of the 20V MAX System - 1 System. Endless Tasks. Power for your Style