DeWalt launches its first line of premium 20V MAX 2.0 Amp (DCB203BT) and 4.0 Amp (DCB204BT) lithium-ion batteries with Bluetooth capability. These batteries pair with Apple and Android smart devices via the free Tool Connect App. The home screen allows users to remotely turn all compatible batteries on or off at once, monitor battery charge level, view Bluetooth signal strength and pair additional batteries. Users also can select an individual battery to view its diagnostics and change settings by tabbing through four pages: diagnostics, actions, info and alerts.