100% Brand New; Voltage: 20V; Capacity: 4.0Ah; Type: Lithium Ion; Charger 100% Compatible with all Black & Decker 16V 20V Lithium Ion Battery Battery fully compatible with Black & Decker 20 Volt Tools LCS1020, LDX20C, LSW221, BDCDMT120, BDCDMT120IA, BDCDMT120F, BDC120VA100, BDH2000SL, BDCF20 etc Charges compatible with Black & Decker Lithium Ion 16V 20V batteries LBXR20 LBXR20-OPE LB20 LBX20 LBX4020 LB2X4020 LBXR2020-OPE LB2X3020-OPE LBXR20BT Built-in integrated microchip prevents overcharging and other malfunction to prolong battery life. LED temperature gauge lighting show the status as batteries are charged and maintained, full charger time is 7 - 10 hours as original. 1