Features 1、Backup Power Converter: Can use spare 18V batteries as emergency power sources with this USB charger adapter, charging small electronic devices like phones, tablets, and other USB gadgets when AC power is unavailable. 2、ABS Material: Crafted from ABS materials, this battery charger adapter is sturdy and robust. Multiple built in safety ensure safe and secure usage. 3、Strong Compatibility: This USB charger adapter is compatible with for M18 series 18V li ion batteries, including for M18 B2, M18 HB3, M18 B4, M18 B5, M18 HB6, M18 HB8, M18 HB12 and for 48 11 1815, 48 11 1850, 48 11 1820, 48 11 1840, 48 11 1815, and more. 4、Compact and Portable: This battery charger adapter is compact and lightweight that can be easily carried in your bag or pocket for convenient on the way use. 5、Standard Size: This adapter is designed according to the size of the batteries so you can rest assured that the adapter will hold your battery firmly! Prevent the unexpected from happening. Specification Item Type: 18V Battery to Power Bank Adapter Material: ABS USB Output: DC 5V 2.1A Fast Charging USB Output: DC 5V 3.1A Compatible Battery Models: for 18V Battery for M18 B2, M18 HB3, M18 B4, M18 B5, M18 HB6, M18 HB8, M18 HB12 and for 48 11 1815, 48 11 1850, 48 11 1820, 48 11 1840, 48 11 1815 and other for M18 series 18V li ion batteries (with H are high energy power cells, without H are conventional power cells)(Battery not included) Package List 1 x Adapter