Support for USB input and output function, can be used for USB management or as a battery charger.
Can charge for 1pcs 18650/18490/ /18350/17670/17500/16340/14500/10440 lithium battery.
Can charger for USB device and battery simultaneously.
Can be used for data transmission, to transfer your date for your mobile devices.
Built-in reverse-polarity and short-circuit protection circuit.
LED screen to show the battery status.
Supplied with storage space for your USB cable, convenient for you to use.
High quality ABS fire retardant materials for security.