Charge your devices on-the-go with the promate energi-10c, a sleek and powerful 10000mah lithium polymer power bank with usb-c. This ultra-sleek power bank features an ultra-fast usb-c charging port and it can charge any usb-compatible device through its three output ports. It also includes automatic voltage regulation, which provides an optimum output based on the device connected. Energi-10c is compatible with all smartphones & tablets.