Tp link tl pb10400 10 400 mah portable power bank usb battery charger tp link tl pb10400 p tp link s tl pb10400 portable power bank usb battery charger has an impressive capacity of 10 400mah that lets you charge a smartphone 3 to 5 times keeping your devices running all the time dual usb ports 5v 2a and 5v 1a allow you to charge two devices simultaneously p p the tl pb10400 s multiple protection against short circuit over voltage over current over charge over discharge and ov