U510 USB Port Charger for Blu type small e-cig batteries.
USB charger is ONLY to be used in conjunction with small 510 model style batteries 180mah or 280mah model battery into your USB wall adapter or USB port. The LED light will turn red indicating that the battery is charging. When the battery is charged, the LED will turn green to indicate that the battery is charged and ready for use.
Input Voltage: DC5V
Output Voltage: DC4.2V---200mA