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6.4 Charging the Joye eGo-C 650,900,1000mAh battery: To charge the battery, screw the threaded side of the battery to the USB charger and then connect the USB port to the wall adapter or the computer. The LED light on the button will flash 5 times then go out, and the LED on the USB charger will turn red, indicating the battery is charging. When the LED light on the charger turns green, it means the charge is finished.