Green and blinking slowly means the battery is charging. Green and blinking quickly means any one of the following: - the ambient temperature is not suited to charging. Charge the battery indoors with an ambient temperature of 5 deg C to 35 deg C (41 deg F to 95 deg F). - the USB cable is not connected correctly, or the battery is faulty. Make sure the USB cable is connected correctly and replace the battery if necessary. - the computer is in sleep mode and is not supplying power. Wake up the computer. - the battery cannot be charged because the computer cannot supply power to the camera, due to the computer's settings or its specifications.