FOR THE SMOKO E-CIG - If your e-cigarette battery doesn’t seem to be charging, there are few things to check. Firstly, when you screw the battery into the USB charger and plug it into a USB Port, the RED light should glow on the USB Charger and the BLUE light should turn on. If this is happening, then your e-cig battery should be charging. It will take up to 2 hours to fully recharge.