The package comes with a 650 mAh battery and a usb charger. The blister package is shipped with the battery in the off position. To turn it on, click the battery button 5 times and it will flash and turn on. To turn off, do the same 5-click button press. To fill the clearomizer simply unscrew the black mouthpiece and slowly pour the e-juice into the opening around the inside casing. Be sure not to get it down the metal center tubing as this will cause the e-juice to run out and end up on the battery. Only fill the clearomizer to the rubber on the bottom of the coil so you leave a gap for air. Tip the clearomizer mouthpiece side down to get the coil wet. You may see a bubbling of e-juice as it is soaking into the coil. Tip the e-cig back to upright position and take a slow puff while pressing the button on the battery. After taking a few puffs be sure to tip the e-cig so the coil stays wet then continue to puff. The battery will have a charge for up to 6 to 8 hours of vaping time (mostly depends on how much it is used). When the battery runs out of charge, simply plug the usb charger into a computer usb port. You can also plug the usb charger into a usb wall adapter and a car adapter. The light on the usb charger will be green. Screw the battery on slowly and do not overtighten. Just turn the battery enough to make the connection and the light turns red. Turn the battery just a small bit more. If you overtighten it, the usb charger may break. It takes between 1-2 hours to fully charge. When the usb light becomes green, the battery is fully charged so unplug the battery. Do not charge overnight as this may cause overheating of the usb charger and will shorten the lifespan of the battery. Always charge where you can monitor it as it is an electronic device.