Charge the batteries for 8 hours before you do anything else! Yup. Take them out of the box and unpack your charger and get them charged up before you do anything else to them. Why? The batteries are shipped from the manufacturer with about a 20 percent charge on them since they are lithium ion batteries and should be stored with a charge to make them last longer. Don’t vape your battery until it dies all the way down. When you notice a drop in vapor production and you know it is about time for the battery to go down just stop vaping on it and charge it back up until your e-cigarette finish charging. This will prolong the battery life.