Even if you have a top of the line vape tank and only use premium e-liquid, your vape mod is only as good as what is powering it. That is why it is important to have a battery that is compatible with your gear, e-liquid, and the type of vapour you like.A versatile mouth-to-lung battery that many vapers swear by is the 18650 e-cig battery, which is a rechargeable lithium ion battery. The first four digits (1865) refer to its dimensions, making this battery 18mm around and 65mm long.Vape Battery Maintenance and SafetySo you’ve got your top of the line...