A large number of mods today require an 18650 rechargeable battery, which must often be purchased separately. Mod batteries are one of the most important parts of your device, and you should choose them carefully and purchase from trusted suppliers like E-Cig-USA.com. The best batteries for box-mod vaping devices use safe chemistry that is able to withstand periods of extended use.
A great example is Efest batteries. These batteries come in a variety of styles, including 18650, 18350 and 14500. Whichever vape box battery your device requires, Efest offers long-lasting performance and reliability. A vape battery pack from Efest utilizes IMR chemistry, which is considered to be the safest for use in vaporizers.