One of the best 510 thread batteries for cartridges made to work with oil concentrate carts like Exotic Carts, Smartcart, and other vape carts is the Lookah Snail. It is suitable for usage with THC or CBD oil carts because it is smaller than most vape pen-style batteries and compatible with most 510 thread vape cartridge types. The 350mAh battery of the Lookah Snail has a 510 thread connector. The snail employs three different voltage settings rather than temperature control heat settings to regulate its body temperature. Many e-cigarettes and vape mods operate in a similar manner. The snail has a preheat mode but is not draw-activated.