Lookah Snail 2.0 is one of the best 510 thread batteries for cartridges designed to utilize oil concentrate carts such as Exotic Carts, Smartcart, and other vape carts. It is smaller than most vape pen-style batteries and compatible with most types of 510 thread vape cartridges and is ideal for use with THC or CBD oil carts. 

The Lookah Snail 2.0 features a 350mAh battery capacity with a 510-thread connection. The snail doesn't have temperature control heat settings; instead, it uses three variable voltage settings for temperature regulation. This is a similar way many vape mods and ecigs work. The snail is not draw-activated but has a preheat mode. With the indicator light moved to the top of the device the snail 2.0 makes it easier to see the settings at a glance. 

It comes in various colors.