The Kind Pen Covert Cart Battery

Very discreet with hidden cartridge. Most features of any other brands in its category. 4 voltage levels, warming, draw or button activated, USB-C so no need for another charger. Nice look in green color. Button feels a little wobbly and can take multiple tries to change wattage or turn off. Carts fit snug in threads. Space that goes over cart is oversized, and doesn't have a built in gasket to allow for a tight seal around cart. This makes for inconsitant draws and causes cart to clog up. To fix this, I found a rubber grommet with a center that cart slid into snuggly. Unfortunately, it was huge and I had to trim the outside to fit snug, but not too tight to where I couldn't get cart inserted and back out. Has worked alot better since. Give it a 3 for its potential and mind on the need of being discreet. Not a fan of needing to customize it to make it usable. Not sure how this wasn't seen as a problem when it was designed. See this as being a problem with any other vape where cart is covered like this one. Worth the money after above modification though.

The bottom part that holds the 510 cart gets completely clogged. There is no way to disassemble that part to clean it. It was nice for a little while, but now unusable!! Oh well, there goes $35 down the crappy product drain!