The 510 cartridge
“510” is the thread size on the connector: ten threads at 0.5 mm pitch. It became the industry standard years ago, so a cart from one brand fits a battery from another. Inside the cart is a ceramic heating core wicking oil from the tank; the battery powers it when you draw or press the button.
Because the battery is separate, you choose it. A variable-voltage battery lets you run the oil cool for flavour or warm for bigger clouds, and a preheat setting helps when the oil is thick from the cold. When the cart is empty you throw away only the cart.
Safe Bet 510 cartridges
