DC 4:20 cartridges are priced at $25 each.

Battery Instructions: Remove cartridge from battery before charging. DO NOT USE “FAST CHARGERS” to charge your battery. To turn it on/off, click on the button 5x. Turn to adjust temperature on the bottom.

Disclaimer: Prolonged heat exposure (i.e. leaving it in hot cars or in pockets on warmer days) can cause contents of cartridge to thin out and leak through. Cartridges are rated for thicker oils only.