The pick
Buy a 510-thread battery and separate cartridges if you vape more than twice a week. A battery costs $10 to $30. Cartridges cost $15 to $60 per gram in licensed US shops. The battery holds a charge for days at 3.3V to 3.8V, and you replace only the oil.
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Buy a disposable pen if you vape once or twice a month. A unit costs $20 to $50. No charger. No cartridge matching. No cleaning. The battery is sealed at the factory.
Cannabis Vape Battery for Beginners: How to Pick and Use One
How the two compare
- Hardware: a 510 battery is reusable. A disposable ships with a fixed battery and no charge port on most models.
- Oil: cartridges come in distillate, live resin, cured resin, and rosin. A disposable locks you to one oil from one brand.
- Voltage: most 510 batteries run 3.3V to 4.8V with a button or auto-draw. Disposables run a fixed 3.4V to 3.7V.
- Recharge: 510 batteries use USB-C or micro-USB. Some 1g and 2g disposables add USB-C. Most 0.5g units do not.
- Weight: a 510 battery with a 1g cartridge runs about 40g. A 1g disposable runs about 25g.
- Waste: two items per gram for the battery setup. One item per gram for the disposable.
Cost per gram
One 510 battery at $20 spreads over 20 cartridges. That adds about $1 per gram. A disposable adds $20 to $50 of hardware to every gram. At 1g per week, the battery setup saves $1,000 or more per year at the low end of disposable pricing.
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Failure modes
Cartridges clog at the mouthpiece. Oil pulls into the airway when the cart sits in a hot car. Batteries die from drops and from oil in the thread. Disposables fail when the battery drains before the oil. The tank still holds oil, and the unit is trash. Auto-draw disposables also fire in a pocket when the pressure sensor sticks.
Safety
CDC linked vitamin E acetate to the 2019 EVALI outbreak. As of February 18, 2020, CDC reported 2,807 hospitalized cases and 68 deaths. Vitamin E acetate showed up in THC cartridges from patient samples. Black market cartridges carry the highest risk. FDA has not approved any cannabis vape product for sale as a drug. Buy from licensed shops that post test results for pesticides, heavy metals, and residual solvents.
Pick by use
- Daily vape, more than 1g per week: 510 battery, variable voltage, 650mAh or higher.
- Weekend vape, 0.5g per month: disposable, 0.5g, rechargeable if offered.
- Live resin or rosin: 510 battery at 2.5V to 3.0V. Low heat keeps terpenes.
- Distillate: 510 battery at 3.6V to 4.2V.
- Flights: federal law bans cannabis on planes. TSA refers cases to local police.