Longest-lasting means most e-liquid
Puff counts are lab estimates that change with power mode, so they can't rank real-world life across brands. E-liquid capacity is a fixed physical quantity — 18mL is 18mL in any mode — which makes it the only figure that reliably predicts which device you'll be refilling or replacing sooner.
By that measure the top of our shelf is a three-way tie at 18mL, and the device advertising the largest puff number isn't in it.
The 18mL tier
Three devices share the most e-liquid we stock. The Off-Stamp Classic Cube pod and the Off-Stamp X-Cube Kit both hold 18mL and are two ends of one system — a pod you can run on its own or on the X-Cube battery. The Geek Bar Pulse X holds the same 18mL in a sealed device with a 3D curved status display and an 820mAh USB-C battery.
For raw longevity between refills or recharges, these are the picks. If you also want to stop re-buying batteries, the X-Cube Kit is the one that keeps the battery and replaces only the pod.
16mL and 12mL
Just behind sits the Geek Bar Pulse 2 at 16mL, with the same status display as the Pulse X. Then the RAZ TN9000 at 12mL — a sealed disposable with a 0.96" HD display and adjustable airflow. On liquid it is smaller than the 18mL tier, which is the ranking this page is actually making.
None of that makes the TN9000 a poor device. It just isn't the longest-lasting one, and the puff number on its front is not how this shelf sorts.
| Device | E-liquid | Advertised puffs |
|---|---|---|
| Off-Stamp Classic Cube pod | 18mL | Up to 25,000 |
| Off-Stamp X-Cube Kit | 18mL | Up to 25,000 |
| Geek Bar Pulse X | 18mL | Up to 25,000 / 15,000 Pulse |
| Geek Bar Pulse 2 | 16mL | Up to 25,000 / 15,000 Pulse |
| RAZ TN9000 | 12mL | Up to 9,000 |
The battery caveat
Lasting long between refills means recharging along the way. Every device at this size holds more liquid than one charge can vaporise, so they all take USB-C and expect several recharges before the liquid is gone. Running flat with liquid left isn't a fault — it's the norm for a large device, and a status display (Pulse X, Pulse 2) is what tells you which of the two you're actually out of.
Common questions
Which disposable vape lasts the longest?
The ones with the most e-liquid — the 18mL devices: the Off-Stamp Classic Cube pod, the Off-Stamp X-Cube Kit, and the Geek Bar Pulse X. Capacity predicts life far better than the puff count, which changes with power mode.
Doesn't the 50,000-puff device last longest?
No. The Geek Bar Pulse X 2 advertises 50,000 puffs and does not publish an e-liquid capacity, so we do not rank it on millilitres. The devices that do publish capacity put 18mL at the top of this shelf. The puff figure is about draw length in a lab, not how much liquid is inside.
How do I make a disposable last longer?
Vape at the lower power mode where there is one, draw gently, and store it upright and cool. High-power modes roughly halve rated life, and heat and hard draws waste liquid. Capacity sets the ceiling; habits decide how close you get to it.
