Every device in our catalog carries a puff rating, and every one of those ratings is simultaneously honest and unattainable. Both facts trace to the same place: the rating is a laboratory convention, and you are not a laboratory. Here is what the number actually measures — and how to use it correctly anyway.
How the rating is made
Manufacturers rate capacity on a standardized machine draw: short, fixed-duration puffs at set intervals until the e-liquid or the cell gives out. The convention descends from cigarette testing methodology, and it produces the number on the box — a real measurement of a real but synthetic usage pattern.
Why your count lands lower
Human draws run longer and harder than the machine’s. A longer draw moves more liquid per puff — simple as that — so a human converting the same tank tends to see roughly 60–75% of the rated number. The gap is not a defect, a scam or a batch problem. It is the difference between a meter and a mouth.
The three correct uses of the number
- Comparison. The machine handicap applies to every device roughly equally, so a 50K rating versus a 20K rating is a fair 2.5:1 capacity comparison even though neither will deliver its face value to you.
- Calendar math. Track one device honestly — how many days did the 12K actually last? — and every other rating becomes a personal conversion: your "days per rated thousand" constant. One data point makes the whole shelf predictable.
- Value math. Price divided by rated puffs remains the fairest cross-device value metric, precisely because the handicap is uniform. Our cost-per-thousand chart is built on exactly this logic.
The one wrong use
Treating the rating as a personal quota — "I must get 30,000 or I was robbed." The rating is a convention for comparing tanks, not a guarantee about your lungs. Buy the class that fits your calendar, judge value on the chart, and let the box number stay where it belongs: on the box.