1000 Puff

Within a single manufacturer's own range, a device with a higher stated rating usually holds more e-liquid and carries a larger battery, so a rating at this level indicates the smaller hardware in that range. Stated ratings are not comparable between brands, so read the millilitre and mAh figures rather than the rating. Manufacturers state both figures on the box.

There is no single published test standard that every manufacturer applies, so two devices carrying the same number were not necessarily arrived at in the same way. The e-liquid volume in millilitres is the more comparable specification, because a millilitre is a millilitre whoever measured it.

Generally not. Devices at lower puff ratings are typically sealed and supplied without a charging port. Where a port is present, the packaging states it, so read the box rather than infer it from the rating.

The volume is printed on the box in millilitres and it varies between manufacturers, so read it rather than infer it from the puff figure. As a relationship rather than a number: a lower puff rating goes with a smaller stated volume within a single manufacturer's own line, but that relationship does not hold reliably when comparing one brand against another.

It can. A sealed device ends at whichever limit is reached first, and liquid left behind when the battery is exhausted cannot be recovered. Where a device in this band has no charging port, the battery cannot be brought back up, so the unit is finished at that point even if liquid remains.