Panasonic Ncr21700t Datasheet Better
The datasheet shows that to get the full , you need to discharge the cell down to 2.5V . Most vape mods or flashlights cut off at 2.8V or 3.0V to protect the device.
For more information on the Panasonic NCR21700T datasheet, please refer to the following resources: panasonic ncr21700t datasheet