21700 Vape Battery

21700 Vape Battery. Much like an 18650 cell, a “21700 battery” is short-hand for a rechargeable, lithium ion battery that is 21 mm in diameter and 70 mm long.

As more electronic devices are moving to li-ion batteries as a power source. This size cell first became popular in electric cars like Tesla and electric scooters.

Advantages:

The big advantage of a 21700 battery over an 18650 battery is the overall energy capacity possible. Battery capacity, measured in milliamp hours or mAh on an 18650 was limited to about 3600mAh because of the size.

By increasing the overall length and diameter slightly, a 21700 battery is able to reach a maximum capacity of 5000mAh – a 42% increase.

Key takeaways:

  • 21700 battery is short-hand for a rechargeable, lithium ion battery that is 21 mm in diameter and 70 mm long.
  • The big advantage of a 21700 battery over an 18650 battery is the overall energy capacity possible.
  • 21700 batteries are able to reach a maximum capacity of 5000mAh.