3.7V 18650 batteries made using Panasonic or Sanyo cells, two of the world’s largest and most highly regarded lithium ion cell manufacturers.
This means you will get greatly improved cycle life (number of recharges) whilst offering superior capacity retention during the whole life of the battery.
Both batteries feature the raised button top contact.
NOTE: due to shipping regulations, these will be sent by road freight.
Protected cells will not fit in most e-cigs.