20700 and 21700 Battery

20700 and 21700 are larger format vape batteries that yield larger milliamps than regular 18650 batteries. Both 20700 and 21700 vape batteries are known to have longer and extended battery life than most battery and can increase the wattage output of certain vape devices. 21700 batteries offer longer life than 18650s and are great for sub-ohm vaping, especially at higher wattages. Ideal for heavy vapers, they handle more power but may drain faster under constant high use. The 21700 is more common than the 20700, though both are interchangeable. 20700s measure 21x70mm with 3000–4000mAh capacity, while 18650s are 18x65mm with 1200–3600mAh.