18650s are in more and more electronics. This post will tell you everything you need to know about 18650 batteries. An 18650 is a lithium ion rechargeable battery. Their proper name is “18650 cell”. The 18650 cell has voltage of 3.7v and has between 1800mAh and 3500mAh (mili-amp-hours). There are two types; protected and unprotected. We absolutely recommend protected 18650 batteries. The average 18650 battery charge time is about 4 hours. Charge time can vary with amperage and voltage of the charger and the battery type.
How much power does an 18650 have?
A 3.7v a 3400mAh 18650 stores about 2 aH to max of 3.5 aH. It can store about 10 to 13 watt hours. A small air conditioning unit that can cool about 9000 BTU uses about 1100 watts per hour. So it would take more than 110 of the 18650 batteries to run the air conditioner for 1 hour. In comparison you would need three 12v 40 amp car batteries. But 110 18650s is smaller than 3 car batteries.
Where to buy 18650 battery
Buying from a reputable dealer, like the manufacturer’s outlets on Banggood.com is a great way to guarantee you’re getting what you’ve paid for.
To avoid disappointment, always pick a quality charger to charge up the battery. You’ll need to exercise similar care when buying a charger as you would when buying your batteries to avoid fakes.