Vapcell is more known for their batteries, but this new battery charger is quite simple, and super affordable. For one, it's a 2 bay charger, which means you can charge up to 2 batteries at the same time.
What's great about it is that it can charge a wide range of sizes, including the most popular 18650 batteries, and the newly popularized 21700 and 20700 battery sizes.
