Superior charging begins with superior equipment and Golisi has mastered this in every way with the Golisi O2 two-bay charger. This practical, sturdy charger is manufactured with the highest quality elements designed for durability and supreme charging functionality. The military grade loading springs have an estimated 100k life cycle and are compatible with various rechargeable Li-ion batteries like 18650, 26650, 20700, 21700, and even AA & AAA.
Not only does this charger have high durability, it's guaranteed fire and flame resistant, making this one of the safest chargers on the market. This device is smart as well, with a built-in microprocessor that immediately identifies battery types and thus assures correct charging voltage. The Golisi O2 also comes with a built-in 2A USB output function which allows you to charge your phone or other devices from the batteries you have in the charger!