EFEST Slim K2 Battery Charger

The EFEST Slim K2 Battery Charger is a portable battery charger designed to charge two lithium-ion batteries simultaneously. It is compatible with a wide range of battery sizes, including 18650, 26650, 20700 and 21700 batteries, which are commonly used in electronic cigarettes, vaporizers, and other devices. 

The EFEST Slim K2 Battery Charger is designed with multiple safety features, including over-discharge protection, over-voltage protection, and short-circuit protection. These safety features help to prevent damage to the battery or the charger and ensure safe and reliable charging.