The EfestSLIM K4 USB Charger is conveniently portable and user friendly. LED indicators indicate when the changer is in the standby mode; charging; or is fully charged. It charges the batteries automatically within a matter of seconds and is designed with both CC and CV safe battery charger mode. The slots and monitors charge independently. USB-C port reduces the heat while charging.
Superior craftsmanship is evidenced by springs made of piano wire; steel cathode with low resistance and hard chromium plating to achieve a more precise charging voltage; and 15,000+ spring testing for quality assurance.