Charge your batteries with the Efest PRO C2 Charger. The Efest PRO C2 Charger is a simple and cost-efficient charger designed by Efest. The Efest PRO C2 Charger is a two bay charger powered by a AC wall plug and can charge two batteries at 1A each at the same time. The LED indicator light is red when your battery is charging and turns green when the battery is fully charged. The Efest PRO C2 Charger can charge different types of 3.6V/3.7V lithium batteries commonly used in electronic cigarettes, flashlights, electric tools, and more.