HeroNeo&reg; Universal i4 Intelligent Li-ion/NiMH 18650/26650/AA Battery Charger 4 Output The charges comes equipped with an advanced safety functions including Lithium battery, power battery ,alkaline batteries Manual Select, automatic charge off and built-in temperature controls Capable of charging 1, 2,3, or 4 batteries at a time Totally automatic selectable refresh (condition) function,Fully capable of charging all capacities of all rechargeable batteries Worldwide voltage capable - 100V ~ 240V AC 50~60 hZ Automatic analyzes each battery - to determine battery state prior to charging