Battery Charger, QLSC Universal i4 Intelligent Li-ion/NiMH 18650/26650/AA/AAA 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. Worldwide voltage capable - 100V ~ 240V AC 50~60 hZ. Fully capable of Charging all capacities of ALL rechargeable batteries. Will even charge the higher capacities of the future. Automatic analyzes each battery - to determine battery state prior to charging. Automatic detection of defective batteries. Automatic Charge Level Detection - for termination once your rechargeable batteries are fully charged.