Nitecore SC4 4-Slot Fast Universal Charger is capable of up to a blazing fast 3A speed in one slot and a total charging output of 6A. This 4-slot universal charger handles most IMR/Li-ion and NiMH battery types including 18650, 16340, 14500, 26650 and more. Equipped with a USB output as well, the SC4 can be used to charge external devices such as laptops and cell phones. It is as easy as inserting your batteries into the charger - the SC4 does the rest. Both the charging current and voltage can also be adjusted for specialized batteries. A brightly lit LCD screen displays charging status and battery health while built-in overcharging, overheating and short circuit protections keep you and your batteries safe.