<p>Powerful and compact, the Nitecore Ci4 is a four slot portable USB-C universal battery charger that supports both Ni-Mh or Ni-Cd or lithium rechargeable batteries such as AAA, AA, 18650, 21700, 16340, 14500, and more. It has a maximum charging current of 3000mA, which triples the charging speed thanks to the upgrade to USB-C input. Its LED power indicator provides users with real-time battery level and charging status.The Ci4 has a built-in intelligent system that automatically detects and charges up to 4 batteries installed. It also provides multiple charging safeguards to prevent reverse polarity, overcharge, and overheating. The Ci4 features a USB-C port compatible with various power sources for quick and efficient charging. Weighing only 6.75 ounces and measuring 5.83 inches in length, the lightweight design of the Ci4 allows you to carry this charger everywhere you go.</p><ul><li>?4 Slot</li><li>?UNIVERSAL BATTERY CHARGER - The Nitecore Ci4 automatically detects and charges up to 4 Ni-Mh, Ni-cd and lithium batteries such as AAA,AA, 18650, 21700, 16340, 14500 and more.</li><li>?FAST CHARGING - reaches a single slot maximum charging current of 3000mA equipped with a USB-C input that is QC PD compatible.</li><li>?BUILT-IN SAFEGUARDS - Built from durable fire retardant materials the Ci4 provides multiple charging safeguards to prevent reverse polarity, overcharge, and overheating.</li><li>?LIGHTWEIGHT AND COMPACT - Weighing 6.75 ounces and less than 6 inches in length, the lightweight and compact size of the Ci4 allows you to carry it with you on the go.</li><li>?CONTENTS - Nitecore Ci4, USB-C Charging Cable</li></ul>