We all know charger is able to provide timely and continuous power so as to make your electronic device functional all the time. The Nitecore I2 is a universal smart charger compatible with almost all cylindrical rechargeable batteries. The I2 automatically detects Li-ion， Ni-MH and Ni-Cd batteries， and through manual selection is also capable of charging LiFePO4 batteries. Constructed from fire-retardant materials， this charger ensures excellent durability and security. It is particularly designed into compact size， lightweight for easy operation and carrying. And with USB port， it could transfer data easily! Come on!                                    Features               <br> USB powered Li-ion battery charger<br> Integrated intelligent power management system<br> It enables data to transfer via USB<br> Intelligently select charging current based on battery capacity<br> Constructed from fire retardant materials， durable and safe to use<br> With reverse polarity protection <br>                                                            Specifications            Output Voltage     4.2 V    <br>Input Voltage     4.2 V    <br>Model     I2     <br>Charger for     Li-ion / IMR: 26650， 22650， 18650， 17670， 18490， 17500， 18350， 16340(RCR123)， 14500， 10440 Ni-MH / Ni-Cd: AA， AAA， AAAA， C    <br> Dimensions     (4.72 x 1.97 x 1.37)" / (12 x 5 x 3.5)cm (L x W x H)     <br> Weight     4.09oz / 116g       <br>                                                             Package Includes            1 x Charger<br>1 x Cable Line<br>