The Nitecore D2 is a universal smart charger compatible with almost all cylindrical rechargeable batteries. The D2 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. Furthermore， an integrated digital LCD screen clearly displays charging progress， voltage， current and time while an intelligent automatic power-off function terminates current when charging is complete. And with USB port， it could transfer data easily!                                    Features               <br> USB powered Li-ion battery charger<br> High definition LCD displays real time charging status<br> Featured with USB output charging<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     5 V    <br>Model     D2     <br>Power Cable Length     39.37" / 100cm    <br>Charger for     Cylindrical Lithium Battery， NI-MH Battery     <br> Dimensions     (5.71 x 2.95 x 1.77)" / (14.5 x 7.5 x 4.5)cm (L x W x H)     <br> Weight     6oz / 170g       <br>                                                             Package Includes            1 x Charger<br>1 x Cable Line<br>