This all-new highly advanced smart charger automatically selects charging current based on battery capacity, enabling one charger for multiple capacities. USB powered UM 20 is as simple as insert, detect, and charge. Features • USB powered Li-ion battery charger • High definition LCD displays real time charging status • Features USB output charging • Integrated intelligent power management system • Intelligently detects input power • Intelligently distributes charging power • Priority Mode offers either battery or USB charging • Enables data transfer via USB • Features optimized charging program for IMR batteries • Intelligently selects charging current based on battery capacity • Features rear USB cable winder • Constructed from fire retardant materials • Features reverse polarity protection • Designed for optimal heat dissipation • Certified by RoHS, CE, FCC and CEC EdisonBright Battery Box and EdisonBright AA>D Battery converter/spacer included in bundle USB power adapter required (not included)