New NITECORE UM20 USB universal smart battery Charger with Eleccessory(TM) microfiber cleaning cloth USB powered Li-ion battery charger, High definition LCD display 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, Designed for optimal heat dissipation Features optimized charging program for IMR batteries, Intelligently select charging current based on battery capacity Features rear USB cable winder, Constructed from fire retardant materials, Features reverse polarity protection