Nitecore Intelligent USB Lithium-ion Battery Charger Dual-Slot 18650 18350 20700 21700 Black 6952506492923. Its power indicator provides users with real-time battery level and charging status. It also provides multiple charging safeguards to prevent from reverse polarity overcharge and overheating. The UI2 features a micro-USB port compatible with various power sources like power banks solar panels and USB adapters for quick and efficient charging. Weighing less than 2.8 ounces the lightweight design of the UI2 allows you to carry this charger everywhere you go. Measuring 4.94 inches the UI2 fits comfortably in the palm of your hand and is portable for outdoor applications. Specifications for Nitecore Intelligent USB Lithium-ion Battery Charger: Manufacturer: Nitecore Color: Black Battery Type: Lithium Ion Depth/Thickness: 1.26 in Condition: New Voltage: 5 volts Charger Type: DC Features of Nitecore Intelligent USB Lithium-ion Battery Charger Max charging current of 800mA Intelligent charging mode selection (CC and CV) Lightweight and portable for outdoor charging Charges large-sized batteries like 20700 21700 batteries and more Micro-USB port is compatible with USB adapters solar panels power banks and more Displays real-time battery level and charging status Package Contents: Nitecore Intelligent USB Lithium-ion Battery Charger NITECORE UI2 charger Nitecore 6952506492923: Intelligent USB Lithium-ion Battery Charger UI2 Dual-Slot 18650 18350 20700 21700 Black