snippet: The UM10 is a USB powered Li-ion battery charger with safe and intelligent charging modes based on battery capacity, which is automatically detected. This Nitecore charger has an LCD display to show a real-time charging status. Features: Intelligent power management system detects input power Priority Mode offers either battery or USB charging Enables data transfer via USB Optimized charging program for IMR batteries Intelligently selects charging current based on battery capacity Rear USB cable winder Reverse Polarity Protection Designed for optimal heat dissipation Certified by RoHS, CE, FCC, and CEC Product Details: Input Voltage: Micro USB DC 5V Output Voltage: 4.2V ?1% / 5V Output Current: 1000mA / 500mA Compatible with: Li-ion / IMR: 18650, 18490, 18350, 17670, 17500, 16340(RCR123), 14500, 10440 Dimensions: 100mm ? 38mm ? 35mm Weight: 57 gram (without batteries or power cord) INFORMATION FROM NITECORE (Page 1)