Nitecore UM20 USB Charger

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
• Intelligently selects charging current based on battery capacity
• Features rear USB cable winder and grooves to accommodate 2.5mm/3.0mm USB cables
• Constructed from fire retardant materials
• Features reverse polarity protection
• Designed for optimal heat dissipation
• Certified by RoHS, CE, FCC and CEC
• Insured worldwide by Ping An Insurance (Group) Company of China, Ltd.

Specifications

• Input voltage: Micro USB DC 5V
• Output voltage: 4.2V ±1% / 5V
• Output current: 1000mA / 500mA
• Input current: ≥500mA
• Compatible with:
• Li-ion / IMR: 18650, 18490, 18350, 17670, 17500, 16340(RCR123), 14500, 10440
• Dimensions: 3.94”×2.20”×1.38” (100mm× 56mm×35mm)
• Weight: 2.72oz (77.2 gram)(without batteries or power cord)

Standard Function

• Connecting: Unwind the USB cable, lift the rear panel and draw out the cable as instructed. Plug one end of the included USB cable to the UM20’s input port and the other end to a power supply (adapter, PC or other standard USB output port). Upon powering up, the UM20’s LCD will display the power level indicator (hollow) and battery percentage (0%).
• Inserting Batteries: Insert batteries as instructed. Incorrectly inserted batteries will prevent the UM20 from functioning.
• Battery Test: After battery installation, the UM20 will run a quick battery test before charging. If a problem is detected (for example the batteries are installed backwards), the UM20 will stop charging and display “EE” on the LCD to notify the user.
• Charging: During the charging process, charging current will adjust automatically based on the detected battery type, power level and internal battery resistance. For example, when charging batteries of smaller capacities such as 14500 and 16340, charging current will automatically be set to 500mA, ensuring safe use and preserving battery longevity.
• Charging Progress: The UM20 will indicate battery status and charging progress. When batteries are fully charged, 5 power level indicator bars and “100%” will illuminate steadily on the LCD display.