This listing is for a Nitecore UM2 Charger and 4 x Nitecore NL166 CR123A batteries.

The Nitecore UM2 is Intelligent Dual-Slot USB battery charger. It has integrated LCD displays which shows charging progress, current, voltage information. The charger comes with automatic detection of battery power level and automatic selection of the appropriate voltage and charging mode.

UM2 Features :

• Intelligent USB Dual-Slot Charger
• QC 2.0 Input available
• Capable of charging 2 batteries simultaneously and controlling each slot independently
• Up to 1,500mA charging speed in a single slot
• Compatible with Li-ion and Ni-MH/Ni-CD batteries with automatic detection
• Automatic detection of battery power level and automatic selection of the appropriate voltage and charging mode
• Automatic selection between 3 charging modes (CC, CV, and -dV/dt
• Energy-efficient LCD display for real-time charging information
• Capable of manually selecting the charging cut-off voltage and the charging current
• Automatic detection of large/small capacity batteries and automatic selection of appropriate charging current
• Automatic termination upon charging circuit protection
• Reverse polarity protection and short circuit protection
• Over-discharged battery activation
• Li-ion battery restoration
• Overtime charging protection
• Made from durable and fire-retardant PC materials
• Optimal heat dissipation design
• Certifed by RoHS, CE, FCC, and CEC
• Pacakage Includes
• 1 x USB cable
• 1 x Manual
• 1 x UM2 Charger

UM2 Specifications:

• Input - DC 5V/2A 9V/2A 18W (Max)
• Output - 4.35V±1% / 4.2V±1% / 3.7V±1% / 1.48V±1%
• QC Mode - 1,500mA x 2 (MAX)
• Standard Mode - 1,000mA x 2 (MAX)
• Compatible Batteries:
• IMR/Li-ion/LiFePO4: 10440, 14500, 14650, 16500, 16340 (RCR123), 16650, 17350, 17500, 17670, 17700, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 22650, 25500, 26500, 26650, 26700
• Ni-MH/Ni-Cd: AA, AAA, AAAA, C, D
• Dimensions - 152mm x 73mm x 40mm
• Weight - 148.3g

The Nitecore N166 Li-ion battery is a highly capable specifically for high performance electronics. It is a powerful RCR123A battery which can deliver an impressive 3.7 Volts of power and can hold a charge of up to 650 mAh, making them perfect for high drain devices such as LED flashlights, video game consoles, cameras, appliances, and more.

NL166 Features:

• Built-in high-performance protection circuit prevents overcharging / over-discharging
• Nickel-plated S.S. connectors on both ends for superior impact resistance, electrical conductivity, and oxidation resistance
• Durable metallic film coating protects against abrasions and other external damage
• Pressure relief valve activates in the event of rapid temperature increase

NL166 Specifications:

• Battery Size: RCR123A (16340)
• Battery Chemistry: Lithium Ion (Li-Ion)
• Voltage: 3.7V
• Capacity: 650 mAh
• Max Charging Current: 650mA
• Recommended Charging Current: 300 mA
• Max Discharge Current: 4A
• Estimated Charge Cycles: 500 cycles
• Dimensions:
• Diameter: 16.6mm
• Length: 34.8mm
• Weight: 17.8g

Note: All lithium ion batteries have a risk of fire and/or explosion, handle batteries with care, ensuring not to overcharge or overdischarge, even if the battery contains a protection circuit. If battery is visibly damaged, stop use immediately and dispose of appropriately (Li-ion batteries pose a serious fire risk if thrown into household waste). If a battery is not to be used for over two weeks, store partially charged (30-70%) for maximum capacity retention.