FOUR BAY USB BATTERY CHARGER
The NITECORE UM4 is a QC input available intelligent USB four-slot charger with a total max output of 3,000 mA and a single slot max output of 1,500 mA and is capable of charging 4 batteries simultaneously and controlling each slot independently. It only takes 2 hours to charge 80% of a 3,500mAh battery.
The LCD screen can display a real-time information of Battery Health by "Good" or "Poor", Internal Resistance, Charging Current, Battery Voltage, Charged Volume and Charging time. It can enable an automatic detection of battery power level and automatic selection of the appropriate voltage and charging mode and automatic selection between 3 charging modes (CC, CV and -dV/dt). The charging parameters can be set manually to meet various charging needs.
The specially designed Micro USB port is compatible with various mobile power source, solar panel and USB adaptors to ensure endless power supply. UM4 incorporates an optimized IMR battery charging program, which is able to monitor the entire charging process, ensuring that the cut-off voltage is always within safe limits to extend the lifespan of the batteries. The UM4 is compatible with 3.6V/3.7V Li-ion rechargeable batteries, 3.8V Li-ion rechargeable batteries, 1.2V Ni-MH/Ni-Cd rechargeable batteries and 3.2V LiFePO4 batteries.
Multiple safeguards ensure the safe charging process, including automatic battery internal resistance detection, anti-short circuiting and reverse polarity protection, overtime charging protection, over-discharged Li-ion battery activation and over-discharged IMR battery restoration. Apart from being constructed from durable and fire retardant PC materials, the built-in temperature regulation system is designed to prevent the overheat and to ensure the stability of the charging process. If there is no action to the buttons or batteries in 3 minutes, the screen will automatically go dim to save energy.
KEY FEATURES
Intelligent USB Four-Slot Charger
Capable of manually selecting the charging cut-off voltage and the charging current
QC 2.0 input available
Capable of charging 4 batteries simultaneously and controlling each slot independently
Automatic detection of large/small capacity batteries and automatic selection of appropriate charging current
Up to 1,500mA charging speed in a single slot
Automatic termination upon charging completion
Compatible with Li-ion and Ni-MH/Ni-Cd batteries with automatic detection
Reverse polarity protection and short circuit protection
Over-discharged battery activation
Automatic detection of battery power level and automatic selection of the appropriate voltage and charging mode (LiFePO4 and 3.8V Ligon batteries excluded)
LHon battery restoration
Overtime charging protection
Automatic detection of battery internal resistance and display of battery health
Automatic selection between 3 charging modes (CC. CV and -dV/dt)
Made from durable and fire-retardant FC materials
Energy-efficient LCD display for real-time charging information
Optimal heat dissipation design
Certified by Rcti-IS. CE, FCC and CEC
Insured worldwide by Ping An Insurance (Group) Company of China. Ltd.
