NITECORE UI1 Portable USB Li-ion Battery Charger

  • USB Input with Automatic Adoption for the Optimal Charging Modes
  • Multiple Charging Safeguards
  • Lightweight and Portable for Outdoor Charging
  • Available for Large-Sized 20700, 21700 Batteries and More
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Have questions? 800-531-5369


Max Charging Current of 1000mA available for low current charging below 2.9V for protecting the batteries and maximizing the battery cycle durability 
When a battery with a voltage below 2.9V is inserted, the Ull will automatically access the Low Current Charging Mode with a charging current of 100mA. When a battery with a voltage over 2.9V is inserted, it will access the Standard Mode with a max charging current of 1000mA. 

Powerful Compatibility
Compatible for 3.6V / 3.7V Rechargeable Li-ion Batteries

Intelligent Charging Mode Selection (CC and CV)
Automatic Adoption for the Optimal Charging Modes

Micro-USB Port for Outdoor Charging
Compatible with various mobile power source, solar panel and USB adapters to ensure endless power supply.

Explicit and Simple Power Indicators
For real-time display of battery level and charging status

Over-Discharged Li-ion Battery Activation
The Ul1 is capable of activating over-discharged Li-ion batteries with a protective circuit. After battery installation, Ull will test and activate the battery before charging.

Multiple Charging Safeguards 

Anti-short Circuiting and Reverse Polarity Protection
If the battery is inserted with polar reversed or short-circuited, all 3 indicators will flash to indicate an error.

Intelligent Thermal Protection
When the charger is overheated due to the high temperature of the working environment, the Ul1 will automatically regulate the charging current to protect the charger and the battery.
Automatic Termination Upon Charging Completion 
When the battery is fully charged, all 3 indicators will glow steadily and the Ul1 will automatically cease the charging process.

Constructed from Durable and Fire-Retardant PC Materials
Fearless of the complex outdoor environments.

Multiple Global Certifications Approved
  • CE
  • RoHS
  • FCC
  • Input: DC 5V/lA 5W 
  • Output: 4.2V+1% 1000mA (MAX) 
Compatible with 
  • Li-ion/IMR: 10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14430, 14500, 14650, 16500, 16340 (RCRI 23), 16650, 17350, 17500, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 22500, 22650, 25500, 26500, 26650
Lightweight and Portable
  • Size: 4.82" x 1.15" x 1.26"
  • Weight: 1.43oz

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