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NITECORE UI2 2 slot USB Battery Charger for 21700, 18650 etc
NITECORE UI2 Dual-Slot Intelligent Portable USB Li-ion Battery Charger for 18650, 18350, 20700, 21700 Batteries

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Price: $12.99

Availability: Usually Ships in 24 Hours
Product Code: CHG-NITE-UI2

Description User Manual


  • Max charging current of 800mA
  • Intelligent charging mode selection (CC and CV)
  • Lightweight and portable for outdoor charging
  • Charges large-sized batteries like 20700, 21700 batteries & more
  • Micro-USB port is compatible with USB adapters, solar panels, power banks, and more
  • Displays real-time battery level and charging status

Included in the Box

  • NITECORE UI2 charger
  • micro USB charging cable

Dual-Slot Lithium Battery Charger

Powerful and compact, the NITECORE UI2 is a dual-slot portable USB Li-ion battery charger capable of reaching a maximum charging current of 800mA and supports 18650, 18350, 20700, 21700 etc many type and size lithium batteries.

Safe and Intelligent Charging

Its power indicator provides users with real-time battery level and charging status. It also provides multiple charging safeguards to prevent from reverse polarity, overcharge, and overheating.

Portable USB Charging

The UI2 features a micro-USB port compatible with various power sources including power banks, solar panels and USB adapters for quick and efficient charging. Weighing 2.8 ounces, the lightweight design of the UI2 allows you to carry this charger everywhere you go. Measuring 4.94 inches, the UI2 fits comfortably in the palm of your hand and is portable for outdoor applications.


Input DC 5V/2A 10W
Output Voltage 4.2V±1%
Output Current 800mA*2 (MAX)
Compatible with Li-ion/IMR: 10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14430, 14500, 14650, 16500, 16340 (RCR123), 16650, 17350, 17500,17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 22500, 22650, 25500, 26500, 26650
Dimensions L-4.94"xW-2.34"xH-1.26"
Weight 2.8oz
Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 2 Write a review.

  0 of 0 people found the following review helpful:
5 of 5 Works Well April 7, 2023
Reviewer: Leighton Daigle from Rancho Santa Margarita, CA United States  
This charger works very well and I like that it works with the different types of Nitecore batteries that I have.

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  0 of 0 people found the following review helpful:
5 of 5 Charges up nicely March 5, 2022
Reviewer: Jason s from manorville, NY United States  
I charge my nitecore batteries with this charger.  The blue lights let me know when the charge js done.

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