Home > Products > Battery Chargers >

Nitecore Ci2 Dual Slot Universal Battery Charger
Nitecore Ci2 Dual Slot Universal Battery Charger

Click image to open expanded view

Price: $19.95

Availability: Usually Ships in 24 Hours
Product Code: CHG-NITE-CI2

Charging Adapter:
No, Thanks! (Default)
Add a Quick Charge 3.0 USB AC Power Adapter [Add $9.99]



  • Dual-Slot charger with USB-C port
  • QC and PD input compatible
  • Simultaneous battery charging
  • 3000mA achieveable using single slot
  • Automatic battery size detection
  • Independent slots with automated charging

Included in the Box

  • Nitecore Ci2 Charger
  • USB-C Cable

Dual-Slot Universal Battery Charger

Powerful and compact, the Nitecore CI2 is a dual-slot universal battery charger that charges Ni-Mh or Ni-cd or lithium batteries such as AAA, AA, 18650, 21700, 16340, 14500, and more. The Ci2 has a built-in intelligent system that automatically detects and charges up to 2 batteries.

Fast and Safe Charging

Ci2 is able to reach a maximum charging current of 3000mA which triples the charging speed thanks to the upgrade to USB-C input.It also provides multiple charging safeguards to prevent reverse polarity, overcharge, and overheating.

Portable USB-C Charging

The Ci2 charger features a USB-C port compatible with various power sources like power banks, solar panels and USB adapters for quick and efficient charging. Weighing only 4.25 ounces and measuring 5.83 inches in length, the lightweight design of the Ci2 allows you to carry this charger everywhere you go.


Input 5V-2A / 9V-2A / 12V-1.5A 18W(MAX)
Output 4.2V±1% / 1.48V±1%
Fast Charge Mode 3,000mA*1 MAX / 1,500mA*2 MAX / 1,000mA*3 Max, 750mA*4 MAX
Standard Mode 2,000mA*1 MAX / 1,000mA*2 MAX / 700mA*3 MAX / 500mA*4 MAX
Dimensions L-5.83"xW-2.56"xH-1.46"
Weight 4.25oz

Compatible Power Sources

IMR/Li-ion 10440, 14500,14650,16500,16340 (RCR123), 16650,17350, 17500, 17650, 17670, 17700, 18350, 18490, 18500, 18650, 18700, 21700, 22500, 22650, 25500, 26500, 26650, 26700 -- Yes
Ni-MH/Ni-Cd AA, AAA, AAAA, C, D -- Yes
Nitecore Ci2 & Ci4
Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 3 Write a review »

  0 of 0 people found the following review helpful:
5 of 5 Simple, Yet Effective Charger October 1, 2022
Reviewer: Machinist71 from Oklahoma  
I purchased this charger for charging the 21700 batteries that I own. Shipping was FAST and I am very pleased with its performance thus far.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 Battery charger September 19, 2022
Reviewer: Tom T from Tamarack, MN United States  
Worked great, just as described in the literature.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 Ci2 August 10, 2022
Reviewer: DOMINGO ESTRADA from Buena Park, CA United States  
It is a good part for my P20iX

Was this review helpful to you?