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Nitecore Ci2

Nitecore Ci2 Dual Slot universal USB-C battery charger

120g: The Nitecore Ci2 is a dual-slot smart charger that is compatible with Li-ion and Ni-MH/Ni-Cd batteries. It automatically detects the battery's power level and capacity, determining the appropriate charging mode with the correct voltage and current. With independent control of each slot, you can mix and match batteries, reducing wait time on standby. The charger's reliability is backed by a range of safety features, including protection against over-discharge, reverse polarity, and short-circuits.


  • Intelligent USB-C Dual-Slot Superb Charger.
  • OC and PD input available.
  • Capable of charging 2 batteries simultaneously and controlling each slot independently.
  • Up to 3,000mA 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).
  • Automatic detection of large/small capacity batteries and automatic selection of appropriate charging current.
  • Automatic termination upon charging completion.
  • Reverse polarity protection and short circuit protection.
  • Over-discharged battery activation.
  • Overtime charging protection.
  • Made from durable and fire-retardant PC materials.
  • Optimal heat dissipation design.
  • Certified by RoHS, CE, FCC and CEC.
  • Package Includes:
    • 1 x Nitecore Ci2 Charger
    • 1 x USB-C Cable


  • Brand: NiteCore
  • Product Code: Ci2
  • 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
  • Standard Mode: 2,000mA*1 MAX / 1,000mA*2 MAX
  • Dimensions: 148mm x 65mm x 37mm (5.83" x 2.56" x 1.46")
  • Weight: 120.4g 
  • Compatible with:
    • 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
    • Ni-MH/Ni-Cd: AA, AAA, AAAA, C, D
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Customer Questions
Can this device be connected to a 12v usb input I.e Car or Caravan type A USB adapter?
The Nitecore Ci2 and Ci4 chargers comes with a USB-A to USB-C cable so they can be plugged into any standard USB-A power source that can provide enough power.  It supports Input: 5V-2A / 9V-2A / 12V-1.5A 18W (MAX). We would suggest 5V-2A as a ...
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