Nitecore Ci 2 Battery Charger

Discover Fast, Smart Charging with the Nitecore Ci Series

The Nitecore Ci Battery Charger series redefines convenience and performance for rechargeable batteries. Engineered with intelligent USB-C connectivity and QC/PD fast-charge input, both the Ci2 dual-port and Ci4 four-port models deliver up to 3000 mA max output per slot, drastically reducing charge times for your Li-ion, Ni-MH, and Ni-Cd cells. With built-in automatic battery detection and multiple safety protections against overcharge, reverse polarity, and overheating, the Ci series is designed to charge everything from AAA and AA to high-capacity 18650 and 21700 batteries quickly, safely, and efficiently.

Whether you need the compact Ci2 for everyday charging of two batteries or the versatile Ci4 to power up four cells simultaneously, the Nitecore Ci Battery Charger lineup offers flexible solutions for outdoor enthusiasts, photographers, and tech professionals alike. The USB-C powered design means you can charge from wall adapters, power banks, or even solar panels—ideal for home use and on-the-go setups. Shop now and experience intelligent, high-speed charging that keeps your gear ready when you are

Ci Key Features:

• Intelligent USB-C superb charger
• Supports QC and PD fast-charging input
• Up to 3,000mA maximum charging speed in a single slot
• Compatible with Li-ion and Ni-MH/Ni-Cd rechargeable batteries
• Automatic battery power level detection with intelligent voltage and charging mode selection
• Automatic selection between three charging modes: CC, CV, and −dV/dt
• Smart detection of large and small capacity batteries with automatic current adjustment
• Automatic termination once charging is complete
• Reverse polarity protection and short-circuit protection
• Over-discharged battery activation
• Overtime charging protection for enhanced safety
• Constructed from durable, fire-retardant PC materials
• Optimized heat dissipation design for stable performance
• Certified by RoHS, CE, FCC, and CEC standards
• Worldwide insurance coverage by Ping An Insurance (Group) Company of China, Ltd.

Ci4 Specifications:

• 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
• 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
• Dimensions: 148mm x 105mm x 37mm (5.83" x 4.13" x 1.46")
• Weight: 191.4g (6.75 oz) (Charging cable not included)

Ci2 Specifications:

• 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
• 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
• Dimensions: 148mm × 65mm × 37mm (5.83" × 2.56" × 1.46")
• Weight: 120.4g (4.25 oz) (Charging cable not included)