1. Introduction
The Nitecore Ci4 is an intelligent USB-C four-slot rapid charger designed for a wide range of rechargeable batteries. It features QC/PD input for fast charging and can deliver a maximum single-slot output of 3000mA. The Ci4 is compatible with various Li-ion and Ni-MH/Ni-Cd battery types, offering smart charging modes and multiple protection features to ensure safe and efficient battery management.
2. Package Contents
- NITECORE Ci4 Charger
- Nitecore Keychain (Note: Keychain is an accessory, not part of the core charger functionality.)
3. Key Features
- Intelligent USB-C four-slot rapid charger with QC/PD input.
- Maximum single-slot output of 3000mA.
- Compatible with Li-ion and Ni-MH/Ni-Cd batteries.
- Automatic selection of 3 charging modes (CC, CV, and -dV/dt) based on battery type and capacity.
- Capable of activating over-discharged Li-ion batteries with a protective circuit.
- Optimized IMR battery charging program for extended battery lifespan.
- Dual external protection with unique cooling fins design for rapid heat dissipation.
- Multiple internal protections: Overtime Charging Protection, Anti-short Circuiting and Reverse Polarity Protection, Intelligent Temperature Regulation.
4. Specifications
| Model | Ci4 |
| Input | USB-C (QC/PD compatible) |
| Output Voltage | 5V (DC) |
| Max Single Slot Output | 3000mA |
| Compatible Battery Types | 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 |
| Number of Slots | 4 |
| Product Dimensions | 3.68 x 10.49 x 14.81 cm |
| Weight | 281 grams |
| Certifications | CE, FCC, UL |
5. Setup
- Unpack the Charger: Carefully remove the Nitecore Ci4 charger and any accessories from its packaging.
- Connect Power: Connect the USB-C charging cable (not included) to the USB-C input port on the charger. Connect the other end of the cable to a compatible USB power adapter (QC/PD compatible recommended for optimal performance). The charger will power on.
- Initial Check: Observe the indicator lights. They should briefly illuminate upon power-on, indicating the charger is ready for use.
6. Operating Instructions
- Insert Batteries: Insert one or more compatible rechargeable batteries into the charging slots. Ensure correct polarity (+ and -) as indicated on the charger and battery. The charger will automatically detect the battery type and capacity.
- Automatic Charging Mode Selection: The Ci4 will automatically select the appropriate charging mode (CC, CV, or -dV/dt) based on the detected battery type (Li-ion, Ni-MH, Ni-Cd).
- Charging Process: The indicator lights above each slot will show the charging status.
- Red Indicator Constant-on: Indicates Fast Charge Mode.
- Green Indicators:
- 3 Green Indicators Constant-on: 100% charged.
- 2 Green Indicators Constant-on: Approximately 80% charged.
- 1 Green Indicator Constant-on: Approximately 30% charged.
- Over-Discharged Li-ion Battery Activation: If an over-discharged Li-ion battery with a protective circuit is inserted, the Ci4 is capable of attempting to activate it.
- Charging Completion: The charger will automatically terminate charging once the batteries are fully charged. Remove the batteries from the slots.
7. Maintenance
- Cleaning: Disconnect the charger from the power source before cleaning. Use a soft, dry cloth to wipe the surface of the charger. Do not use abrasive cleaners or solvents.
- Storage: When not in use, store the charger in a cool, dry place away from direct sunlight and extreme temperatures.
- Inspection: Periodically inspect the charger and its USB-C port for any signs of damage or wear.
8. Safety Precautions
- Use the charger only with compatible battery types as listed in the specifications.
- Do not attempt to charge non-rechargeable batteries.
- Ensure correct battery polarity when inserting batteries.
- Do not expose the charger to water, high humidity, or extreme temperatures.
- Do not disassemble or modify the charger.
- Keep out of reach of children.
- Unplug the charger from the power source when not in use or during thunderstorms.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger does not power on. | No power supply, faulty cable, or faulty adapter. | Ensure the USB-C cable is securely connected. Try a different USB-C cable or power adapter. Verify the power source is active. |
| Battery not charging. | Incorrect battery insertion, incompatible battery, or deeply discharged battery. | Check battery polarity. Ensure the battery type is compatible with the Ci4. For deeply discharged Li-ion batteries, the charger will attempt activation; if unsuccessful, the battery may be faulty. |
| Charger or battery becomes excessively hot. | Poor ventilation, faulty battery, or environmental factors. | Ensure adequate ventilation around the charger. Remove the battery immediately. Do not use a battery that overheats. Contact support if the charger itself overheats without a battery. |
| Indicator lights behave unexpectedly. | Internal error or battery issue. | Remove all batteries and unplug the charger. Plug it back in and reinsert batteries. If the issue persists, contact customer support. |
10. Warranty and Support
For warranty information and customer support, please refer to the official Nitecore website or contact your local distributor. Keep your purchase receipt as proof of purchase for warranty claims.
Manufacturer: SYSMAX Innovations Co., Ltd.
Brand: Nitecore
Website: www.nitecore.com
