Introduction
This manual provides detailed instructions for the safe and efficient operation of your COSOOS MiBOXER C4 Smart Universal 4-Bay Battery Charger. Please read this manual thoroughly before use and retain it for future reference.
Image: The COSOOS MiBOXER C4 Smart Universal 4-Bay Battery Charger, showing its LCD display, four battery slots, and power cables.
Safety Information
- Read the user guide completely before operating the charger.
- Do not attempt to charge non-rechargeable batteries.
- Ensure correct battery polarity when inserting batteries. Incorrect insertion can cause damage to the charger or battery.
- Do not expose the charger to water or extreme temperatures.
- Keep the charger away from children and pets.
- Use only the provided power cord or a compatible DC 12V 2A power source.
- The charger is designed with fire-retardant materials and features excellent heat dissipation.
- If the charger displays an error or a battery appears damaged, discontinue use immediately.
Product Components
The package includes:
- 1 x COSOOS MiBOXER C4 Smart Universal 4-Bay Battery Charger
- 1 x Power Cord (AC 90-260V)
- 1 x User Manual
Note: Batteries and car charging cable are not included.
Setup
- Connect Power: Plug the provided power cord into the AC input port on the back of the charger, then connect it to a standard wall outlet (AC 90-260V). Alternatively, for DC input, connect a compatible DC 12V 2A power source (e.g., car adapter, not included) to the DC input port.
- Power On: The LCD display will illuminate, indicating the charger is ready for use.
Image: Close-up of the MiBOXER C4 charger showing the DC 12V and AC 86-265V input ports, along with a detailed view of the LCD display and internal resistance measurement.
Operating Instructions
The MiBOXER C4 charger features four independent charging bays, allowing simultaneous charging of different battery types and sizes.
1. Inserting Batteries
- Carefully insert one or more rechargeable batteries into the charging slots (C1, C2, C3, C4), ensuring correct polarity (+ and - ends match the markings on the charger).
- The charger's thick negative pole slide track ensures secure contact for various battery sizes.
Image: The MiBOXER C4 charger with various battery types and sizes inserted, demonstrating its wide compatibility.
2. Automatic and Manual Battery Type Detection
- The charger will automatically detect Li-ion (4.2V) and Ni-MH/Ni-Cd (1.48V) battery types.
- For Li-ion (4.35V) and LiFePO4 (3.6V) batteries, you must manually select the battery type.
- Press the SLOT button to select the desired charging bay.
- Press the MODE button to cycle through the battery types (Li-ion 4.35V, LiFePO4 3.6V).
- The selected battery type will be displayed on the LCD.
3. Understanding the LCD Display
The large LCD provides comprehensive information for each charging slot:
- Battery Type: Displays the detected or manually selected battery chemistry (e.g., Li-ion 4.2V, Ni-MH).
- Voltage: Current voltage of the battery.
- Current: Charging current in Amperes (A).
- Charging Time: Duration of the current charging cycle.
- Battery Capacity: Accumulated mAh charged into the battery.
- Internal Resistance: Displays the internal resistance of the battery in mΩ.
- Battery Percentage: Estimated charge level.
- Charging Symbol: Indicates active charging.
Image: A detailed view of the MiBOXER C4's LCD screen, highlighting and labeling each piece of information displayed, such as battery type, percentage, charging time, capacity, internal resistance, and voltage.
4. Adjusting Charging Current
- The charger can automatically select an optimal charging current.
- To manually adjust the charging current (up to 1.5A max per channel):
- Press the SLOT button to select the desired charging bay.
- Press and hold the MODE button to enter current adjustment mode.
- Press the MODE button repeatedly to cycle through available current options (e.g., 0.1A, 0.3A, 0.5A, 0.7A, 1.0A, 1.5A).
- Release the MODE button to confirm the selection.
5. Discharge Function (Slot 4 Only)
The 4th charging bay (C4) has a discharge function to measure the real capacity of a battery.
- Insert the battery into slot C4.
- Press the SLOT button until C4 is selected.
- Press and hold the MODE button to cycle through modes until "DISCHARGE" or a similar indicator appears.
- The charger will discharge the battery and then recharge it, displaying the measured capacity. This process can take several hours.
6. Automatic Charging Completion
The charger will automatically stop charging when batteries are fully charged, preventing overcharging and extending battery life. The display will show "FULL" for the respective slot.
Image: The MiBOXER C4 charger displaying an error for incorrect battery insertion and showing "FULL" when a battery is completely charged.
Battery Compatibility
The MiBOXER C4 charger is compatible with a wide range of cylindrical rechargeable batteries:
| Battery Type | Nominal Voltage | Compatible Sizes |
|---|---|---|
| Li-ion / IMR / INR / ICR | 4.2V / 4.35V | 10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14350, 14430, 14500, 14650, 16500, 16340 (RCR123), 16650, 17350, 17500, 17650, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 26500, 26650 |
| LiFePO4 | 3.6V | (Same sizes as Li-ion, manual selection required) |
| Ni-MH / Ni-Cd | 1.48V | AA, AAA, AAAA, C, SC |
Image: The MiBOXER C4 charger illustrating its full compatibility with various battery types and sizes, including Li-ion, LiFePO4, Ni-MH, and Ni-Cd cells.
Maintenance
- Cleaning: Disconnect the charger from power before cleaning. Use a soft, dry cloth to wipe the surface. Do not use abrasive cleaners or solvents.
- Storage: Store the charger in a cool, dry place away from direct sunlight and moisture when not in use.
- Inspection: Periodically inspect the power cord and charger for any signs of damage. If damage is found, discontinue use and contact support.
Troubleshooting
- Charger Not Powering On:
- Ensure the power cord is securely connected to both the charger and a working power outlet.
- Verify the power outlet is functional.
- "ERR" Displayed:
- This indicates a battery error. Check if the battery is inserted with correct polarity.
- The battery might be short-circuited or damaged. Remove the battery and inspect it.
- If a damaged battery is detected, the charger will stop charging.
- Battery Not Charging:
- Ensure the battery is properly seated in the slot and making good contact.
- Verify the battery type is correctly detected or manually selected, especially for Li-ion 4.35V and LiFePO4.
- The battery might be over-discharged. The charger has a function to activate some over-discharged lithium batteries.
- Difficulty with Button Operations:
- Refer to the "Operating Instructions" section for specific button press sequences (short press, long press) for SLOT and MODE buttons.
Specifications
| Feature | Detail |
|---|---|
| Model | MiBOXER C4 |
| Input Voltage | AC 90-260V, DC 12V 2A |
| Output Voltage | 4.35V / 4.2V / 3.6V / 1.48V |
| Max Charging Current | 1.5A per channel |
| Number of Bays | 4 Independent Bays |
| Display | LCD with backlight |
| Dimensions (L x W x H) | 6.3 x 4.1 x 1.6 inches (160 x 104 x 41 mm) |
| Weight | 13.3 ounces (377 grams) |
| Material | PC Fire-retardant material |
| Protections | Reverse polarity, short circuit, overcharge, damaged battery detection |
Warranty and Support
The COSOOS MiBOXER C4 Smart Universal 4-Bay Battery Charger comes with a 36-month warranty from the date of purchase, covering manufacturing defects.
For technical support, warranty claims, or any questions regarding your product, please contact COSOOS customer service through the retailer where the product was purchased or visit the official COSOOS website for contact information.
Please have your purchase receipt and product model number (C4) ready when contacting support.
