Uvod
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.
Varnostne informacije
- Read the user guide completely before operating the charger.
- Ne poskušajte polniti baterij, ki jih ni mogoče polniti.
- Ensure correct battery polarity when inserting batteries. Incorrect insertion can cause damage to the charger or battery.
- Polnilnika ne izpostavljajte vodi ali ekstremnim temperaturam.
- Polnilnik hranite izven dosega otrok in hišnih ljubljenčkov.
- 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.
Sestavine izdelka
Paket vključuje:
- 1 x COSOOS MiBOXER C4 Smart Universal 4-Bay Battery Charger
- 1 x Power Cord (AC 90-260V)
- 1 x uporabniški priročnik
Note: Batteries and car charging cable are not included.
Nastavitev
- Priključite napajanje: 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.
- Vklop: LCD-zaslon se bo zasvetil, kar pomeni, da je polnilnik pripravljen za uporabo.

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.
Navodila za uporabo
The MiBOXER C4 charger features four independent charging bays, allowing simultaneous charging of different battery types and sizes.
1. Vstavljanje baterij
- 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.
- Pritisnite SLOT button to select the desired charging bay.
- Pritisnite NAČIN 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. Razumevanje LCD-zaslona
The large LCD provides comprehensive information for each charging slot:
- Vrsta baterije: Displays the detected or manually selected battery chemistry (e.g., Li-ion 4.2V, Ni-MH).
- voltage: Trenutni zvtage baterije.
- trenutno: Charging current in Amperes (A).
- Čas polnjenja: Duration of the current charging cycle.
- Kapaciteta baterije: Accumulated mAh charged into the battery.
- Notranji upor: Displays the internal resistance of the battery in mΩ.
- Odstotek baterijetage: Estimated charge level.
- Charging Symbol: Označuje aktivno polnjenje.

Slika: Podrobna 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. Prilagajanje polnilnega toka
- The charger can automatically select an optimal charging current.
- To manually adjust the charging current (up to 1.5A max per channel):
- Pritisnite SLOT button to select the desired charging bay.
- Pritisnite in držite NAČIN button to enter current adjustment mode.
- Pritisnite NAČIN button repeatedly to cycle through available current options (e.g., 0.1A, 0.3A, 0.5A, 0.7A, 1.0A, 1.5A).
- Spustite NAČIN gumb za potrditev izbire.
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.
- Pritisnite SLOT button until C4 is selected.
- Pritisnite in držite NAČIN 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.
Združljivost baterij
The MiBOXER C4 charger is compatible with a wide range of cylindrical rechargeable batteries:
| Vrsta baterije | Nominalna zvtage | Združljive velikosti |
|---|---|---|
| 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 | 3.6 V | (Same sizes as Li-ion, manual selection required) |
| Ni-MH / Ni-Cd | 1.48 V | 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.
Vzdrževanje
- Čiščenje: Pred čiščenjem polnilnik izključite iz električnega omrežja. Za brisanje površine uporabite mehko, suho krpo. Ne uporabljajte abrazivnih čistil ali topil.
- Shranjevanje: Polnilnik shranjujte na hladnem in suhem mestu, stran od neposredne sončne svetlobe in vlage, ko ga ne uporabljate.
- Pregled: Periodically inspect the power cord and charger for any signs of damage. If damage is found, discontinue use and contact support.
Odpravljanje težav
- Polnilnik se ne vklopi:
- Ensure the power cord is securely connected to both the charger and a working power outlet.
- Preverite, ali vtičnica deluje.
- "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.
- Baterija se ne polni:
- 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 in NAČIN gumbi.
Specifikacije
| Funkcija | Podrobnost |
|---|---|
| Model | MiBOXER C4 |
| Vhodna voltage | AC 90-260V, DC 12V 2A |
| Izhodna voltage | 4.35V / 4.2V / 3.6V / 1.48V |
| Največji polnilni tok | 1.5 A na kanal |
| Število zalivov | 4 Independent Bays |
| Zaslon | LCD z osvetlitvijo ozadja |
| Dimenzije (D x Š x V) | 6.3 x 4.1 x 1.6 palca (160 x 104 x 41 mm) |
| Teža | 13.3 unče (377 gramov) |
| Material | PC Fire-retardant material |
| Zaščite | Reverse polarity, short circuit, overcharge, damaged battery detection |
Garancija in podpora
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 webspletno mesto za kontaktne podatke.
Please have your purchase receipt and product model number (C4) ready when contacting support.