הקדמה
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.
זיכערקייַט אינפֿאָרמאַציע
- Read the user guide completely before operating the charger.
- דו זאלסט נישט פּרווון צו באַשולדיקן ניט-קריקאָנלאָדלעך באַטעריז.
- Ensure correct battery polarity when inserting batteries. Incorrect insertion can cause damage to the charger or battery.
- דו זאלסט נישט ויסשטעלן די טשאַרדזשער צו וואַסער אָדער עקסטרעם טעמפּעראַטורעס.
- האַלטן די טשאַרדזשער אַוועק פון קינדער און פּעץ.
- 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.
פּראָדוקט קאַמפּאָונאַנץ
דער פּעקל כולל:
- 1 x COSOOS MiBOXER C4 Smart Universal 4-Bay Battery Charger
- 1 x Power Cord (AC 90-260V)
- 1 x באַניצער מאַנואַל
Note: Batteries and car charging cable are not included.
סעטאַפּ
- פאַרבינדן מאַכט: 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.
- מאַכט אויף: 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.
אַפּערייטינג ינסטראַקשאַנז
The MiBOXER C4 charger features four independent charging bays, allowing simultaneous charging of different battery types and sizes.
1. ינסערטינג באַטעריז
- 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.
- דרוק די סלאָץ button to select the desired charging bay.
- דרוק די מאָדע 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. פֿאַרשטיין דעם LCD דיספּלעי
The large LCD provides comprehensive information for each charging slot:
- באַטערי טיפּ: Displays the detected or manually selected battery chemistry (e.g., Li-ion 4.2V, Ni-MH).
- Voltage: קראַנט וולtagE פון די באַטאַרייע.
- איצטיקע: Charging current in Ampערעס (א).
- טשאַרדזשינג צייט: Duration of the current charging cycle.
- באַטאַרייע קאַפּאַציטעט: Accumulated mAh charged into the battery.
- אינערלעכער קעגנשטעל: Displays the internal resistance of the battery in mΩ.
- באַטערי פּערסיזtage: Estimated charge level.
- Charging Symbol: Indicates active charging.

בילד: א דעטאַלירטע 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):
- דרוק די סלאָץ button to select the desired charging bay.
- דריקן און האַלטן די מאָדע button to enter current adjustment mode.
- דרוק די מאָדע button repeatedly to cycle through available current options (e.g., 0.1A, 0.3A, 0.5A, 0.7A, 1.0A, 1.5A).
- מעלדונג די מאָדע קנעפּל צו באַשטעטיקן די סעלעקציע.
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.
- דרוק די סלאָץ button until C4 is selected.
- דריקן און האַלטן די מאָדע 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.
באַטערי קאַמפּאַטאַבילאַטי
The MiBOXER C4 charger is compatible with a wide range of cylindrical rechargeable batteries:
| באַטערי טיפּ | נאָמינאַל חלקtage | קאַמפּאַטאַבאַל סיזעס |
|---|---|---|
| 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) |
| ני-מה / ני-קד | 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.
וישאַלט
- רייניקונג: Disconnect the charger from power before cleaning. Use a soft, dry cloth to wipe the surface. Do not use abrasive cleaners or solvents.
- סטאָרידזש: האַלט דעם טשאַרדזשער אין אַ קיל, טרוקן אָרט אַוועק פון דירעקט זונשייַן און נעץ ווען נישט אין באַנוץ.
- דורכקוק: Periodically inspect the power cord and charger for any signs of damage. If damage is found, discontinue use and contact support.
טראָובלעשאָאָטינג
- טשאַרדזשער גייט נישט אן:
- Ensure the power cord is securely connected to both the charger and a working power outlet.
- באַשטעטיקן אַז די מאַכט ווענטיל איז פאַנגקשאַנאַל.
- "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.
- באַטאַרייע ניט טשאַרדזשינג:
- 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 סלאָץ און מאָדע קנעפּלעך.
ספּעסאַפאַקיישאַנז
| שטריך | דעטאַל |
|---|---|
| מאָדעל | מיבאָקסער C4 |
| אַרייַנשרייַב וואָלtage | AC 90-260V, DC 12V 2A |
| רעזולטאַט חלקtage | 4.35 וו / 4.2 וו / 3.6 וו / 1.48 וו |
| מאַקסימום טשאַרדזשינג קראַנט | 1.5 אַ פּער קאַנאַל |
| נומער פון בייס | 4 Independent Bays |
| ווייַז | לקד מיט באַקלייט |
| דימענסיעס (L X W X H) | 6.3 X 4.1 X 1.6 אינטשעס (160 X 104 X 41 מם) |
| וואָג | 13.3 אונסעס (377 גראַמז) |
| מאַטעריאַל | PC Fire-retardant material |
| פּראַטעקשאַנז | Reverse polarity, short circuit, overcharge, damaged battery detection |
וואָראַנטי און שטיצן
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 webפּלאַץ פֿאַר קאָנטאַקט אינפֿאָרמאַציע.
Please have your purchase receipt and product model number (C4) ready when contacting support.