1. Introduction
The POWERKAN ALL4 is a versatile 4-slot smart battery charger designed for various rechargeable battery types. It features independent charging slots, automatic battery detection, fast charging capabilities, and a clear LCD screen to monitor the charging process. This manual provides essential information for the safe and efficient use of your charger.

Figure 1: POWERKAN ALL4 Smart Charger with USB Type-C cable and supported battery types.
2. Key Features
- Independent 4-Slot Charging: Each slot can charge 1.2V Ni-MH/Ni-CD AA/AAA rechargeable batteries and 1.5V/3.7V Lithium-ion AA/AAA rechargeable batteries independently. Different battery types can be charged simultaneously.
- Automatic Battery Detection: Automatically identifies 1.2V Ni-MH/Ni-CD and 1.5V/3.7V Lithium-ion batteries and adjusts charging parameters accordingly.
- Fast Charging: Supports DC 5V 2A fast charging input via Type-C port.
- LCD Display: A clear LCD screen shows the real-time charging process and battery status for each slot.
- Multiple Protection System: Built-in safeguards against over-charge, over-current, over-voltage, over-heat, and short-circuit conditions.

Figure 2: Multiple Protection System ensures safe charging.
3. Specifications
3.1 Electrical Specifications
| Parameter | Value |
|---|---|
| Input | Type-C / DC 5V 2A |
| Output (1.2V Ni-MH/Ni-CD) | 350mA x 4 |
| Output (1.5V Li-ion) | 250mA x 4 |
| Compatible Battery Types | 1.2V Ni-MH/Ni-CD AA/AAA, 1.5V Lithium-ion AA/AAA |
| Working Environment | 0°C - 45°C |
3.2 General Properties
| Property | Value |
|---|---|
| Brand Name | PowerKAN |
| Data Transmission | Type-C |
| Display Screen | Yes |
| Intelligent Charge | Yes |
| Quick Charge | Yes |
| Type | USB |
| Origin | Mainland China |
| Certification | CE, FCC, RoHS, UL, WEEE |
3.3 Dimensions
| Dimension | Value |
|---|---|
| Width | 6.2 cm / 2.44 in |
| Height | 9.1 cm / 3.58 in |
| Depth | 3 cm / 1.18 in |

Figure 3: Product dimensions of the POWERKAN ALL4 charger.
4. Package Contents
The POWERKAN ALL4 (N6) Battery Charger package includes:
- 1 x POWERKAN N6 Battery Charger
- 1 x USB Type-C Cable
- 1 x User Manual

Figure 4: White charger and accessories.

Figure 5: Black charger and accessories.
5. Setup Instructions
5.1 Connecting the Power
- Connect the provided USB Type-C cable to the Type-C input port on the back of the charger.
- Connect the other end of the USB cable to a compatible 5V 2A USB power source. This can be a power bank, computer USB port, wall charger, or power strip with a USB output.
- The charger's LCD screen will illuminate, indicating it is powered on and ready for use.

Figure 6: Charger compatibility with various USB power sources.
5.2 Charger Overview

Figure 7: Detailed views of the charger (Front, Side, Bottom, Back).
6. Operating Instructions
6.1 Inserting Batteries
- Ensure the charger is connected to a power source.
- Insert one or more compatible AA or AAA rechargeable batteries into any of the four charging slots (CH1, CH2, CH3, CH4). Ensure correct polarity (+/-) as indicated on the charger.
- The charger will automatically detect the battery type (1.2V Ni-MH/Ni-CD or 1.5V/3.7V Li-ion) and begin charging.
6.2 Monitoring Charging Process
The LCD screen provides real-time information for each independent charging slot:
- Battery Level Indicator: Shows the current charge status of each battery.
- Battery Type: Displays the detected battery voltage (e.g., 1.2V Ni-MH/Ni-CD, 1.5V/3.7V Li-ion).
- Charging Status: Indicates when charging is in progress and when it is complete.

Figure 8: Independent charging slots and LCD display in action.
6.3 Completing Charge
Once a battery is fully charged, the charger will automatically stop charging that specific slot to prevent overcharging. The LCD display will indicate a full charge. You can then remove the charged battery.
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: Store the charger in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Avoid Moisture: Keep the charger away from water and high humidity.
- Handle with Care: Avoid dropping or subjecting the charger to strong impacts.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger not powering on | No power connection or faulty cable/adapter. | Ensure the USB Type-C cable is securely connected to both the charger and a working 5V 2A power source. Try a different cable or adapter. |
| Battery not charging | Incorrect battery insertion, non-rechargeable battery, or faulty battery. | Check battery polarity. Ensure the battery is a compatible rechargeable type (Ni-MH/Ni-CD or Li-ion). Try a different battery. |
| LCD display not showing information | No battery inserted or charger not powered. | Insert a compatible battery. Ensure the charger is powered on. |
| Overheat warning | Poor ventilation or ambient temperature too high. | Ensure the charger is in a well-ventilated area. Do not cover the charger during operation. Allow it to cool down. |
9. User Tips & FAQ
- Alkaline Batteries: This charger is designed ONLY for rechargeable batteries (Ni-MH/Ni-CD, Li-ion). Do NOT attempt to charge alkaline batteries, as they are not rechargeable and doing so can be dangerous.
- LCD Display: The charger's LCD display is illuminated, making it easy to read the charging status and battery information even in low light conditions.
- Battery Compatibility: The charger supports AA and AAA size rechargeable batteries. It is not designed for larger battery types like 18650, even if they are 3.7V Li-ion. Always ensure the physical size and voltage match the charger's specifications for AA/AAA.
- Power Source: For optimal performance and fast charging, use a 5V 2A power adapter. Lower amperage adapters may result in slower charging times.
10. Warranty and Support
Your POWERKAN ALL4 battery charger is covered by a manufacturer's warranty against defects in materials and workmanship. For specific warranty terms, technical support, or service inquiries, please refer to the contact information provided with your purchase or visit the official PowerKAN website.
Please retain your proof of purchase for warranty claims.