1. Introduction
The POWERKAN K49 is a compact and intelligent battery charger designed for 1.2V Ni-MH AA/AAA batteries and 9V Ni-MH/8.4V Li-ion batteries. It features two sets of intelligent fast charging channels with a Type-C USB interface, automatic power-off protection, and trickle charging mode to ensure batteries are fully charged and ready for use. This manual provides essential information for the safe and efficient use of your POWERKAN K49 charger.
Video: POWERKAN K49 Product Display and Features Overview
2. Important Safety Warnings
- Fire Risk: Please mind potential fire risk and strictly follow the instruction manual for charging and storage.
- Voltage Limit: Do not supply the charger above 5.5V, as this may cause damage to the internal components.
- Battery Compatibility: The charger is designed exclusively for Ni-MH rechargeable batteries (1.2V AA/AAA, 9V) and 8.4V Li-ion batteries. Charging other types of batteries can result in rupture or leakage, leading to explosive batteries, personal injury, or property damage.
- Physical Damage: Do not use the charger if it has been damaged by dropping or any other impact.
- Disassembly: Do not attempt to disassemble or modify the charger yourself. This will void the warranty and could lead to electric shock or fire.
3. Package Contents
Please check the package for the following items:
- 1 x POWERKAN K49 Battery Charger
- 1 x USB Type-C Cable
- 1 x User Manual
4. Specifications
| Feature | Specification |
|---|---|
| Model | POWERKAN K49 |
| Input | DC 5V 1-2A USB Type-C |
| Supported Battery Models | 1.2V Ni-MH: AA/AAA, 9V Ni-MH/8.4V Li-ion |
| Charging Cut-off Voltage (1.2V Ni-MH) | 2.84±0.1V |
| Charging Cut-off Voltage (9V Ni-MH/8.4V Li-ion) | 10.2V±0.5V (subject to battery's own protection plate) |
| Charging Current (AA/AAA) | 0.45A×2 |
| Charging Current (9V) | 0.09A×2 |
| No-load Voltage (AA/AAA) | 5V |
| No-load Voltage (9V) | 12V |
| Safety Protection Time | 8 Hours |
| Display | LED indicator light (flashing green for charging, solid green for full charge; 8.4V Li-ion may turn off) |
| Charger Size | 75mm × 66mm × 26mm (2.95in × 2.6in × 1.02in) |
| Output Power | ≤37.5W |
| Output Current | 2A |
| Intelligent Charge | Yes |
| Quick Charge | Yes |
| Certifications | CE, FCC, RoHS, UL, WEEE |
Image: Charger dimensions with batteries
5. Setup
- Unpack: Carefully remove the POWERKAN K49 charger and USB Type-C cable from its packaging.
- Connect Power: Connect the provided USB Type-C cable to the charger's input port. Plug the other end of the USB cable into a compatible USB power adapter (DC 5V 1-2A, not included) or a USB port on a computer.
- Power On: The charger is ready for use once connected to a power source.
6. Operating Instructions
6.1. Inserting Batteries
The POWERKAN K49 charger supports 1.2V Ni-MH AA/AAA batteries and 9V Ni-MH/8.4V Li-ion batteries. It features smart identification to automatically detect the battery type and select the appropriate charging mode for optimal performance.
- For AA/AAA Batteries: Insert 2 or 4 AA/AAA Ni-MH rechargeable batteries into the designated slots, ensuring correct polarity (+/-).
- For 9V Batteries: Insert 1 or 2 9V Ni-MH/8.4V Li-ion rechargeable batteries into the designated slots, ensuring correct polarity (+/-).
Image: POWERKAN K49 charger with USB and Type-C cables, showing supported battery models
Image: Microcomputer Management System Smart Charger with AA/AAA batteries
6.2. Charging Process and LED Indicators
The charger features a smart LED indicator system to clearly display the charging status of each battery.
- Charging: When a battery is correctly inserted and charging, the corresponding green LED indicator light will flash.
- Fully Charged: Once the battery is fully charged, the green LED indicator light will become solid (always bright). Note: For 8.4V Li-ion batteries, the indicator may turn off when fully charged.
- Trickle Charging: The charger utilizes a trickle charging mode to maintain the battery's full charge, ensuring it's always ready for use without overcharging.
Image: Smart LED Indicator showing charging status
6.3. Correct and Incorrect Charging Use
It is crucial to insert batteries correctly for safe and efficient charging. Refer to the diagrams below:
Image: Diagrams illustrating correct and incorrect battery charging methods
Important Notes from Diagram:
- LED light charging turn state, full charge always green light, charging flashing green light.
- Each charging bin corresponds to a green indicator light, charging is the indicator light flashing, full electricity is always bright.
- 1.2V Ni-MH is not available for single battery charging, only using 1, 2, 3 or 4 charging positions at the same time.
6.4. Multiple Protection Features
The POWERKAN K49 charger is equipped with a built-in power protection system to ensure safety during charging:
- Over Charge Protection
- Over Current Protection
- Over Voltage Protection
- Over Heat Protection
- Short-Circuit Protection
Image: Multiple Protection features of the POWERKAN K49 charger
7. Maintenance
The POWERKAN K49 charger does not require special maintenance. Simply wipe it clean regularly with a soft, dry cloth to remove dust or debris. Ensure the charger is disconnected from the power source before cleaning.
8. Troubleshooting
Common Issues and Solutions:
- Charger not working / No LED indication:
- Ensure the USB Type-C cable is securely connected to both the charger and the power source.
- Verify that the power adapter or USB port is functioning correctly and provides DC 5V 1-2A.
- Check if the charger or cable has any visible damage. If so, discontinue use.
- Batteries not charging:
- Ensure batteries are inserted with correct polarity (+/-).
- Confirm that the batteries are compatible Ni-MH (1.2V AA/AAA, 9V) or 8.4V Li-ion types.
- For 1.2V Ni-MH batteries, ensure you are charging at least two batteries simultaneously (in positions 1&2 or 3&4, or all four). Single 1.2V Ni-MH battery charging is not supported.
- Check if the batteries are severely depleted or damaged. Try charging a different set of known good batteries.
- LED indicator behavior:
- Flashing green light indicates the battery is currently charging.
- Solid green light indicates the battery is fully charged.
- For 8.4V Li-ion batteries, the LED indicator may turn off when fully charged.
9. User Tips
- Monitor LED Indicators: Pay close attention to the LED lights. A flashing green light means charging is in progress, and a solid green light (or off for some Li-ion) means charging is complete. This is the primary way to know your battery status.
- Group Charging for Ni-MH: Remember that 1.2V Ni-MH batteries must be charged in pairs (slots 1&2 or 3&4) or all four slots simultaneously. Do not attempt to charge a single 1.2V Ni-MH battery.
- Use a Quality Power Adapter: To ensure optimal charging speed and safety, use a reliable 5V 2A USB power adapter.
10. Warranty and Support
For warranty information, technical support, or any questions regarding your POWERKAN K49 charger, please contact the seller or refer to the product listing on the platform where you made your purchase. Keep your purchase receipt as proof of purchase.
User Manual (PDF): A detailed user manual in PDF format is available for download. Please refer to the product page or contact customer support for the link: Download User Manual (PDF)