1. Introduction
This user manual provides essential information for the safe and efficient operation of your SLuB 12000mAh Portable Charger. Please read this manual thoroughly before using the product and retain it for future reference.
The SLuB Portable Charger is a compact and powerful 12000mAh power bank designed to provide reliable charging for a wide range of mobile devices, including iPhones, Samsung phones, Huawei devices, and iPads. It features fast charging capabilities, multiple output ports, and a clear LED digital display for battery status. Its slim and lightweight design makes it an ideal companion for travel, work, and outdoor activities.

Figure 1.1: The SLuB 12000mAh Portable Charger.
2. Product Features
- 3A USB-C High-Speed Output/Input: Equipped with a 15W fast charging USB-C port (5V/3A) that functions for both output and input.
- Multiple Charging Ports: Includes one USB-A output port (5V/2A) and one Micro USB input port (5V/2A), allowing simultaneous charging of two devices.
- High Capacity & Portability: A 12000mAh battery capacity provides multiple charges for mobile phones and devices. Its thin and light design ensures easy portability for various uses, including work, business trips, travel, and camping.
- LCD Power Display: Features a clear digital display showing remaining power in 25%, 50%, 75%, and 100% increments for quick battery status checks.
- Advanced Safety Protection: Built-in smart chip offers comprehensive safety protections, including safeguards against over-voltage, over-current, over-charging, short circuits, and temperature fluctuations. The device is CE and UL certified and compliant with aviation flight standards for safe travel.
- Wide Compatibility: Universally compatible with a broad range of devices such as iPhone, Samsung, Huawei, and iPad.
3. Package Contents
Upon opening the package, please verify that all items listed below are present and in good condition:
- 1 x SLuB 12000mAh Portable Charger
- 1 x USB-C Cable
- 1 x User Manual (this document)
- 1 x Customer & Warranty Service Card
4. Setup
Before first use, it is recommended to fully charge your SLuB Portable Charger.
- Connect the provided USB-C cable to the USB-C input/output port on the power bank.
- Connect the other end of the USB-C cable to a compatible USB wall adapter (not included) or a computer's USB port.
- The LED digital display will illuminate, showing the charging progress. The power bank is fully charged when the display shows "100".

Figure 4.1: Charging the SLuB Portable Charger.
5. Operating Instructions
5.1 Charging Your Devices
The SLuB Portable Charger can charge up to two devices simultaneously.
- Connect your device's charging cable to either the USB-A output port or the USB-C output/input port on the power bank.
- Connect the other end of the cable to your device.
- The power bank will automatically begin charging your device. The LED display will show the remaining battery percentage.

Figure 5.1: Charging two devices simultaneously.

Figure 5.2: Close-up of the power bank charging a device.
5.2 Checking Battery Level
The integrated LCD digital display provides a clear indication of the power bank's remaining battery charge.
- The display shows percentages: 25%, 50%, 75%, and 100%.
- When charging or discharging, the relevant percentage will illuminate.

Figure 5.3: LCD Power Display indicating remaining charge.
6. Maintenance
- Keep the power bank dry and away from moisture.
- Avoid extreme temperatures (hot or cold).
- Do not drop, disassemble, or attempt to repair the device yourself.
- Clean the surface with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
- Store in a cool, dry place when not in use for extended periods.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Power bank not charging | Cable not connected properly; faulty cable/adapter; power bank fully charged. | Ensure all connections are secure. Try a different cable or wall adapter. Check the LCD display for "100%". |
| Device not charging from power bank | Power bank battery low; device cable not connected properly; device not compatible. | Recharge the power bank. Ensure the device's charging cable is securely connected to both the power bank and the device. Verify device compatibility. |
| Slow charging | Using a non-fast charging port/cable; device drawing high power; multiple devices charging. | Ensure you are using the USB-C port for fast charging. Use a high-quality, fast-charging compatible cable. Charging multiple devices simultaneously may reduce individual charging speed. |
| LCD display not working | Power bank is off; internal issue. | Press the power button to activate the display. If the issue persists, contact customer support. |
8. Specifications
| Specification | Detail |
|---|---|
| Model Number | J33 |
| Battery Capacity | 12000 Milliamp Hours (mAh) |
| USB-C Output/Input | 5V/3A (15W) |
| USB-A Output | 5V/2A |
| Micro USB Input | 5V/2A |
| Product Dimensions | 6 x 4 x 0.7 inches |
| Item Weight | 7.1 ounces |
| Special Features | Digital Display, Fast Charging, Slim Design |
| Certifications | CE, UL Certified, Aviation Flight Standards Compliant |
9. Safety Information
Your SLuB Portable Charger is designed with multiple safety features to ensure reliable and secure operation. Please adhere to the following guidelines:
- Do not expose the power bank to water, fire, or extreme temperatures.
- Avoid dropping or subjecting the device to strong impacts.
- Do not attempt to disassemble, repair, or modify the power bank. This will void the warranty and may cause safety hazards.
- Keep out of reach of children.
- Use only compatible charging cables and adapters.
- The built-in smart chip provides protection against:
- Over-voltage
- Over-current
- Over-battery discharge
- Over-charging
- Short circuit
- Over-temperature
- This device is compliant with aviation flight standards and can be carried on planes.

Figure 9.1: Aviation Compliance for safe travel.

Figure 9.2: Internal safety protection features.
10. Product Overview Video
Watch this official video for a visual overview of the SLuB Portable Charger's features and functionality.
Video 10.1: SLuB USB C Portable Charger overview. This video demonstrates the product's design, ports, LED display, and charging capabilities.
11. Warranty and Support
Your SLuB Portable Charger comes with a customer and warranty service. For any questions, technical support, or warranty claims, please refer to the Customer & Warranty Service Card included in your package or contact SLuB customer support directly.
Please retain your purchase receipt as proof of purchase for warranty purposes.




