1. Introduction
Thank you for choosing the Kuulaa KL-YD71 5000mAh Ultra Slim Magnetic Portable Charger. This device is designed to provide convenient and efficient charging for compatible smartphones and other devices. Please read this manual carefully before use to ensure proper operation and to maximize the product's lifespan.
2. Product Overview
The Kuulaa KL-YD71 is an ultra-slim, magnetic portable charger featuring a 5000mAh battery capacity. It supports both wireless magnetic charging and wired USB-C PD 20W fast charging. Its compact design and dual-glass finish offer both portability and durability.
Key Features:
- Ultra-Slim Profile: Measures approximately 0.27 inches (6.9mm) thick, designed for easy portability.
- Magnetic Attachment: Strong built-in magnets ensure secure attachment to compatible devices for wireless charging.
- Dual Charging Options: Supports wireless magnetic charging (up to 15W/7.5W) and wired USB-C Power Delivery (PD) fast charging (up to 20W).
- 5000mAh Capacity: Provides reliable power on the go.
- Luxurious Dual-Glass Design: Features tempered glass panels for a premium look and scratch resistance.
- Comprehensive Safety Protections: Includes overcurrent, overvoltage, overheating, short circuit, overcharge, and over-discharge protection.

Figure 1: Kuulaa KL-YD71 Magnetic Portable Charger (Front, Back, and Side View)

Figure 2: Ultra-Slim Design of the Kuulaa KL-YD71 (6.9mm thickness, 110g weight)
3. Package Contents
- Kuulaa KL-YD71 5000mAh Magnetic Portable Charger
- USB-C Charging Cable
- User Manual (This document)
4. Specifications
| Feature | Specification |
|---|---|
| Model Number | KL-YD71 |
| Battery Capacity | 5000 mAh |
| Product Dimensions | 4.1 x 2.7 x 0.27 inches (10.4 x 6.8 x 0.69 cm) |
| Item Weight | 5.3 ounces (150 grams) |
| Wireless Charging Output | Up to 15W (7.5W for iPhone) |
| Wired Charging Output (USB-C) | Up to 20W Power Delivery (PD) |
| Input (USB-C) | 20W PD Max |
| Color | White |
5. Setup
5.1 Charging the Portable Charger
- Connect the provided USB-C charging cable to the USB-C port on the portable charger.
- Connect the other end of the USB-C cable to a compatible USB power adapter (not included). A 20W PD adapter is recommended for fastest charging.
- The LED indicators on the portable charger will illuminate to show the charging status.
5.2 LED Indicator Status

Figure 3: LED Indicator Meanings
- 1 LED (Blue): 0-25% battery remaining
- 2 LEDs (Blue): 26-50% battery remaining
- 3 LEDs (Blue): 51-75% battery remaining
- 4 LEDs (Blue): 76-100% battery remaining
- Red LED: Indicates an error or low power.
6. Operating Instructions
6.1 Wireless Magnetic Charging
- Ensure your smartphone is compatible with MagSafe technology (iPhone 12 series and newer) or has a MagSafe-compatible case.
- Align the Kuulaa KL-YD71 with the back of your compatible smartphone. The strong magnets will snap it into place.
- Charging will begin automatically. The LED indicators on the power bank will show its remaining charge.

Figure 4: Magnetic Attachment for Wireless Charging
6.2 Wired USB-C Charging
- Connect a USB-C to USB-C cable (or appropriate cable for your device) to the USB-C port on the Kuulaa KL-YD71.
- Connect the other end of the cable to your device.
- The portable charger will begin charging your device. This method supports up to 20W Power Delivery for fast charging compatible devices.
6.3 Simultaneous Charging
The Kuulaa KL-YD71 can charge two devices simultaneously: one wirelessly via magnetic attachment and another via the USB-C port.

Figure 5: Wireless and Wired Charging Options
7. Compatibility
The magnetic charging function is primarily compatible with iPhone 12 series, iPhone 13 series, iPhone 14 series, iPhone 15 series, and iPhone 16 series. For optimal magnetic attachment and charging, use an iPhone without a case, an official MagSafe case, or a third-party MagSafe-compatible case.
- Compatible: iPhone 12/13/14/15/16 series, iPhones with Official MagSafe / MagSafe Cases.
- Not Recommended: iPhone 12 mini and iPhone 13 mini due to size.
- Not Compatible: Magnetic cases with phone grips, non-magnetic cases.

Figure 6: MagSafe Case Compatibility Guide
8. Maintenance
- Keep the portable charger dry and away from moisture.
- Avoid exposing the device to extreme temperatures (hot or cold).
- 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.
9. Troubleshooting
9.1 Device Not Charging
- Ensure the portable charger itself is sufficiently charged. Check the LED indicators.
- For wireless charging, verify that your phone or case is MagSafe compatible and properly aligned.
- For wired charging, check that the USB-C cable is securely connected to both the portable charger and your device. Try a different cable if necessary.
- Remove any thick or non-MagSafe cases that might interfere with wireless charging.
9.2 Slow Charging Speed
- Wireless charging speeds can vary. iPhones typically charge at 7.5W wirelessly with third-party MagSafe accessories.
- For wired charging, ensure your device supports PD fast charging and you are using a compatible USB-C cable.
- Charging speed may decrease if the portable charger's battery level is very low or if the device is being used heavily during charging.
9.3 Overheating During Use
- It is normal for the portable charger and your phone to become slightly warm during charging, especially during fast charging or wireless charging.
- If the device becomes excessively hot, disconnect it immediately. Allow both the portable charger and your phone to cool down before resuming use.
- Ensure there is adequate ventilation around the device during charging. Avoid charging in confined spaces or under blankets.
10. Safety Information
Please observe the following safety precautions to prevent damage to the product or injury to yourself:
- Do not disassemble, modify, or repair the device.
- Do not expose to fire, water, or extreme temperatures.
- Avoid dropping or subjecting the device to strong impacts.
- Keep out of reach of children.
- Dispose of the product responsibly according to local regulations.

Figure 7: Superior Safety Protections
11. Warranty and Support
The Kuulaa KL-YD71 Magnetic Portable Charger comes with a 24-month warranty from the date of purchase. This warranty covers manufacturing defects and ensures a hassle-free and reliable charging experience.
For technical support, warranty claims, or any questions regarding your product, please contact Kuulaa customer service through the retailer where you purchased the product or visit the official Kuulaa website.
12. Official Product Videos
No official product videos with 'Seller' as creator type were provided in the product data to embed in this manual.


