Kuulaa J08
Kuulaa Portable Charger 10000mAh User Manual
Model: J08
Introduction
Thank you for choosing the Kuulaa Portable Charger 10000mAh. This compact and powerful device is designed to provide fast and reliable charging for your mobile devices on the go. Please read this manual carefully to ensure proper use and maintenance of your power bank.

Image: The Kuulaa Portable Charger, a compact gray device, held comfortably in a user's hand, highlighting its portability.
What's Included
Your package should contain the following items:
- 1 x Kuulaa 10000mAh Mini Power Bank
- 1 x Type-C Charge Cable
- 1 x User Manual (this document)
Product Features
- Fast Charging 22.5W: Delivers rapid power to compatible devices, charging up to 60% in approximately 30 minutes.
- Ultra-Compact Design: Significantly smaller and lighter than standard power banks, weighing only 6.1 ounces and measuring 3.1 inches in length.
- USB-C In & Out: Features a versatile USB-C port for both fast charging your devices and quickly recharging the power bank itself using a single cable.
- Advanced Safety Features: Equipped with a smart protection chip to guard against excessive current, overheating, and overcharging, ensuring safety for both the power bank and your connected devices.
- Universal Compatibility: Compatible with a wide range of devices including iPhones, iPads, and Android smartphones.

Image: A visual comparison showing the compact size of the Kuulaa Portable Charger next to a smartphone and a smaller charging block, illustrating its ultra-portable design.

Image: An illustration demonstrating the charging capacity of the Kuulaa Portable Charger, showing it can provide 1.8 charges for an iPhone 15, 1.8 charges for an iPhone 14 Pro Max, 11.5 charges for AirPods, and 1.5 charges for a Samsung S23.
Setup
Initial Charge
Before first use, it is recommended to fully charge your Kuulaa Portable Charger. This ensures optimal battery performance.
- Connect the provided Type-C cable to the USB-C port on the power bank.
- Connect the other end of the cable to a compatible USB wall adapter (not included) or a computer's USB port.
- The LED indicators on the power bank will illuminate to show the charging progress. All four LEDs will be solid when fully charged. A full recharge takes approximately 3 hours with an 18W power adapter.

Image: The Kuulaa Portable Charger being recharged via its USB-C port connected to a wall adapter, indicating a full recharge in 3 hours.
Operating Instructions
Charging Your Devices
- Connect your device's charging cable to the appropriate output port on the power bank (USB-C or USB-A).
- Connect the other end of the cable to your device.
- The power bank will automatically begin charging your device. The LED indicators will show the remaining battery level.
- To stop charging, simply disconnect your device.

Image: The Kuulaa Portable Charger connected via a USB-C cable to a smartphone, demonstrating its 22.5W fast charging capability, reaching 65% charge in 30 minutes.

Image: The Kuulaa Portable Charger simultaneously charging two devices, a smartphone and wireless earbuds, illustrating its multi-device charging capability.
Checking Battery Level
Press the power button once to view the current battery level indicated by the LED lights:
- 4 LEDs: 75% - 100%
- 3 LEDs: 50% - 75%
- 2 LEDs: 25% - 50%
- 1 LED: 0% - 25%
Maintenance
- Keep the power bank away from extreme temperatures (hot or cold) and direct sunlight.
- Avoid dropping or subjecting the power bank to strong impacts.
- Do not expose the power bank to water or excessive moisture.
- Clean the surface with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
- If storing for an extended period, charge the power bank to approximately 50% every 3 months to preserve battery life.
Troubleshooting
- Power bank is not charging / not turning on:
- Ensure the charging cable is securely connected to both the power bank and the power source.
- Try a different charging cable or wall adapter.
- Verify the power source is active.
- Device is not charging from the power bank:
- Check if the power bank has sufficient charge (press the power button to check LEDs).
- Ensure the charging cable connecting the power bank to your device is functional and securely connected.
- Try a different charging cable.
- Confirm your device is compatible with the power bank's output specifications.
- Slow charging:
- Ensure you are using a fast-charging compatible cable and your device supports fast charging.
- Verify that the power bank itself is fully charged.
- Some devices may limit charging speed if they are in heavy use or if their battery is nearly full.
Specifications
| Feature | Detail |
|---|---|
| Model Number | J08 |
| Battery Capacity | 10000 Milliamp Hours (mAh) |
| Output Power | Up to 22.5W (PD Fast Charging) |
| Input Power | Up to 18W (Fast Recharge via USB-C) |
| Connector Type | USB Type-C (Input & Output), USB Type-A (Output) |
| Product Dimensions | 3.17 x 2.28 x 1.06 inches |
| Item Weight | 7.2 ounces |
| Color | Gray |
| Manufacturer | Shenzhen Kula Technology Co., Ltd. |
Warranty and Support
For warranty information and customer support, please refer to the contact details provided on the product packaging or visit the official Kuulaa website. If you encounter any issues, please contact our customer service team for assistance. We aim to resolve your problem within 24 hours.
Manufacturer: Shenzhen Kula Technology Co., Ltd.
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