1. Introduction
Thank you for choosing the annapro A3 Max Battery Head Strap. This manual provides essential information for the proper setup, operation, and maintenance of your new accessory. Designed to enhance your virtual reality experience, the A3 Max offers extended playtime and improved comfort for your Meta Quest 3 or Quest 3S headset.
2. What's in the Box
- Head Strap X1
- P1 Battery Pack X1
- User Manual X1
3. Key Features
- Powerful Custom Battery: The 10,800mAh battery pack provides a maximum output of 20W, extending average playtime for Quest 3/3S by an additional 3-4 hours (depending on usage).
- Innovative Magnetic Battery: The ANNAPRO P1 battery offers convenient power with one-handed operation. It automatically attaches magnetically to the head strap. A power button allows you to stop charging with a double tap. Two batteries enable hot-swapping for continuous use (second battery sold separately).

Image: The magnetic battery pack easily attaches to the head strap, indicated by LED lights.
- Significantly Enhanced Comfort: The innovative helmet-style design is lightweight and comfortable, improving wearability. Its ergonomic balance reduces pressure, allowing for prolonged immersive experiences.

Image: Close-up of the ice silk cushion on top and PU leather cushion at the rear for enhanced comfort.
- Industry-Leading Standards: The head strap is constructed from high-quality materials. Side straps are designed to withstand over 100,000 bends, ensuring durability. The top features ice silk sponge for breathability and skin-friendliness, while the rear support uses PU leather sponge for comfort, softness, and easy cleaning.
- Patented Design: The ANNAPRO A3 Max is an efficient charging battery head strap accessory.
Video: Official product overview showcasing magnetic charging, fast charging capabilities, ergonomic design, and comfortable cushions.
4. Setup Instructions
- Remove Original Head Strap: Carefully detach the original head strap from your Meta Quest 3/3S headset.
- Attach A3 Max Head Strap: Align the side arms of the A3 Max head strap with the connection points on your headset. Gently push until they click securely into place.
- Connect Charging Cable: Locate the short USB-C cable integrated into the A3 Max head strap. Plug this cable into the USB-C port on your Meta Quest 3/3S headset.
- Attach P1 Battery Pack: The P1 battery pack is magnetic. Simply align it with the magnetic contacts on the rear of the head strap. It will snap into place automatically. Ensure the battery's LED indicators are visible.
- Adjust for Comfort: Use the adjustment knob located at the rear of the head strap to tighten or loosen the fit around your head. Adjust the top strap and side arms for optimal balance and comfort.

Image: A user demonstrating the adjustment of the head strap for a personalized fit.
5. Operating Instructions
- Powering On/Off the Battery: The P1 battery pack automatically begins charging the headset once connected. To manually stop charging, double-tap the power button on the battery pack. Double-tap again to resume charging.
- Checking Battery Level: The P1 battery pack features LED indicators to show its current charge level. Refer to these lights to monitor remaining power.
- Charging the P1 Battery Pack: Use a standard USB-C charging cable (not included with the head strap, but often supplied with the headset or a separate charging dock) to charge the P1 battery pack. The 20W fast charging capability ensures quick replenishment.
- Hot-Swapping Batteries: If you have a second P1 battery pack (sold separately), you can hot-swap them without interrupting your VR session. Simply detach the depleted battery and magnetically attach a fully charged one.
- Adjusting Fit During Use: The rear adjustment knob allows for quick and easy tightening or loosening of the head strap while wearing the headset, ensuring continuous comfort.
6. Maintenance and Care
- Cleaning Cushions: The ice silk sponge (top) and PU leather sponge (rear) cushions can be gently wiped with a damp cloth and mild soap. Avoid harsh chemicals or abrasive materials. Ensure cushions are completely dry before use.
- Cleaning Head Strap: Wipe the hard plastic components of the head strap with a soft, dry cloth.
- Storage: Store the head strap and battery pack in a cool, dry place away from direct sunlight and extreme temperatures.
- Cable Care: Avoid excessive bending or pulling of the integrated USB-C cable to prevent damage.
7. Troubleshooting
- Headset Not Charging:
- Ensure the P1 battery pack is securely attached and the USB-C cable is fully inserted into the headset.
- Double-tap the power button on the P1 battery pack to ensure charging is active.
- Check the P1 battery pack's charge level. Recharge if necessary.
- Uncomfortable Fit:
- Adjust the rear knob to find the optimal tightness.
- Ensure the top strap is positioned correctly to distribute weight evenly.
- Experiment with the angle of the side arms for better facial pressure distribution.
- Magnetic Battery Not Attaching:
- Ensure there are no obstructions between the battery pack and the head strap's magnetic contacts.
- Verify the battery pack is oriented correctly.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | A3 Max |
| Battery Capacity | 10,800mAh |
| Charging Output | 20W Fast Charging |
| Compatibility | Meta Quest 3, Meta Quest 3S |
| Materials | High-quality plastics, Ice Silk Sponge, PU Leather Sponge |
| Item Weight | 1.3 pounds |
| Package Dimensions | 9.17 x 7.13 x 5.43 inches |
9. Warranty and Support
annapro is committed to customer satisfaction. If you encounter any issues with your A3 Max Battery Head Strap, we offer repair and replacement services. Please refer to your purchase documentation for specific warranty terms and contact our customer support for assistance.
For further support, please visit the official annapro store or contact our customer service team.




