Introduction
Thank you for choosing the BOBOVR S3 Pro Battery Strap. This accessory is designed to enhance your virtual reality experience with Meta Quest 3 and Quest 3S headsets by providing extended battery life and improved comfort through an integrated head air cooling system. This manual will guide you through the installation, operation, and maintenance of your S3 Pro Battery Strap to ensure optimal performance and longevity.

The BOBOVR S3 Pro Battery Strap, shown here attached to a Meta Quest 3 headset, features a sleek design with an integrated cooling fan and an external battery pack.
Product Overview
Key Components
- Cooling System Head Strap: The main strap unit with an integrated head air cooling system.
- B100 Battery Pack: A 10000mAh hot-swappable battery pack for extended playtime.
- Honeycomb Pad: An additional pad for enhanced grip and comfort.
- Charging Cable: USB-C to USB-C cable for charging the battery pack.
Main Features
- Meta Quest 3/3S Compatibility: Designed specifically for seamless integration with Meta Quest 3 and Quest 3S headsets.
- Innovative Power Swap Design: Allows for quick and easy hot-swapping of battery packs, separating the discharge module from the battery to reduce heat.
- Enhanced Battery Capacity: The B100 battery system provides 10000mAh capacity, significantly extending VR playtime.
- Integrated Head Air Cooling System: Features silent technology with 100-level flexible wind speed adjustment to keep your head and face cool during long sessions.
- Optimized Back Structure: Flattened back design enhances comfort, especially during seated or reclined use, with adjustable height and a removable overhead support.

The S3 Pro features an upgraded comfort system with cloud-like enveloping sensation, zero facial pressure, and a comfortable design for resting use. It also includes a honeycomb pad for improved grip.

The new B100 battery management system offers multiple protections, 10000mAh capacity, 20W fast charging, and accurate battery percentage display. It significantly extends Quest 3 battery life.

The active ventilation system features an elegant aircraft engine turbine design, built-in head air-conditioning, and an intuitive dial for adjusting wind speed up to 100 levels.
Setup Guide
Installation Instructions
Follow these steps to properly install your BOBOVR S3 Pro Battery Strap onto your Meta Quest 3/3S headset:

- Remove Original Strap: Carefully remove the original strap from your Quest 3/3S headset. Follow the direction indicated by the arrow to detach it.
- Align and Attach Fixed Arm: Align the S3 Pro fixed arm with the Quest 3/3S sidearm. Push it firmly in the direction of the arrow until it clicks into place, ensuring the tail end is properly aligned.
- Connect Charging Cable: Insert the S3 Pro charging cable into the USB-C interface of your Quest 3/3S headset.
- Attach Battery Pack: Connect the B100 battery pack magnetically to the magnetic interface on the S3 Pro strap. Once connected, the installation is complete, and you can begin your virtual reality journey.

The BOBOVR S3 Pro is designed for seamless compatibility with both Meta Quest 3 and Quest 3S headsets, ensuring a perfect fit and enhanced experience for both models.
Operating Instructions
Battery Operation
- Hot-Swappable Design: The B100 battery pack can be easily detached and reattached even during use, allowing for continuous playtime.
- Battery Level Indicator: The S3 Pro features an accurate digital display on the battery pack that shows the remaining battery percentage.
- Low Battery Reminder: The system provides audible reminders when the battery level is low, prompting you to swap or recharge.
- Charging: Connect the provided USB-C cable to the B100 battery pack and a suitable power source (e.g., a wall adapter or computer USB port) for charging. The battery supports 20W fast charging.
Head Air Cooling System Operation
- Activation: To activate the head air cooling system, press the roller button located on the side of the strap.
- Wind Speed Adjustment: Rotate the roller button to adjust the wind speed. The system supports 100 levels of flexible wind speed adjustment, allowing you to customize the airflow to your preference.
- Power Source: The air cooling system requires the B100 battery pack to function. It is not compatible with the older B2 battery pack.
Care and Maintenance
- Cleaning: Use a soft, dry cloth to wipe down the exterior of the head strap and battery pack. For the padding, a slightly damp cloth with mild soap can be used, ensuring it is completely dry before re-use. Avoid harsh chemicals or abrasive materials.
- Storage: Store the S3 Pro Battery Strap in a cool, dry place away from direct sunlight and extreme temperatures. When not in use for extended periods, ensure the battery pack is partially charged (around 50%) to maintain battery health.
- Battery Care: Do not expose the battery pack to water or fire. Avoid dropping or physically damaging the battery. If the battery shows signs of swelling or damage, discontinue use immediately and dispose of it properly according to local regulations.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery pack not charging. | Cable not connected properly; faulty cable/charger; battery issue. | Ensure cable is securely connected. Try a different USB-C cable or charger. If problem persists, contact customer support. |
| Air cooling system not working. | Not activated; B100 battery not connected; low battery; system malfunction. | Press the roller button to activate. Ensure B100 battery is securely attached and charged. Check battery level. If still not working, contact support. |
| Head strap feels uncomfortable or loose. | Improper adjustment; worn padding. | Adjust the strap and overhead support for a snug fit. Ensure the honeycomb pad is correctly positioned. Replace padding if significantly worn. |
| Battery percentage display is inaccurate. | Temporary software glitch; battery calibration needed. | Fully discharge and then fully recharge the battery pack to recalibrate. If issue persists, contact customer support. |
Technical Specifications
| Feature | Specification |
|---|---|
| Model Name | S3 Pro |
| Compatible Devices | Meta Quest 3 / Quest 3S |
| Battery Capacity | 10000mAh (Two 5000mAh lithium cells in series, 7.3V total) |
| Charging Power | 20W Fast Charging |
| Air Cooling System | Built-in, 100-level adjustable wind speed |
| Connectivity Technology | USB |
| Item Weight | 10.1 ounces |
| Package Dimensions | 8.9 x 7.48 x 4.88 inches |
| Manufacturer | ShenZhen XiaoZhai Technology Co., Ltd |
| Country of Origin | China |
Warranty and Support
Warranty Information
BOBOVR products are manufactured with high-quality materials and undergo strict quality control. For specific warranty details and duration, please refer to the warranty card included with your product or visit the official BOBOVR website. Keep your proof of purchase for warranty claims.
Customer Support
If you encounter any issues or have questions regarding your BOBOVR S3 Pro Battery Strap that are not covered in this manual, please contact BOBOVR customer support. You can find contact information on the official BOBOVR website or through the retailer where you purchased the product.
For more information and to explore other BOBOVR products, visit the official BOBOVR store: BOBOVR Store on Amazon.