1. Introduction and Product Overview
Thank you for choosing the Tristar BW-4791 Wireless Heating Cushion. This manual provides essential information for the safe and efficient use of your new heating cushion. Please read it thoroughly before first use and keep it for future reference.
The Tristar BW-4791 heating cushion offers wireless comfort with its integrated 5,000 mAh power bank, providing up to 2 hours of warmth at the maximum setting. It's designed for both home and on-the-go use, delivering targeted heat and relaxation.

Image: Users enjoying the heating cushion for pain relief, comfort, and relaxation in different environments.
Key Features:
- Wireless Operation: Powered by a 5,000 mAh power bank for portable use.
- Fast Heating: Reaches desired temperature in approximately 10 minutes.
- Adjustable Heat: Features 3 customizable heat settings.
- Targeted Warmth: Integrated heating elements provide even heat distribution over a 25 x 25 cm area.
- Comfortable Design: Soft fabric and generous 45 x 45 cm dimensions for optimal comfort.
- Easy Maintenance: Removable and machine-washable cover.
2. Safety Warnings
To ensure safe operation and prevent injury or damage, please observe the following safety precautions:
- High Temperature Warning: The heating cushion can become very hot. Avoid direct, prolonged skin contact, especially if you have sensitive skin or reduced sensation.
- Supervision: Do not leave the heating cushion operating unattended.
- Impaired Judgment: Do not use the cushion if you are under the influence of drugs, alcohol, or medication that may impair your judgment or ability to follow instructions.
- Children and Vulnerable Individuals: This appliance can be used by children aged 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.
- Medical Conditions: Consult a doctor before use if you have any medical conditions, especially those affecting circulation or skin sensitivity.
- Damage: Do not use the cushion if it is damaged, wet, or if the power bank or cables are faulty.
- Flammable Materials: Do not use near flammable materials or in an oxygen-enriched environment.
- Storage: Store in a dry place when not in use.
- Product Packaging: Always refer to the product packaging, labels, and instructions provided directly with the product for the most current safety information.
3. Product Components
The Tristar BW-4791 Wireless Heating Cushion package includes the following items:
- Tristar Wireless Heating Cushion (45 x 45 cm)
- 5,000 mAh Power Bank
- USB Charging Cable (20 cm)
- USB Charging Cable (2 m)

Image: Exploded view of the heating cushion components, including the power bank and charging cables.
4. Setup
4.1 Charging the Power Bank
- Locate the 5,000 mAh power bank and the provided USB charging cables.
- Connect one end of a USB cable to the power bank's input port.
- Connect the other end of the USB cable to a suitable USB power adapter (not included) or a powered USB port (e.g., computer, wall charger).
- The power bank's indicator lights will show the charging status. Charge until fully charged before first use.
4.2 Connecting the Power Bank to the Cushion
- Open the zipper on the heating cushion to access the internal pocket.
- Inside the pocket, you will find a USB connector.
- Connect the fully charged power bank to this USB connector.
- Place the power bank securely inside the pocket and close the zipper.
5. Operating Instructions
The heating cushion features an intuitive control button for easy operation.

Image: Detail of the control button and heat level indicators.
5.1 Powering On/Off
- To turn on the cushion, press and hold the power button located on the cushion's tag for a few seconds until an indicator light illuminates.
- To turn off the cushion, press and hold the power button again until the indicator light turns off.
5.2 Adjusting Heat Levels
The cushion has 3 adjustable heat settings:
- Low: Indicated by a specific color (e.g., green or blue light).
- Medium: Indicated by a specific color (e.g., orange light).
- High: Indicated by a specific color (e.g., red light).
To cycle through the heat settings, short press the power button while the cushion is on. Each press will change the heat level.
5.3 Automatic Shut-off
For safety and energy conservation, the heating cushion is equipped with an automatic shut-off function. It will automatically turn off after a certain period (typically 120 minutes at maximum level) to prevent overheating and conserve battery life. You can restart the cushion by pressing the power button again.
6. Maintenance
Proper maintenance ensures the longevity and hygiene of your heating cushion.
6.1 Cleaning the Cover
- Ensure the heating cushion is turned off and disconnected from the power bank.
- Unzip the cover and carefully remove it from the internal heating pad.
- The cover is machine washable. Follow the washing instructions on the care label (typically 30°C).
- Allow the cover to air dry completely before reassembling. Do not tumble dry.
6.2 Cleaning the Heating Pad
The internal heating pad is not washable. If necessary, gently wipe it with a damp cloth and mild detergent. Ensure it is completely dry before reinserting it into the cover or storing.
6.3 Storage
When not in use, store the cushion in a cool, dry place, away from direct sunlight and moisture. Ensure the power bank is disconnected from the cushion for long-term storage.
7. Troubleshooting
If you encounter any issues with your Tristar BW-4791 heating cushion, please refer to the following common problems and solutions:
- Cushion not heating:
- Ensure the power bank is fully charged.
- Verify that the power bank is securely connected to the cushion's internal USB connector.
- Press and hold the power button on the cushion's tag to ensure it is turned on.
- Check if the automatic shut-off has activated. If so, restart the cushion.
- Power bank not charging:
- Ensure the USB charging cable is properly connected to both the power bank and the power source.
- Try a different USB cable or power adapter.
- Ensure the power source (e.g., wall outlet, computer USB port) is active.
- Cushion turns off unexpectedly:
- The automatic shut-off feature may have activated. This is normal operation.
- The power bank may be low on charge. Recharge the power bank.
If the problem persists after trying these solutions, please contact customer support.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | BW-4791 |
| Dimensions (Cushion) | 45 x 45 cm |
| Dimensions (Product Package) | 11 x 45 x 45 cm |
| Weight | 750 grams |
| Power Bank Capacity | 5,000 mAh |
| Heat Levels | 3 |
| Heating Area | 25 x 25 cm |
| Maximum Autonomy | Up to 2 hours (at max level) |
| Heat-up Time | Approx. 10 minutes |
| Material (Internal) | ABS |
| Cover Material | Soft fabric (washable) |
| Color | Beige |
| Special Feature | Wireless with Power Bank |
9. Warranty and Support
Tristar products are manufactured to high quality standards. In the unlikely event of a defect, please refer to your purchase receipt for warranty information. The warranty period typically covers manufacturing defects from the date of purchase.
For technical support, spare parts, or any questions regarding your Tristar BW-4791 Wireless Heating Cushion, please contact your retailer or visit the official Tristar website for customer service contact details.
Please have your model number (BW-4791) and proof of purchase ready when contacting support.





