1. Introduction
The Braun All-in-One Series 9 AIO9540 is a versatile grooming kit designed for professional-grade shaving and trimming from head to toe. This device features a ProBlade for exceptional precision, SkinGentle technology for sensitive areas, and a range of attachments for beard, hair, body, nose, and ear trimming. It is 100% waterproof and rechargeable, offering up to 120 minutes of cordless operation.
2. Important Safety Information
Please read all instructions carefully before using this appliance. Keep this manual for future reference.
- This trimmer is designed for trimming nose and ear hair. Do not attempt to use it for other purposes.
- If you have a medical condition in the nose or ear area that requires medical attention, exercise caution when using the device or consult your doctor.
- Never use the device if the cutting elements are damaged or broken.
- Keep the device dry.
- This device can be used by children aged 8 years and above, and by persons with reduced physical, sensory, or mental capabilities or lack of experience and knowledge, provided they have been given supervision or instruction concerning safe use of the device and understand the hazards involved.
- Children should not play with the device. Cleaning and maintenance operations should not be performed by children without adult supervision.
- Please use only the following type of batteries for this device: 1 x LR03 (AAA alkaline batteries, 1.5 V).
- Insert the battery respecting the correct polarity.
- Do not use batteries that are damaged or leaking.
- Do not recharge non-rechargeable batteries.
- Remove rechargeable batteries from the device before recharging them.
- Batteries may leak if they are empty or not used for a prolonged period. Promptly remove empty batteries and avoid contact with skin when handling leaking batteries.
- Dispose of batteries safely in a designated location.
- Do not short-circuit the battery terminals.
- Do not expose the device or battery to excessively high temperatures.
3. What's in the Box
Your Braun All-in-One Series 9 AIO9540 grooming kit includes the following components:
- Braun All-in-One Series 9 Trimmer
- Pouch
- Storage Bag
- AAA battery (for nose/ear trimmer)
- Nose and Ear Trimmer attachment
- Charging Base
- Cleaning Brush
- Adjustable Beard Combs (3-21 mm)
- Fixed Beard Combs
- ProDetail Trimmer
- SmoothShave Head
- PrecisionShave Head
- Hair Blending Combs
- SkinGuard Trimmer and Body Combs
- Gillette Labs Razor
- Eyebrow Comb


4. Setup
4.1 Charging the Device
- Ensure the device is switched off.
- Connect the charging cord to the charging base.
- Place the trimmer onto the charging base.
- Plug the charging cord into a power outlet. The charging indicator light will illuminate.
- Allow the device to charge fully before first use. A full charge provides up to 120 minutes of cordless operation.
4.2 Attaching and Detaching Trimmer Heads/Combs
- To attach a trimmer head or comb, align it with the main unit and press firmly until it clicks into place.
- To detach, gently pull the head or comb away from the main unit.
- Always ensure the device is switched off before changing attachments.
5. Operating Instructions
The Braun All-in-One Series 9 offers various attachments for different grooming needs. Select the appropriate head and comb for your desired style.
5.1 General Trimming
- Ensure your skin and hair are clean and dry (or wet if using in the shower, as the device is waterproof).
- Attach the desired trimmer head and comb.
- Press the power button to turn on the device.
- Hold the trimmer against your skin and move it slowly against the direction of hair growth for best results.
- For precise edging, remove the comb and use the trimmer head directly.
5.2 Specific Applications
- Beard Trimming: Use the adjustable beard combs (3-21 mm) or fixed beard combs to achieve your desired beard length.
- Hair Trimming: Utilize the hair blending combs for precise haircuts and styling.
- Body Grooming (BodyGentle Mode): Attach the SkinGuard trimmer and body combs. Activate BodyGentle mode for a safe and comfortable shave on sensitive areas. The SmoothShave head provides smooth skin and comfort for the body.
- Nose and Ear Trimming: Use the dedicated nose and ear trimmer attachment for precise and comfortable removal of unwanted hair.
- Clean Shave: For a close shave, use the included Gillette Labs razor.



6. Maintenance
6.1 Cleaning
The Braun All-in-One Series 9 is 100% waterproof, allowing for easy cleaning under running water.
- After each use, switch off the device.
- Remove the trimmer head or comb.
- Rinse the trimmer head and the main unit under warm running water until all hair and debris are removed.
- Use the included cleaning brush to remove stubborn hair from the cutting elements.
- Allow all parts to air dry completely before reassembling or storing.
6.2 Storage
Store the device and its accessories in the provided pouch or storage bag in a dry place, away from direct sunlight and extreme temperatures.
7. Troubleshooting
If you encounter any issues with your Braun All-in-One Series 9, please refer to the following common solutions:
- Device not turning on: Ensure the device is fully charged. Check if the power button is pressed firmly.
- Poor trimming performance: Clean the trimmer head and cutting elements thoroughly. Ensure the blades are not damaged. Replace attachments if necessary.
- Battery not charging: Verify that the charging cable and base are properly connected and plugged into a working power outlet. Ensure the device is correctly seated on the charging base.
- Excessive noise or vibration: This may indicate a loose or damaged attachment. Turn off the device, remove and reattach the head, or replace it if damaged.
If the problem persists, please contact Braun customer support for assistance.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | AIO9540 |
| Power Source | Battery (Rechargeable Li-Ion) |
| Battery Type (Nose/Ear Trimmer) | 1 x LR03 (AAA alkaline, 1.5 V) |
| Run Time | Up to 120 minutes (cordless) |
| Waterproof | Yes (100% waterproof) |
| Blade Material | Stainless Steel |
| Head Type | Foil Heads |
| Color | Grey |
| Recommended Uses | Beard, Body, Ear, Nose, Head |
| Special Features | Waterproof, Multigroomer, Removable Head, Detachable Head |
| Package Dimensions | 25 x 16.1 x 8.1 cm; 830 grams |

9. Warranty and Support
Braun offers a comprehensive warranty for your All-in-One Series 9 AIO9540 device.
- Legal Warranty: 3 years.
- Additional Warranty: 2 years, for a total of up to 5 years.
Terms and conditions apply. For full details, please visit braun.com.
For information on commercial guarantees and durability in Europe, you can visit europa.eu/youreurope/commercial-guarantee-durability.
9.1 Customer Support
For further assistance, product registration, or to find service centers, please visit the official Braun website or contact their customer service department.








