1. Product Overview
The Dr. Brown's AC261 Travel Baby Bottle Warmer is designed for convenient warming of breast milk or formula on-the-go. This portable, rechargeable, and cordless device offers precise temperature control and includes adapters for various bottle types.
Key Features:
- Portable Design: Compact and cordless for easy transport and use anywhere.
- Accurate Heating: Offers four temperature settings (80°, 98°, 103°, or 110° Fahrenheit) with a stainless-steel heating plate for even warming.
- Easy Operation: Simple twist-on mechanism and one-handed operation.
- Temperature Retention: Audible alert indicates completion, and the warmer maintains temperature for up to one hour.
- Broad Compatibility: Fits Dr. Brown's Wide Neck bottles and includes 3 adapters for Dr. Brown's Narrow, Avent, and Comotomo bottles. Additional adapters for NUK Simply Natural and Tommee Tippee bottles are sold separately.

Figure 1: Dr. Brown's Travel Bottle Warmer in use, warming a bottle in a car. This image demonstrates the portability of the device.
2. Important Safety Information
Please read all instructions before using the Dr. Brown's Travel Baby Bottle Warmer. Failure to follow these instructions may result in injury or damage to the product.
- Always check the temperature of the milk or formula before feeding your baby.
- Do not immerse the warmer base in water or other liquids.
- Keep out of reach of children.
- Use only the provided charging cable.
- Ensure the bottle is securely attached to the warmer to prevent leaks.
- The anti-tip sensor will stop warming if the device is not level.
- Do not use if the warmer or charging cable is damaged.
- Rinse and wipe down after each use.
3. Setup
3.1 Initial Charge
Before first use, fully charge the Dr. Brown's Travel Baby Bottle Warmer using the provided USB-C cable. The LED display will indicate charging status. A full charge is recommended for optimal performance.
3.2 Attaching a Bottle
- Ensure the silicone ring is properly seated in the warmer's opening to prevent leaks.
- Select the appropriate bottle adapter if using a bottle other than Dr. Brown's Wide Neck.
- Twist the bottle securely onto the warmer or the selected adapter.
- Flip the bottle and warmer assembly upside down so the warmer is upright and the bottle is inverted. This ensures proper contact with the heating plate.

Figure 2: The Dr. Brown's Travel Bottle Warmer with three included adapters for Dr. Brown's Narrow, Avent, and Comotomo bottles. This illustrates the versatility of the warmer.
4. Operating Instructions
4.1 Warming a Bottle
- After attaching the bottle as described in Section 3.2, press the power button to turn on the warmer.
- The LED display will show the current temperature. Press the power button repeatedly to cycle through the four available temperature settings: 80°F, 98°F, 103°F, or 110°F.
- Once the desired temperature is selected, the warmer will begin heating. The LED display will show the current temperature as it rises.
- An audible alert will sound when the target temperature is reached. The warmer will then switch to "keep warm" mode, maintaining the temperature for up to one hour.
- To stop warming, press and hold the power button until the display turns off.

Figure 3: Multiple warmers demonstrating the four temperature settings available for precise warming of milk or formula.
4.2 Anti-Tip Sensor
The warmer is equipped with an anti-tip sensor. If the device is not placed on a level surface or is tilted during operation, it will automatically stop the warming process to prevent spills and ensure safety. The display may show an error code or turn off.
Video 1: Official product video demonstrating the features and ease of use of the Dr. Brown's Travel Bottle Warmer, including its portability and temperature settings.
5. Bottle Compatibility
The Dr. Brown's Travel Baby Bottle Warmer is designed to fit Dr. Brown's Wide Neck bottles directly. For other popular bottle brands, the warmer includes three adapters:
- Dr. Brown's Narrow bottles
- Avent bottles
- Comotomo bottles
Two additional bottle adapters are available for separate purchase to fit NUK Simply Natural and Tommee Tippee bottles. The warmer is compatible with plastic, glass, and silicone bottles.

Figure 4: The Dr. Brown's Travel Bottle Warmer in a home setting, illustrating its use with various bottle types.
6. Cleaning and Maintenance
Proper cleaning ensures the longevity and hygienic operation of your bottle warmer.
6.1 Daily Cleaning
- Always ensure the warmer is turned off and unplugged before cleaning.
- Remove the silicone ring from the heating plate area.
- Wipe the stainless-steel heating plate and the interior of the warmer with a damp cloth and mild soap.
- Rinse the silicone ring and any adapters with warm, soapy water.
- Wipe all components dry before reassembling or storing.
- Do not use abrasive cleaners or scourers.

Figure 5: A hand demonstrating the removal of the silicone ring for easy cleaning of the warmer's heating element.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Warmer does not turn on. | Low battery or no charge. | Ensure the warmer is fully charged before use. |
| Milk is not warming or warming slowly. | Incorrect bottle attachment, low battery, or device not level. | Ensure the bottle is securely twisted on and the warmer is upright. Check battery level. The anti-tip sensor may have activated. |
| Leaking from the bottle connection. | Silicone ring improperly seated or bottle not tightened. | Verify the silicone ring is correctly in place. Tighten the bottle or adapter securely onto the warmer. |
| Temperature display is inaccurate or fluctuating. | Sensor interference or internal issue. | Ensure the heating plate is clean. If the issue persists, contact customer support. |
8. Specifications
- Model Number: AC261
- Package Dimensions: 8.11 x 3.94 x 3.9 inches
- Batteries: 1 Lithium Ion battery (included)
- Material Composition: Plastic with Electronic Components
- Item Weight: 1 pound
- Temperature Settings: 80°F, 98°F, 103°F, 110°F
- Charging: USB-C
9. Warranty and Support
For warranty information or product support, please refer to the documentation included with your purchase or visit the official Dr. Brown's website. Protection plans are available for purchase separately.
