1. Introduction
Thank you for choosing the FEPPO Coffee Mug Warmer, Model DZ2503. This instruction manual provides essential information for the safe and efficient use of your new heated mug. Please read this manual thoroughly before first use and retain it for future reference.
2. Important Safety Information
To ensure safe operation and prevent damage, please observe the following safety precautions:
- Do not immerse the mug or charging base in water or other liquids.
- Keep the device away from children and pets.
- Use only the provided charging base and power adapter.
- Do not use the mug if it is damaged or malfunctioning. Contact customer support.
- Avoid touching the heating element directly when hot.
- Ensure the mug is placed on a stable, flat surface during use and charging.
- The splash-resistant lid is designed for heat retention, not for leak-proof travel. Avoid tipping the mug with the lid on.
- Do not place the mug in a microwave, oven, or freezer.
3. Product Overview
The FEPPO Coffee Mug Warmer is designed to keep your beverages at your preferred temperature. Key features include:
- Titanium-Coated Interior: The stainless steel interior features a durable titanium coating for corrosion resistance, high temperature tolerance, and pure beverage flavor without metallic aftertaste.
- Real-Time Digital Display: Shows the current beverage temperature.
- Temperature Control: Adjustable from 120°F to 150°F in 5°F increments.
- Built-in 2600mAh Battery: Provides portable warmth for up to 2 hours (4.5 hours with lid).
- 360° Charging Base: For convenient all-day temperature control when placed on the base.
- Ergonomic Grip: Designed for comfortable handling.
- Smart Auto-Off & Dry-Boil Protection: Enhances safety and extends product life.
3.1. Mug Construction

Image: Cross-section view illustrating the mug's construction, including the titanium-coated interior, aerospace-grade insulation, and BPA-free shell for optimal performance and safety.
3.2. Ergonomic Design

Image: A hand comfortably holding the FEPPO mug, demonstrating its ergonomic design for a secure and pleasant grip.
4. Setup
4.1. Package Contents
Before first use, please verify that all items are present:
- FEPPO Coffee Mug x 1
- Charging Dock x 1
- Splash-Proof Lid x 1
- Power Adapter x 1
- Instruction Manual x 1

Image: All components included in the FEPPO Coffee Mug Warmer package: the mug, charging dock, power adapter, and lid, alongside the product box.
4.2. Initial Charging
- Connect the power adapter to the charging dock and plug it into a standard electrical outlet.
- Place the FEPPO mug onto the charging dock. The mug can be placed in any orientation due to its 360° charging capability.
- The digital display on the mug will indicate charging status. A full charge takes approximately 2 hours.
- It is recommended to fully charge the mug before its first use.

Image: The FEPPO mug wirelessly charging on its circular base, illustrating the 360-degree charging feature.
5. Operating Instructions
5.1. Powering On/Off
- The mug automatically activates when a beverage is poured in and it detects liquid.
- To manually turn off, press and hold the power button (if available, otherwise it will auto-off).
5.2. Setting Temperature
- Once activated, the digital display will show the current beverage temperature.
- Use the left/right arrow buttons to adjust the desired temperature. Each tap adjusts the temperature by 5°F.
- The temperature range is 120°F to 150°F. The mug remembers your last setting (default 120°F out-of-box).
- The mug will heat or maintain the beverage at the set temperature.

Image: The FEPPO mug's digital display showing the real-time temperature and the touch controls for precise temperature adjustment.
5.3. Using the Lid
The included splash-resistant lid helps retain heat, extending the battery life and keeping your drink warmer for longer. Place the lid gently on top of the mug. Note that the lid is not leak-proof and is not designed for travel.
5.4. Automatic Safety Features
- Smart Auto-Off: The mug warmer automatically shuts off after 2 hours of inactivity to conserve battery and ensure safety.
- Dry-Boil Protection: If no water or liquid is detected in the mug, a flashing "00" alert will appear on the display, and the unit will power down immediately to prevent damage.
5.5. Operational Video Guide
Video: A comprehensive guide demonstrating the FEPPO Coffee Mug Warmer's features, setup, and daily operation, including temperature control and charging.
6. Maintenance
6.1. Cleaning
- Always ensure the mug is turned off and cool before cleaning.
- Hand Wash Only: The mug is not dishwasher safe. Hand wash the interior with mild soap and water.
- Do not use abrasive cleaners or scouring pads, as these can damage the titanium coating.
- Wipe the exterior of the mug and the charging base with a damp cloth. Do not immerse the charging base in water.
- Dry all components thoroughly before storage or next use.
6.2. Storage
Store the mug and charging base in a clean, dry place when not in use.
7. Troubleshooting
If you encounter issues with your FEPPO Coffee Mug Warmer, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Mug not heating or displaying "00" | No liquid detected or insufficient liquid. | Ensure there is enough liquid in the mug. If adding cream/milk, allow it to settle before turning on or adjusting temperature. |
| Mug not charging | Charging base not powered; mug not properly placed. | Check power connection to the charging base. Ensure the mug is correctly seated on the base. |
| Battery drains quickly | Mug used off-base for extended periods; initial charge not full. | For prolonged warmth, keep the mug on the charging base. Ensure the mug is fully charged before portable use. Using the lid extends battery life. |
| Temperature inconsistent | External factors (room temperature); lid not used. | Ensure the lid is used for optimal temperature maintenance. Avoid placing the mug in excessively cold environments. |
| Lid leaks or spills | Lid is splash-resistant, not leak-proof. | The lid is designed for heat retention, not for sealing. Avoid tilting or carrying the mug by the lid. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | FEPPO |
| Model Number | DZ2503 |
| Capacity | 17 Fluid Ounces |
| Power Source | Battery Powered |
| Battery | Built-in 2600mAh |
| Temperature Range | 120°F - 150°F (5°F increments) |
| Upper Temperature Rating | 150 Degrees Fahrenheit |
| Item Weight | 2.57 pounds |
| Package Dimensions | 7.4 x 7.17 x 5.79 inches |
| Color | Black |
| Material | Stainless steel with Titanium Coating (interior) |
9. Warranty and Support
FEPPO products are manufactured to high-quality standards. For information regarding warranty coverage, please refer to the warranty card included in your product packaging or visit the official FEPPO website. If you require technical assistance, troubleshooting beyond this manual, or have questions about your product, please contact FEPPO customer support through the retailer's platform or the contact information provided on the FEPPO brand store.