USB Thermostatic Mug Warmer – 3-Speed 55°C Constant Temp
USB Thermostatic Mug Warmer – 3-Speed 55°C Constant Temp
Keep Every Sip at the Perfect Temperature
Never settle for a lukewarm drink again. The JFBONIN USB Thermostatic Heating Coaster maintains your coffee, tea, or hot chocolate at a steady 55°C (131°F) — the ideal temperature for enjoying every last drop at your own pace. Whether you're deep in work, relaxing at home, or catching up on your favorite show, this smart coaster keeps your mug warm and ready whenever you are.
⚠️ Please Note: This is a thermostatic (temperature-maintaining) coaster — it is designed to keep already-hot beverages warm. It cannot heat cold water or room-temperature liquids from scratch.
Why You'll Love It
- 3-Speed Temperature Control — Choose from three warmth settings to match your preferred drinking temperature.
- Constant 55°C Output — Intelligent thermostatic technology locks in warmth without overheating your drink.
- USB Plug-In Power — Connects easily to any USB port, power bank, laptop, or wall adapter (5V/2A). No batteries needed.
- Generous 100cm Cable — The long cord gives you flexible placement on desks, side tables, and nightstands.
- Low 10W Power Draw — Energy-efficient design keeps running costs minimal.
- CE Certified — Meets European safety standards for peace of mind.
- Sleek ABS Construction — Durable, lightweight, and available in White, Pink, and Silver to complement any décor.
- No High-Concern Chemicals — Safe, food-adjacent surface with no hazardous substances.
Specifications
| Brand | JFBONIN |
| Model | Rst-77 |
| Material | ABS Plastic |
| Colors Available | White / Pink / Silver |
| Input | 5V / 2A (USB) |
| Power | 10W |
| Cable Length | ~100 cm |
| Max Temperature | 55°C (131°F) |
| Certification | CE |
| Origin | Made in Mainland China |
Perfect For
- Home office desks and workstations
- Bedroom nightstands for early-morning drinks
- Living room side tables
- Gift-giving — thoughtful and practical for coffee lovers
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Learn more: Nutrition.gov on cooking and food safety
Frequently Asked Questions
Q: Can this USB heating coaster warm up a cold drink from scratch?
A: No — the JFBONIN thermostatic heating coaster is designed to maintain the temperature of an already-hot beverage at a steady 55°C. It cannot heat cold or room-temperature liquids. Always pour a hot drink before placing it on the coaster.
Q: What USB power sources are compatible with this mug warmer?
A: The coaster uses a standard USB plug (5V/2A input, 10W) and works with most USB power sources including laptop USB ports, USB wall adapters, desktop hubs, and power banks. Just ensure your source supports at least 2A output for best performance.
Q: How do the 3-speed temperature settings work?
A: The coaster features three selectable heat levels. Each step adjusts the surface heating intensity, allowing you to fine-tune warmth to your preference — whether you like your coffee mildly warm or consistently hot at the full 55°C constant temperature setting.
Q: Is the heating coaster safe to use on wooden or delicate surfaces?
A: The ABS base is designed to direct heat upward toward your mug rather than downward. However, as with any warming device, it is advisable to place it on a heat-resistant, flat surface and avoid prolonged contact with sensitive materials like untreated wood or plastic tabletops.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.