From Ember, the Temperature Control Smart Mug 2 (14 oz) is a heated mug that keeps coffee at your chosen temperature between 120–145°F. It runs for up to 80 minutes on battery and delivers all‑day warmth on its charging coaster, making it ideal for desk work or long reading sessions. Set precise temperatures and get notifications with the Ember app, or use it standalone at a default 135°F that remembers your last setting. Auto wake/sleep sensors help conserve power, an LED lets you know when your drink is ready, and the hand‑wash‑only, scratch-resistant, IPX7 design is easy to clean.
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- Ember 2 lets you dial in the perfect temperature for hot drinks and keeps them warm for up to 80 minutes away from the coaster.
- The precise temperature control and intuitive app make it ideal for work-from-home setups or thoughtful gifting.
- Smart auto sleep and motion sensors add effortless convenience—no cold coffee or manual tweaking required.
- Coffee Journals rates Ember 2 4.3 out of 5 for smart usability and category-leading warmth, with minor marks for battery limitations.
Ember 2 Review: The Ultimate Temperature Control Mug?
Ember 2 puts precision coffee temperature control in your hands—literally. This sleek, next-generation smart mug offers advanced heating technology, app integration, and intuitive features designed to elevate your daily ritual from first sip to last. Whether you’re managing back-to-back meetings or savoring a quiet morning, Ember 2 aims to keep your coffee just the way you like it.
For buyers searching for the best blend of design, usability, and technology, Ember 2 stands out in a crowded market. We independently evaluated its features, workflow, and user feedback to help you decide if this temperature control mug is genuinely worth a spot in your home setup—or better left as wishlist inspiration.

Key Features of the Ember 2
The Ember 2 temperature control mug is packed with innovations that make hot drinks more enjoyable and precisely tailored to your preferences.
- Customizable Temperature Control: Set your preferred temperature (120°F–145°F) right from the Ember app or let the mug automatically settle at 135°F for optimal heat without fuss. Enjoy consistent coffee every time, whether you use the app or not.
- Smart Sensors & Auto Sleep: Ember 2 wakes up with the first drop of hot coffee and automatically sleeps when not in use. Smart motion sensors and auto sleep ensure energy is never wasted and your beverage doesn’t go cold.
- Durable, Easy-Clean Design: Thanks to a scratch-resistant coating and an IPX7 waterproof rating, this mug is built for everyday life. Hand-wash safely, with confidence it will stay sleek and withstand spills or brief immersion.
- Intuitive LED & Charging Coaster: A handy LED indicator lights up when your drink is ready, while the charging coaster extends warmth for all-day sipping—ideal for workspaces or long reading sessions.
Altogether, Ember 2 positions itself as the temperature control mug of choice for those who prize convenience, smart features, and reliable warmth.
Real-World Performance Testing
The Ember 2 temperature control mug excels in day-to-day comfort for coffee and tea lovers who value precision. The extended 80-minute battery allows flexibility, whether you’re at your desk or on the move, and the charging coaster makes all-day warmth effortless.
Workflow is refreshingly simple: pour your drink, set the desired temperature via the app (or skip it for 135°F out of the box), and let the mug handle the rest. The smart LED makes it easy to know your coffee is at the right warmth before you take a sip.
The scratch-resistant, IPX7-rated build stands up to hand washing and daily knocks, making this mug more durable than most battery heated mug competitors. It’s also a sleek fit for most cupholders and desk setups.
One limitation is its battery: those seeking back-to-back hot drinks or extended use away from a plug may need to rely on the coaster or accept periodic recharges. Still, Ember 2 makes temperature control effortless for most home and office users.
How It Compares to Alternatives
How does Ember 2 compare with other premium temperature control mugs? Here’s a focused look at two realistic alternatives in the smart mug space.
| Feature | Ember 2 | Cauldryn Coffee Travel Mug | Fellow Carter Everywhere Mug |
|---|---|---|---|
| Current Price | Check current price | Check current price | Check current price |
| Main Use Case | Home or office coffee temperature control | On-the-go, travel-friendly heating | Portable quality mug for heat retention (no active heating) |
| Key Strength | App-controlled precise heat and smart sensors | Boil and keep-hot functions, portable battery options | Exceptional thermal insulation and build quality |
| Main Trade-Off | Battery life limits long sessions away from the base | Larger size, heavier, less elegant for desktops | No temperature control—retains but cannot adjust temp |
Ember 2 is best for users who want precision coffee temperature control with elegant app features and convenient sensors. Travelers or those needing all-day heat away from a power source may prefer the Cauldryn, while purists who prioritize insulation may find the Fellow Carter more suited to their style.
Who Should Buy This?
Buy This If
- You want to maintain your ideal coffee or tea temperature throughout the workday.
- You appreciate smart features and intuitive app control.
- Gift-giving or treating yourself to a premium, desk-friendly mug matters to you.
Skip This If
- You often need long-lasting portable heat beyond 80 minutes without access to the charging coaster.
- You prefer a traditional mug without electronics or recharging.
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Ready to Upgrade Your Routine?
The Ember 2 offers a premium temperature control experience for coffee lovers who want every sip at the perfect warmth. If precision and smart design are on your wishlist, Ember 2 is worth considering for your home or workspace.
Everything You Need to Know
Before You Buy
Honest answers about real-world performance and value.
Can Ember 2 really keep coffee hot for 80 minutes without the base?
Yes, Ember 2 maintains your set temperature for up to 80 minutes off the charging coaster. For all-day warmth, keep it docked on the coaster between sips.
Is Ember 2 dishwasher safe?
No, Ember 2 should only be hand-washed. Its scratch-resistant, waterproof design makes cleaning by hand quick and safe.
Do you need the app to use Ember 2?
No, Ember 2 works right out of the box at a default 135°F, but the app lets you customize temperature and access extra features.









