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Ember Temperature Control Smart Mug 2, 10 Oz, App-Controlled Heated Coffee Mug with 80 Min Battery Life and Improved Design, Black
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Purchase options and add-ons
Brand | Ember |
Color | Black |
Special Feature | Auto Sleep, Heat Reveal Technology, App Controlled, Scratch Resistant |
Style | Modern |
Theme | Holiday |
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About this item
- Ember Coffee Mug with Longer Lasting Battery: Our updated smart coffee mug's extended battery life keeps your drink at your preferred temperature (between 120°F - 145°F) for up to 80 minutes on a full charge or all day on its redesigned charging coaster
- Smart With or Without App: Pair this temperature control mug with the Ember app to set the temperature, customize presets and more; Our self-heating coffee mug is also functional without the app and remembers your last-used temperature (135°F out of box)
- Auto Sleep: Our heated coffee mug intelligently senses when to turn on and off; The mug enters sleep mode when empty or after 2 hours of inactivity; Ember wakes up when it senses movement or liquid
- Hand Wash Only: An updated scratch-resistant coating is safe to hand wash; Ember Mug 2 is IPX7 rated and fully submersible up to 1 meter deep
- Perfect Gift for a Life Well Sipped: Whether self-gifted or given to another, there's no better way to share warmth than a favorite drink at just the right temperature every time
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Product Description

Ember, The World’s First Temperature Control Mug, is a design led temperature control brand and technology platform, whose mission is to revolutionize the way people eat, drink and live. Founded by inventor and serial entrepreneur Clay Alexander, Ember creates, designs and develops temperature control products that offer people complete customization. The award-winning Ember Travel Mug and Ember Mug are the most advanced coffee mugs on the market, allowing you to set and maintain your preferred drinking temperature for hot beverages.
Key Features
Keep your drink perfectly hot
Set your preferred drinking temperature.
Control with smartphone
Set your temperature, customize presets, receive notifications and more.
Safe to hand wash
Ember Mug 2 is IPX7 rated and fully submersible up to 1 meter deep.
Auto sleep
Ember intelligently wakes up when hot liquid is poured in and enters sleep mode when not in use.

Long Lasting Battery
With a built-in battery, Ember Mug 2 will maintain your desired drinking temperature for up to 1.5 hours, or all day when paired with the included charging coaster.

Smart LED
LED light at the base of the mug will inform you when your beverage is heating up or cooling off, when it is ready to drink and when your battery needs to be charged. Personalize your mug by changing the LED to your favorite color.
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Travel Mug 2, 12 oz
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Ember Mug 2, 14 oz
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Ember Mug 2, 10 oz
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Ember Metallic Mug 2, 10 oz
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Ember Cup, 6 oz
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Customer Reviews |
3.7 out of 5 stars 2,094
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4.2 out of 5 stars 18,520
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4.2 out of 5 stars 18,520
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4.2 out of 5 stars 18,520
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Price | $298.00$298.00 | $147.00$147.00 | $117.95$117.95 | $119.99$119.99 | — no data |
Capacity | 12 oz | 14 oz | 10 oz | 10 oz | 6 oz |
Battery life | 3 hours | 80 minutes | 1.5 hours | 1.5 hours | 1.5 hours |
Adjust temperature on mug | ✓ | no data | no data | no data | no data |
Use with Ember app (iOS and Android) | ✓ | ✓ | ✓ | ✓ | ✓ |
Safe to hand wash | ✓ | ✓ | ✓ | ✓ | ✓ |
Auto sleep feature | ✓ | ✓ | ✓ | ✓ | ✓ |
Temperature range | 120°F – 145°F (50°C – 62.5°C) | 120°F – 145°F (50°C – 62.5°C) | 120°F – 145°F (50°C – 62.5°C) | 120°F – 145°F (50°C – 62.5°C) | 120°F – 145°F (50°C – 62.5°C) |
Compatible with Ember Car Charger | ✓ | no data | no data | no data | no data |
Videos
From the brand

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Ember Mug: Metallic Collection
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Product information
Brand | Ember |
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Color | Black |
Special Feature | Auto Sleep, Heat Reveal Technology, App Controlled, Scratch Resistant |
Style | Modern |
Theme | Holiday |
Recommended Uses For Product | Home |
Included Components | cup |
Specific Uses For Product | Hot Drinks |
Shape | Round |
Pattern | Solid |
Product Care Instructions | Hand Wash Only |
Age Range (Description) | Adult |
Material Feature | Heat Resistant, Unbreakable |
Reusability | Reusable |
Unit Count | 1.0 Count |
Product Dimensions | 6"W x 5"H |
Number of Items | 1 |
Manufacturer | Ember |
UPC | 810011400085 |
Global Trade Identification Number | 00810011400085 |
Size | 10 oz |
Item Weight | 1 pounds |
ASIN | B07NQRM6ML |
Item model number | CM191000US |
Batteries | 1 Lithium Ion batteries required. (included) |
Customer Reviews |
4.2 out of 5 stars |
Best Sellers Rank | #5,314 in Kitchen & Dining (See Top 100 in Kitchen & Dining) #69 in Insulated Cups & Mugs |
Date First Available | February 14, 2019 |
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Ember Temperature Control Smart Mug 2, 10 Oz, App-Controlled Heated Coffee Mug with 80 Min Battery Life and Improved Design, Black
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WARNING:
Top Brand: Ember
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers appreciate that the mug keeps beverages at 145 degrees and makes drinks more enjoyable, making it a perfect gift for tea and coffee lovers. The build quality is good, though durability receives mixed feedback with some saying it holds up fine while others find it poorly engineered. Functionality and battery life are major concerns, with customers reporting that the new app doesn't work properly and the battery doesn't last as long as expected. The charging capability is also problematic, with customers noting spotty charging performance and issues with the coaster charger. Customers find the mug's value for money questionable, describing it as an expensive paperweight.
AI-generated from the text of customer reviews
Customers appreciate that the mug keeps beverages at the perfect temperature, maintaining 145 degrees and piping hot, with the ability to set desired temperatures.
"...I love the app feature that lets you customize the exact temperature to your liking...." Read more
"...While on the charger, it will heat up your beverage to HOT rather quickly. While off of the charger it takes way too long to do so...." Read more
"...easily get distracted with emails and I love how this mug keeps my coffee the perfect temp even if I get distracted with work...." Read more
"...setup use very easy just charge your mug and download the app to set your preferred temperature...." Read more
Customers appreciate the mug's build quality, noting that it feels like a quality item, with one customer mentioning it performs better than a plain ceramic mug.
"The Ember Mug is both stylish and practical—perfect for keeping your coffee or tea nice and hot for hours...." Read more
"...months (Originally 3 star), I have to reduce its rating... The mug itself is great, works well, and does what it says...." Read more
"...PROS: 1- Great build quality, just don't use a metal spoon to avoid scratches...." Read more
"...It was in excellant condition and works perfectly, so far. I am very pleased...." Read more
Customers find the mug makes beverages more enjoyable and appreciate it as a perfect gift for tea and coffee lovers.
"...recommend it for everyone who takes their time drinking and enjoying tea or coffee...." Read more
"...Keeps my tea at the temperature I set, making every sip enjoyable. Pros: Heats relatively fast Keeps Temp very well...." Read more
"...So all said, Great mug ... but not Perfect. And yes, for the record ... app still kinda stinks...." Read more
"...They are really a wonderful treat if you've got the budget for it." Read more
Customers have mixed experiences with the mug's functionality, with some saying it works well and the app performs great, while others report that it quits working and the application doesn't function properly.
"...to reduce its rating... The mug itself is great, works well, and does what it says. It keeps my drinks at the temperature I set it to...." Read more
"...10+ Min on average to reach your preferred temperature, the mug works on 110/220v if you need to travel...." Read more
"...It only works for 90 minutes. Not long enough for me, I drink my coffee over time...." Read more
"It worked great for quite a long time but the heater did end up going bad after about a year of my husband yawing it of course when I said use he..." Read more
Customers have mixed experiences with the mug's durability, with some reporting it holds up fine and lasts long enough, while others mention that the coasters break frequently and the coatings aren't durable.
"...They are tiny little spring loaded prongs that are predisposed to break if you do not baby the coaster...." Read more
"...that it keeps tea or coffee warm at a stated temperature but the mug is not cheap. it takes more than 2 hours to get the battery back to 100%." Read more
"...So in summary: -The mug is absolutely great, so far it's held up fine, with no chips/scratches...." Read more
"...Many reviewers have said the coatings aren't durable, I 100% disagree. They are scrubbing or stirring hard. or using one of those frothing wands...." Read more
Customers find the mug overpriced, particularly noting that the charger plates are unreasonably expensive.
"...BUT DOES IT SOLVE THE COLD COFFEE PROBLEM? Ember is expensive. For that price, it should ensure I never have cold coffee again...." Read more
"...and this is the biggest reason for the loss of a star: The price is too darn high...." Read more
"...I hope the charger doesn’t die completely. Crazy expensive, but Ember uses induction heating to break the 125° barrier...." Read more
"...Definitely worth the investment if you enjoy your hot drinks at the perfect temp!" Read more
Customers report significant issues with the mug's battery life, noting that it only lasts about 45 minutes and shows declining performance over time.
"...I will say, the battery doesn't last too long if you're not keeping it on the coaster, but since I primarily got this for an office it's not a deal..." Read more
"...2- The battery percentage decreases rapidly after a full charge until it reaches 3%, where it remains for a long time...." Read more
"...The battery has degraded relatively quickly with heavy use and no longer lasts more than 20-30 minutes off of the coaster...." Read more
"...The battery really only lasts about an hour and some change...." Read more
Customers report issues with the mug's charging capability, noting that it becomes spotty and stops working entirely.
"...It takes too long to recharge. I want more than 90 minutes warming time. Taking the base and plugging it in wherever I go isn’t feasible...." Read more
"...CONS: 1- The charging time is very long more than two hours to get fully charged, this is very annoying!!..." Read more
"...It's not inductive charging and I'm not sure it could be given the threat of liquids...." Read more
"...The biggest disappointment is that the charging coaster stopped working making this a mug that doesn't keep your coffee warm nor can you reheat in it..." Read more
Reviews with images

As described, but...
Top reviews from the United States
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- Reviewed in the United States on April 21, 2025Color: Rose GoldSize: 10 ozVerified PurchaseThe Ember Mug is both stylish and practical—perfect for keeping your coffee or tea nice and hot for hours. I love the app feature that lets you customize the exact temperature to your liking. It’s such a small luxury that makes a big difference in your daily routine. The color I picked was such a hit that my wife’s office team now wants to order them for their own desks. Definitely worth the investment if you enjoy your hot drinks at the perfect temp!
- Reviewed in the United States on February 3, 2025Color: WhiteSize: 10 ozVerified PurchaseThis product is quite impressive. While on the charger it will keep your beverage HOT all day. Off of the charger it keeps it HOT for 1 hr. While on the charger, it will heat up your beverage to HOT rather quickly. While off of the charger it takes way too long to do so. The product itself is amazing and I really recommend it for everyone who takes their time drinking and enjoying tea or coffee. I got this for my wife for Christmas because she constantly has to microwave her coffee because we have 5 children … but mainly because the 19 month old is demanding lol. I just regret getting a 10oz. I didn’t realize how tiny 10oz is because I assumed most mugs are 8oz. Wrong! lol. I am exchanging this for the 14oz. With the 10oz, once you put the coffee there’s hardly room for creamer and sugar (when it comes to a real coffee drinker). I gave it 5 stars because the product works excellently. The app is very impressive and fun (to me). I love to watch on the app how the T° of the coffee goes down immediately after pouring in creamer. I love it.
You can customize the color code of the light on the mug and name the mug in the app. You can also set the T° you want your beverage to be going forward (set it and forget it). It’s awesome. I watched a YouTube video about the mug and the review said they don’t think it’s worth the $ although the product worked really well. That’s kind of an oxymoron. I think you’re getting what you pay for and in a good way. Your beverage literally stays HOT or (if you want) warm until the very last drop. I don’t often drink coffee or even tea, but when I do it’s Dos Equis lol jk… when’s I do I can’t stand where the last few sips are cold. I want to get one for myself except I hardly drink tea or coffee, just to show you how great the product is. I think the 10oz is too tiny. 10oz might not be as necessary to be in the size of a tech mug since it’s not much to begin with and can be finished rather quickly (although my wife still appreciates it in her lifestyle). For the real tea and coffee drinkers out there I highly recommend this product, but the largest versions.
- Reviewed in the United States on March 15, 2025Color: CopperSize: 14 ozVerified PurchaseI love this mug. I work in a home office and easily get distracted with emails and I love how this mug keeps my coffee the perfect temp even if I get distracted with work. I will say, the battery doesn't last too long if you're not keeping it on the coaster, but since I primarily got this for an office it's not a deal breaker for me. If it's away from the coaster, it may only stay warm for around an hour, which is still a help in my opinion. Connecting the mug with the app every day is slightly annoying but not a big deal. I thought it would just stay connected after the first time but when I don't open the app and pair it every morning it doesn't get hot, only takes like 5 seconds though. Always room for improvement but overall I really like the mug. I've heard mixed reviews on the durability, so I'm curious how it will hold up over time, I also bought the protection plan just in case, but so far so good.
- Reviewed in the United States on May 29, 2022Color: BlackSize: 14 ozVerified PurchaseThe original review was accurate, but now that I've had the mug for 6 months (Originally 3 star), I have to reduce its rating... The mug itself is great, works well, and does what it says. It keeps my drinks at the temperature I set it to. The reason I'm reducing the rating here for 2 reasons.
1) Trying to reach an actual person or something more intelligent than an automated help desk, is seeming to be nearly impossible.
- To expand on this: I have been unable to find any contact information to report any issues I do have with the mug or software (I have no issues with the mug so far, but the software annoys me to no end).
2) The software for the mug is so far below par, that they might as well just have a digital display on the side to show the temp and just set it that way.
- Let me expand on this:
a) If you don't keep your mug paired, ie: carry it with you 100% of the time, anytime it isn't paired, it forgets its pairing, and you have to go through the pairing procedure again to reconnect it. My car is a 2014, and the BlueTooth in it remembers my phone when I start it up, but this mug cannot.
b) There's no way to override the heating to ON, if the sensor doesn't trigger to say the mug isn't empty, it won't turn on, even in the software Bluetooth connection. Through some digging, it states that it determines if it's empty by the significant difference in temperature: The mug is cold, pour warm to hot fluid in it, and it detects the temp change and determines it's not empty. I understand this is probably a safety feature to prevent the mug from burning out, but there should be some way to turn it on when you put room temp liquid into a room temp mug. (I usually make a batch of tea, and if I don't finish it all in a day, I use it the next day, I shouldn't have to microwave the first cup just to get it hot enough for the mug to realize it's full.)
So in summary:
-The mug is absolutely great, so far it's held up fine, with no chips/scratches. Works great to keep temp set.
-Software needs a LOT of work. The biggest issue is the Bluetooth connection/protocol. I shouldn't have to re-pair it every day just to connect to the mug to change it from Tea to coffee, or some other temp for a different drink.
-Better contact forms, for when you can't resolve the problem via automated help.
I'm hoping that by rating this at only 1 star, maybe I'll get a way to contact the company, or at least they'll read this review and take the issues under advisement. Maybe even make a suggestions/complaints form to get these issues noticed so they know what to work on. Until I see a way to contact a live person, even if it's just email, or something simple, I cannot rate this higher than a 1. IF I were having a real issue with this mug (like it not working) I'd be out the money it cost me to buy it.
Original Review Below this line:
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Keeps my tea at the temperature I set, making every sip enjoyable.
Pros:
Heats relatively fast
Keeps Temp very well.
Con's:
It's for Right Handers, if you're left-handed, (or hold the mug in your left hand), the LED is on the back side where you can't see it (less of a problem while you're actually holding it), but if you set it down for grabbing with your left hand you can't see the LED.
The software is a little glitchy. I tried setting it to Celsius for a little bit, then when I tried to switch it back to Fahrenheit, it wouldn't switch, I had to reset the app completely to default to get it back to Fahrenheit.
Couldn't find a contact form for issues (like the above software glitch), or suggestions.
- Reviewed in the United States on April 17, 2025Color: BlackSize: 10 ozVerified PurchaseThis is my second Ember mug. The first one is over two years old and doesn't hold a charge long. I was happy to get this one because of its cost. But I am even more pleased that this one maintains its pairing. I never did get the first to stay paired once my phone went dark. This one hasn't yet forgotten in three weeks. But all is not perfect. It doesn't remember the hold temp from day to day so I have to train myself to do that every day.
Top reviews from other countries
- Ayoob.Reviewed in the United Arab Emirates on March 29, 2025
5.0 out of 5 stars Ok
Color: WhiteSize: 10 ozVerified PurchaseOk
- Scott MarshallReviewed in Australia on December 3, 2024
3.0 out of 5 stars Love HATE
Color: WhiteSize: 14 ozVerified PurchaseEmber cups are a fantastic concept and incredibly useful, but I’ve encountered some challenges with the company's aftercare service. It's frustrating that I've had to rely on Amazon for repeated replacements of my cups. For users who utilize them often, it can become a hassle to request repairs or full replacements regularly.
It’s disappointing, especially considering the investment. I hope the company can improve their customer support to match the quality of their product!
- Melannie BarrientosReviewed in the United Arab Emirates on September 30, 2023
5.0 out of 5 stars It works
Color: Stainless SteelSize: 10 ozVerified PurchaseWorks effectively as described.
- GaryReviewed in Singapore on July 31, 2020
5.0 out of 5 stars Good product good quality
Color: BlackSize: 10 ozVerified PurchaseGood product. Working as expected
- Amazon CustomerReviewed in India on January 8, 2025
3.0 out of 5 stars Great for coffee lover, not so great for tea lovers
Color: WhiteSize: 10 ozVerified PurchaseThe Ember Smart Mug 2 can keep your tea/coffee at the perfect temperature for hours, making every sip as good as the first. However if you like very very hot tea then this product is not for you. Because usually we like tea to be very hot. In short it does not give you a boiling hot tea. just enough to keep it not cold.