Buying Guides

Ember Coffee Mug Review

Just so you know, if you click on a product on and decide to buy it, we may earn a small commission.

Every coffee drinker relates to the sinking feeling you get when you reach for your coffee, only to find that it’s lukewarm. What if there was a way to keep this from happening?

The Ember Mug would like a word.

On Sale

Equipped with a rechargeable battery that provides warmth and temperature control functions, this smart mug will make sure your beverage isn’t too hot or too cold. Not impressed yet? Keep reading to find out why we enjoy using the Ember Mug and what makes it so unique.

Things to Consider Before Buying a Coffee Mug

If you’re like many coffee lovers, then you like to drink your coffee throughout the morning. This allows you to gradually get your energy up and keep your wits about you as you get ready for the day.

Being a slow drinker also allows you to more fully enjoy the rich, nutty, or robust taste of your perfectly brewed coffee. But no matter the blend, you still get the same results if you take too long to drink it—a cold cup of coffee.

Iced coffee may be suitable for some people, but isn’t ideal if you crave the comforting, invigorating warmth of freshly brewed coffee. Besides, what’s the fun in having a cup of steaming hot coffee when you can’t savor its freshness as the day wears on?

That’s why mug warmers have become such a popular option among avid coffee drinkers who want to keep their coffee warm for as long as possible. Unlike mug warmers, the Ember Mug’s warmer is built-in, which means there’s no need to purchase a warmer for your mug. It also means that it won’t take up unnecessary desk space.

The Ember Mug isn’t like any old insulated mug that can keep beverages hot. This smart mug can keep your coffee at a precise temperature. Therefore, it would be a viable choice if you’re one of those people who despise the taste of cold coffee or can’t tolerate the sensation of steaming hot coffee on your tongue.

Ember Temperature Control Smart Mug 2, 14 Oz, App-Controlled Heated Coffee Mug with 80 Min Battery...

Ember Mug Overview

The Ember Mug promises to maintain your chosen temperature for 1.5 hours with the 10 oz. mug and for 80 minutes with the 14 oz version. It comes with a charging coaster, an AC power adaptor, and a Quick Start Guide.

The second generation of the brand’s smart mugs features a new and improved charging coaster as well as longer battery life. The charging coaster has a more minimal, streamlined look, which makes the Ember Mug stand out on any desk or counter.

The new mug is now fully submersible underwater up to one meter deep. This means that cleaning and maintenance is a lot easier than it was with the older generation.

The market leader, Tech Tools Smart Travel Mug is more portable than the Ember Mug. It comes with a handle, lid, and 12V car charger. It also has a higher capacity (16 oz).

Things We Like

  • Smart LED indicator
  • Long-lasting battery
  • Easy temperature control
  • Intelligent on/off sensor
  • Bluetooth connectivity

Room for Improvement

  • Pricey
  • App connectivity issues
  • Lack of customer support

Features & Benefits

The Ember Mug features temperature control capability, an LED light indicator, improved battery life, an easy-to-clean design, and auto-sleep function, and a compatible smartphone app.

Maintains the Perfect Temperature

The Ember Mug’s star feature is its ability to maintain a set temperature for an extended period of time (about an hour or a full day if using the charging coaster). This means that you don’t have to worry about throat-scorching or ice-cold coffee again.

Using the Ember Mug, you can get your beverage’s temperature just right, which maximizes your coffee drinking experience. Having your coffee at the right temperature allows you to taste deeper, more potent flavors.

Coffee that’s too hot won’t hit your taste buds the same way. Your tongue won’t be able to detect the divine notes of cocoa and cream because it’ll be too overwhelmed with the burning sensation of too-hot java.

On the flip side, room temperature coffee lacks flavor. This is because, according to taste experts, hot coffee tends to release more aromatic compounds, meaning it has a higher chance of affecting taste. Plus, if you like adding milk to your coffee, the flavor is even more diminished as milk tastes worse at room temperature.

So how does this sophisticated mug maintain your beverage’s temperature? Allow me to explain. Say you have a Kuerig that brings your coffee to an initial temperature of 175 degrees. But maybe that temperature is too hot for you to sip comfortably, so your target temperature is somewhere around 140 degrees.

The Ember Mug doesn’t get rid of that initial heat. Instead, it takes that heat and stores it in the battery. As the mug absorbs the heat, this helps it to cool down the coffee quickly.

When it does cool down to the desired temperature, the mug will sense it and will start to extract the heat from the battery. Therefore, the stored heat helps maintain the coffee’s temperature. This eliminates the need to swap out old coffee for a new cup constantly. No more seemingly countless trips to the kitchen and no more wasted cups of expensive espresso.

The Ember Mug can be a valuable addition to your coffee drinking routine because it helps create that perfect balance between taste and temperature. Set it to the temperature at which you enjoy your coffee the most, and you’ll have yourself a perfect cup o’ joe.

LED Light Indicator

The Ember Mug has a handy LED indicator, which alerts you that your beverage has reached the target temperature. It also tells you when it’s fully charged, has a low battery, is charging, is under/over target temperature, or in pairing mode.

The LED light is an essential feature because it helps you see how the mug works, which enables you to figure out how to respond to specific indicators.

For example, if the LED light is solid red, it means the battery is low, which tells you to connect the charger. Or if it’s solid green, it indicates that it’s fully charged, in which case you’ll disconnect the charger. It lights up solid white when it reaches the target temperature.

But if your beverage is below or above the set temperature, the LED light will blink white. These are just a few of the different LED indicators the Ember Mug has to offer.

Longer Battery Life

The Ember Mug can last almost two hours without needing to be recharged. So you can bring your mug with you as you get things done around the house or at the office. Plus, you can get about two to three cups of coffee out of the Ember Mug’s long-lasting battery.

On the other hand, if you’re sitting for hours at a time, then battery life isn’t as crucial because you can control your coffee’s temperature while the mug is charging.

Easy-to-Clean Design

While the Ember Mug is safe to handwash and is submersible up to one meter in water, you can easily damage the heating element if you don’t take good care when washing it.

That’s why the manufacturers recommend handwashing it and avoiding the dishwasher altogether. So if you’re loyal to your dishwasher, then the Ember Mug’s inability to fully submerge in water might be a dealbreaker for you, especially if you own multiple mugs.

Auto Sleep Function

Another excellent benefit the Ember Mug has to offer is that it can sense when to turn on and off. So when you pour hot liquid into the mug, the auto sleep function allows it to wake up and “activate,” meaning it’s ready to start the process of keeping your coffee at a constant temperature.

But when it’s not in use, it automatically enters sleep mode. Therefore, if the mug doesn’t detect liquid inside or motion when picked up, it will turn off. This function helps extend battery life.

Compatible Smartphone App

While you can set your desired temperature on the Ember Mug, you can also use the Ember app to control the temperature.

The app offers other features as well. For example, it will send you notifications when your beverage reaches the right temperature.

You can also use the Ember app to customize presets for your favorite drinks. If you like to switch things up a bit and have a cappuccino, latte, or tea, you can set the perfect temperatures for these beverages.

So when you fire up the Ember Mug, it will automatically remember the preset temperatures. Plus, you can set a timer for your tea so that it comes out perfectly. The Ember app also offers recommendations for new recipes and helps you track your daily caffeine intake.

If you’re into personalization, then you’re in luck with the Ember Mug. Using the app, you can name your mug whatever you want, switch between °C/°F, change the color of the LED light near the base of your mug, and pair up to six mugs using Bluetooth. So if you do have multiple mugs, you can tell them apart by customizing their LED lights.

However, like any iOS or Android app, the Ember app isn’t perfect. It can have connectivity issues. Out of the blue, it might unpair with your phone, which can be frustrating for many coffee drinkers who enjoy the extra features the app provides.

Luckily, the mug and its compatible app come with regular firmware updates to address connectivity issues and other problems the app might present.

Ember Temperature Control Smart Mug 2, 14 Oz, App-Controlled Heated Coffee Mug with 80 Min Battery...


For the coffee geeks who don’t like to gulp their caffeine all in one go, the Ember Mug just might be what you’ve been dreaming of to maintain taste, freshness, and temperature.

This mug may be one of those luxuries you didn’t think you needed until you started using it. Its excellent battery life, intuitive design, temperature control capabilities, and Bluetooth integration make the Ember Mug all the more irresistible to coffee enthusiasts, despite its hefty price tag.

LEXO Temperature Mug with Luxury Slide Seal Lid

But not everyone has that kind of money to spend on a smart coffee mug. If you’re looking for a more affordable way to keep your coffee warm, you might consider buying a travel mug that can do a similar job, but at a fraction of the cost.

The LEXO Temperature Mug is a stellar alternative. It stores large amounts of energy and uses it to keep your beverages warm for up to eight hours. This high battery capacity is excellent for travel and for visiting places where you won’t have access to a charger.

Mr. Coffee Mug Warmer

On Sale

You can use the Mr. Coffee Mug Warmer to keep your coffee, hot cocoa, or tea at the perfect temperature and you don’t have to break the bank.

Mug warmers are so advantageous because you can use them with different mugs. So if using the same smart mug or buying multiple smart mugs doesn’t appeal to you, then a mug warmer might be what you need.

Ember Travel Mug²

On Sale

Maybe price doesn’t bother you, and you want to stick with the brand. In that case, you can go the extra mile and purchase the Ember Travel Mug², which is convenient for carrying on-the-go. While it has the same core features as the home/office version, the travel mug brings more to the table.

The Ember Travel Mug² can keep your beverage at the ideal temperature for up to 3 hours, comes with a leak-proof lid, features a touch display, and can hold 12 oz. of liquid.

Cauldryn Fyre Mobile 2.0 Smart Mug

Are you looking for something that’s a bit more fancy? Go for the Cauldryn Fyre Mobile 2.0 Smart Mug instead. This powerhouse can boil water, keep your beverage at the optimal temperature for up to 20 hours, and can work with Alexa and Google Assistant.

You can also connect your other devices to the battery’s USB port for portable charging. This mug’s versatility and large battery capacity make it a perfect tool for outdoor activities and emergencies.

Keep Your Coffee Warm, the Easy Way

On Sale

There’s no denying the Ember mug makes it easy to keep your drink hot. Whether you choose the latest and greatest updated Ember mug or an alternative, the priority is preserving the taste and warmth of your favorite brew. Fortunately, there are plenty of excellent options no matter your budget or preference.

Ember Coffee Mug Review: Keep Your Coffee Fresh And Warm For Hours
hawaiian coffe

Having to warm your coffee back-up every 20 minutes can be a pain especially for those who like to sip on their brew. Check out our review of the Ember Mug to keep your coffee warm for hours.

Product In-Stock: InStock

Editor's Rating:
Share the goods

Recommended Reads

Brew like a Barista
from home

The Home Barista Coffee Course 14-lesson video course about brewing consistently amazing coffee at home. Stream or download the entire course to learn how to make coffee as good as your local barista for a fraction of the cost.

Learn more