Customer Ratings & Reviews

Recently purchased. Battery might last 15 min on the pre-set temp. I really am not interested in putting the ap on my phone. Registerd the mug and put in a support ticket within 24 hrs of receiving this. Yes i did fully charge it. While it works... it is awesome. But frankly the coffee doesn't cool down much in 15min anyway. It has been a few weeks. No response from customer service at ember. I think i might still be in the return window... maybe not. I really liked the coffee staying hot, but a 15 min window and has to get back on the charger isn't worth it to me. I wish it did work for a longer time frame... support is nonexistent from ember.

My Ember mug stopped charging and working after about 12 months. Luckily, I had Total Best Buy Protection, which replaced the product. The only surprise was a $29 deductible, I didn’t realize that was part of the plan. In hindsight, I might’ve tried the manufacturer’s warranty first, since that would’ve likely been free. Still, the replacement process at Best Buy was quick and hassle-free, and paying $29 was much better than buying a new mug at full price.

Best Christmas gift to give anybody. I even have a temperature now I want my coffee now it’s 129 degrees lol. I love this

As advertised keeps coffee at a specific temp that is flexible to what you want, easy to use. Downside is you cannot use regular silverware, it can scratch the coating. I use wooden stirrers and it works fine.

I've had my Ember for about 2 months and use it everyday! As someone who always has to get up and leave their desks, it can take up to 2 hours for drink my coffee. I would normally come back to lukewarm coffee which no one likes. Now my coffee is always at the right temperature. The one drawback is that the battery only lasts about 80 minutes and at which point it stops heating. Not that big of a deal for me as I have the charger right on my desk, but if your charger is not near by that might be an issue.

I loved using this mug for the 18 months it lasted for. It kept my coffee hot for a few hours, longer if I let it sit on the charger by my desk. First the good: When it works, it does a good job at maintaining the configured temperature. It's a great concept, isn't too heavy, and has a decent battery life if you enjoy sipping coffee or tea. The ugly: After 18 months, the ceramic coating began to flake off the lip of the mug. I only ever washed it with a soft bottle brush. Ember claimed the coating was FDA approved so would not harm me if ingested and offered me 20% off of a replacement mug which costs almost as much as the retail packaging. Since I'd rather not like ceramic flakes with my coffee I'm no longer using the mug, and given how expensive the mug is, I'm not considering replacing it. The bad: the software just isn't great. It constantly tries to pair with the mug and requires periodic factory resets to fix pairing issues, causing me to lose my mug customization. Physically powering off the mug and force killing the android app seems to prevent these issues. Ember doesn't have an e-waste recycling program for when the battery hits its end of life, and it's not replaceable. They encouraged me to bring it to Best Buy for recycling instead. When the battery runs out of power, the existing insulation in the mug does a poor job of maintaining temperature as well- I get better thermal performance from a ceramic mug. Conclusion: gets bonus points for a neat idea, but if it's only going to hold up for 18 months, I say stay away. Buy a dishwasher safe sealed insulated mug instead- it may not maintain the temperature with the same precision, but it'll last longer and is significantly less costly.

This is my 3rd mug in about 6 years. I use them heavily so the battery starts to wear out after about 2 years. I've never had any problems with the app, although once I sync and set my preferences, I never use the app again. I don't understand why you would want or need to. I have found the Ember mugs to be exceptionally reliable and have recommended to many family and friends.

Absolutely awesome to keep at the desk. Keeps temperature exactly how i like it. The battery is nice for not placing it directly on the base all the time but nothing else - runs out in 40 minutes or less. Bluetooth connection is iffy at best, but i rarely change settings. Wish it would have the controls on the mug itself.

This mug is wonderful. Every cup of coffee stays at just the right temperature and the cup recharges quickly. Took one star off because it will not stay linked to the Ember app.

Great deal. Keeps coffee hot, ego high aside wife’s white one.

Bought this for my wife as a Christmas gift as she always complains about her coffee getting too cold and loves it hot. Bought this on a whim and it does not disappoint. She has made comments it's one of the best surprise gifts I ever gave her and that she loves it. After ~1 year the charger stopped working due to the pins getting stuck and their customer service sent a new one right away at no cost.

This cup is incredible!! Any serious coffee drinker should get one. Your coffee stays hot for about an hour before it needs to be charged. If a person works, you can connect the plate to electricity from your desk, you can continually have HOT coffee all day.

Love having my coffee always the temp I want! I never have to top off the cup to keep it warm!

I like the cup but it is a bit on the heavy side. The concept is great and it does keep my coffee warm. The coffee comes out of my Kuerig at 156 degrees, which must be about normal but the highest setting for the cup is 145. I don’t think I get the full 90 minutes of battery life with the setting at 145. It’s a great concept, I just wish it could keep my coffee hotter.

Awesome addition for a coffeeholic. Great temperature controls and nice ergonomic design.

I wasn’t sure if I would actually use this but I use it everyday at work!! I set my temperature on the app & I don’t have to worry about my coffee getting cold!

Expensive, but it does exactly what it promises. I was able to buy mine in the BB sale, despite wanting one for months just couldn't justify full price. Super easy to set up and the phone app lets you monitor progress and status. Value for money - depends on your point of view, but keeping your hot drink hot - brilliant!!!

I bought this for my wife 2 months ago. She drinks her coffee rather slow and it always got cold before. Now using the Ember Mug, she easily controls the coffee temperature via her iPhone. Now it never gets cold! She only uses it once a day (morning), so she has never ran out of battery life while drinking. I would recommend the large mug, she usually makes a cappuccino with 2 shots in it and it’s barely big enough. I would have regretted getting the small one.

The Ember mug works well for tea, and there is a setting for green tea, which is what I normally drink in the morning. The mug keeps the tea at the temperature that I prefer all day. Without the charging base, the battery goes out in about an hour, so I keep the base plugged in and the mug keeps the charge all day. One negative is my Android phone does not keep the blue tooth connection.

Easy to use, sleek design and keeps liquids at perfect temp