Nextmug - Temperature-Controlled, Self-Heating Coffee Mug (Black - 14 oz.)

I purchased a 14oz Nextmug as a gift for my nearly 100-year-old aunt, who absolutely loves very hot coffee. When we ran into some confusion and performance issues with the original mug, I reached out to Nextmug customer service—and I cannot say enough good things about the experience. From the very first response, their team (especially Corey) was kind, patient, knowledgeable, and incredibly thorough. They took the time to understand how the mug was being used, clearly explained how the temperature settings and battery work, and offered practical tips to improve performance. When it became clear that a replacement would be best, they immediately sent a brand-new Slate Blue Nextmug with a new slider lid, along with clear instructions and a prepaid return label for the old one. The replacement mug works beautifully. It keeps the coffee hot just the way my aunt likes it, and she was delighted with the new color. Most importantly, it brought back one of her simple daily pleasures—and at her age, that means everything. It’s rare these days to find a company that combines innovative products with such genuine care, warmth, and fast follow-through. Nextmug didn’t just fix a product issue; they treated us like family. I would absolutely recommend Nextmug, not only for the quality of their mugs, but for the outstanding people standing behind them. —A very grateful customer

I purchased the Nextmug as a gift for the woman in my life to keep her hot drinks at a consistent temperature during the workday, especially when I’m not able to finish a cup right away. Intended use: Maintaining a steady drinking temperature for coffee and tea over extended periods. Design and build quality: The mug feels solid and well-made, with a clean, simple design. The charging coaster is compact and easy to place on a desk or counter. The mug sits securely on the base and begins heating automatically when placed on it. Temperature performance: The temperature control works as expected, keeping beverages warm without overheating. The preset temperature levels are straightforward to use, and the mug maintains a consistent temperature as long as it remains on the charging base. Ease of use: Controls are simple and intuitive. There’s no app required, which makes daily use easier. The mug is also easy to clean, as long as it’s kept out of the dishwasher, per the manufacturer’s instructions. Limitations: The mug is able to maintain temperature while off of the charging coaster, but only for about 2-4 hours depending on the temperature setting you'll be keeping it on, so it’s best suited for desk or countertop use rather than travel. It also requires a bit of care when cleaning due to the built-in electronics suck as making sure it's dry before placing it on the charger. Overall experience: In regular use, the Nextmug has been reliable and does what it’s designed to do—keeping drinks at a comfortable temperature for longer than a standard mug. Conclusion: This is a practical option for anyone who wants consistent temperature control for hot beverages while working at a desk or spending time at home.

*Update* - I've had this mug now officially 2 years. It was starting to lose some battery life and I had a few issues with it. I contacted Nextmug to get some advice and assistance and after answering a few questions they are sending me a replacement mug. Their customer service is stellar. Their product is fantastic, but if anything goes wrong, it seems they will do whatever they can to make it right. Best purchase I've ever made -and I would make it again. I love my nextmug - best bug like this for the price by far. Highly recommend. Now that I have used this mug for 6 months, I feel I can provide a completely honest, inclusive review. I had been using Ember mugs for several years and when my latest Ember stopped working, I wasn’t willing to shell out the big bucks on another and began searching for alternatives. I found Nextmug and decided to give it a shot. Nextmug vs. Ember Mug: A Comprehensive Comparison 1. **App-Free Experience**: Unlike the Ember Mug, which relies heavily on its companion app for customization and temperature control, the Nextmug offers a hassle-free experience with no app dependency. This simplicity appeals to me and I much prefer straightforward functionality without the need for additional software. 2. **Extended Battery Life**: One of the standout features of the Nextmug is its impressive battery life, surpassing that of the Ember Mug. With longer intervals between charges, I find I can enjoy my coffee throughout the day without constantly worrying about recharging. 3. **Convenient Lid Design**: The inclusion of a handy lid adds practicality to the Nextmug, providing spill-proof protection and heat retention capabilities. This feature enhances my experience by offering added convenience and functionality. 4. **Temperature Control**: While both mugs excel in maintaining beverage temperature, the Nextmug offers competitive performance without the need for constant app monitoring. Its intuitive design allows me to enjoy my coffee at my preferred temperature without any fuss. I find I don’t need the ability to pick a super specific temperature, the 3 settings are adequate for finding my perfect temperature preference. 5. **Design and Build Quality**: Both mugs exhibit sleek and modern designs, but the Nextmug's durable construction and thoughtful design elements, such as the ergonomic grip and spill-resistant lid, contribute to its overall appeal. In conclusion, the Nextmug emerges as a commendable alternative to the Ember Mug, offering a seamless user experience with its app-free operation, extended battery life, and convenient lid design. The Nextmug delivers on both functionality and convenience, making it a worthy investment for anyone in search of a smart beverage companion. And with a price that is quite reasonable compared to my ember, it’s worth the investment in my opinion.

I'm not sure what aspect of my being this comes from, but I was finding myself constantly grabbing a cold mug when I finally remembered it was there. I'd make a pot of tea, make my cup, intentionally let it cool, and one way or another it was too cool / cold by the time I got to it. I can't say that I've been monitoring how long it took for the mug to cool down, but it always seemed too quick. I was already looking for a reason to get a new mug as the rounder handle resulted in holding it in a painful way and it was frankly getting heavier to my hands as well (being ceramic). So I had a few reasons to look anyway. And with that in mind, I decided to look for something that might help with those issues or at the least, not let the cup's contents drop below a certain temperature Long enough for me to get around to drinking it, while also having a more comfortable weight and handle. Initially, I thought about those coasters that heat up, but felt that that'd be too much of a burn / fire hazard and likely not able to control the temperature as well. Seeing as how I didn't know what temperature I was waiting for it to cool down too, I knew that I'd want something with a measured setting. I was also looking for something that could heat up a cold cup to the desired temperature. When I first saw this listing, I was taken back by the price, but not so much that it kept me from looking into it. Especially since I have a habit of deciding on things that one way or another tend to push the budget. I looked at the various aspects of the design and saw that it was basically self-contained, so there was a little to no chance of being hurt by the mug (unless I spilled the contents on the upper two settings). Being able to choose from a known selection of temperatures was a must on this purchase. I also liked that the handle appeared (correctly) to be large enough to fit my average sized, closed grip. While I've not weighed it, it definitely feels lighter than a comparably sized ceramic. Most of its weight is, of course, the battery at the bottom. I was a bit bummed that the charger was a barrel plug as that doesn't allow me to just grab the nearest USB-C cord from my station (where I sit). That said, if it Did have USB charging, then it would have only been to the base anyway, so that would be a moot point since it would likely never get unplugged unless moved. While I don't know how much my old mug held, it's quite apparent that this is likely a few ounces less, but it's also exactly 1/3rd of the 1L pot when brewed vs ~2.5 fills with my old mug. I'm sure I'll get used to the difference eventually. Now, when evaluating the performance of this, it became apparent that I was running into my desired functionality vs its design. It has become obvious that this is designed to start with a hot liquid and keep it at the chosen temperature until empty or the battery runs out. It does that quite well, but I can't say how long the battery actually lasts for sure because I lose track of time too easy. So when I say that it 'feels' like it's losing power (not temperature) quicker than advertised, I can't quantify that statement, but it 'feels' closer to 2-2.5 hrs vs 4 hrs (lid on). I can say that I figured out that my comfortable temperature is the lowest setting and that the middle temperature more closely resembles my freshly brewed pot. The charging time feels like forever, but definitely a couple hours from depleted. Now when trying to see how it does with 'heating from cold', that definitely seemed to drain the battery much faster while also taking a long time. I even tried setting it to that middle choice and then turning it back down, but that still drained the battery rather quickly. So if That is how you want to use it, then leave it on the charger until it's hot again (and expect to wait a bit). I did have to stop myself from walking it over to the microwave the first few times until I got myself better trained with how it's designed. Because of this, as much as I hate adding to an already pretty penny, I chose to purchase a 2nd base to sit where I eat / drink. I thought about moving the original base, but then I realized that it was better to leave that there for when I've cleaned the mug (default storage location and all that). What improvements would I like to see? 1) Make a slightly larger (16oz?) mug, but have it be taller so that the base and lids don't change. 2) Source a higher density battery if possible. 3) Increase the speed at which it warms up (if feasible). 4) Add a little more texture to the handle / housing as it is metal smooth and slides a bit easy in the hands. 5) Offer a closeable lid as that should prevent spills and likely assist in keeping it warmer longer.

I bought this as a Christmas gift for my mom, and she absolutely loves it. It’s very easy to use, heats up quickly, and keeps coffee at the perfect temperature for a long time. The temperature control works well, and it’s so nice not having to reheat coffee over and over again. It feels well made and does exactly what it’s supposed to do. This made a great gift, and I would definitely buy it again. Highly recommend!

This was a gift and I was very excited to see how it worked. If you like your coffee/tea/hot drink to stay warm/hot/piping and finish your drink within 2-4 hours then you will likely be happy. But if you are like me and can often nurse a cup of coffee all day then you are better off with an insulated stainless steel thermos (love my Zojirushi) for your hot drink. I just slowly sip my coffee or tea ALL day long. So after a few hours with this mug and the charge is depleted the drink is no longer staying warm/hot - then what do I do? I have to pour it into another mug that is microwavable as you can't microwave this mug. Then pour it back into this mug? Nope - because the mug needs to be recharged which takes awhile. Just doesn't work for how I drink my coffee/tea. The only way this will work is if I move the charging base to where I am using the mug so that I place the mug on the charger when not actively drinking. In this case the mug stays charged and the liquid stays hot indefinitely. BUT my main complaint is that the size (14 oz) is just plain false and at least deceiving. I always make a 12oz cup of coffee and I can barely fit 12 oz in this mug - it goes to the brim - and that is without the lid on. With the lid (which you really must to conserve heat) it is more like a 10-11oz mug and no where near 14oz. Also is it annoying that the mug seems good sized but the bottom inch is all of the heating/electronics. You actually notice this oddness when you get to the bottom of your drink and tilt to sip but there is nothing left though it feels like you should still have some left. So my final comment is to SAVE YOUR orig box if you want to return. I thought - no problem I can just return this as Amazon's return policy is so great and I have never had a problem. It was a gift and after opening I did not keep the Nextmug box that the mug came in - I just kept the instructions. When I went to return is was going to be $17+ shipping as I answered the return questions honestly that I did not have the original box. When I went back to see if that was the issue and selected that I had the original box, return shipping was free. Well since I don't really have the original box I am out of luck and not happy.

I have an Ember and Nextmug. I’ve had the Ember over two years and the base broke. One of the tiny little spring-loaded nibs lost its springiness. A weakness in design if you ask me. But, the Nextmug uses the same little nibs. Their design is a little stronger in that one nib is right in the center of the cup-base. But still, a weakness in design that you cannot (and I stress CANNOT) get the baseplate wet. I’m not sure what happened to my ember, but I ended up making a solid nib out of solder for the one that lost its spring. It’s holding, but I’m not confident in it. I’m guessing at some point, the Nextmug base will do the same thing. That aside, the Nextmug is superior for a few reasons. One, it has a definitive on and off option. Where the Ember has a sensor to know when you’ve added liquid, it’s hit or miss. The Ember on/off switch is also inconveniently located underneath the cup. And it also is hit or miss. Where it gives you a tactile response that you’ve clicked it, it’s unclear most of the time what you’ve actually done. Sometimes a light comes on, sometimes not. Sometimes it’s blinking red, sometimes it’s solid red, green, white, blinking… The Nextmug on/off is located on the side (superior) and it’s easy to know when the cup is off (no lights) and which option you are picking. The Ember app? Garbage. It is unreliable. If it works, it’s fantastic. The trouble is that it rarely connects no matter what you do. When I went shopping for a replacement, I specifically looked for cups that did not have an app. “App” means IT developers, means more cost, and generally for a product like this, average developers (I mean, it’s a cup not an air-traffic control system). Plus, the Bluetooth chips they must use have to be the bottom of the barrel (aka, unreliable). Therefore, all the features that the app provided (heating options most notably), were useless to me. The Ember cup size (10 oz) was a little small. There’s now a 14 oz option, but the train had left the station! The Ember on/off button on the bottom of the cup, again, is a nuisance. And here’s something I didn’t think I would care for… the Nextmug lid! I have to say, it’s great! It helps keep the coffee warmer without using as much energy (longer charge when it’s away from the base). Also, it nearly erases evaporation. And, I’m not 100% sure, but the coffee seems to be much less bitter because of it. Maybe my imagination, but the coffee taste better from the Nextmug cup. Plus, no spills (or at least, less chance of splashing). The Nextmug light indicators where intuitive and having a button for “warm, hot, and piping” versus an app… Way to go Nextmug! Between the Nextmug and Ember, it was an easy decision for me. I’m still concerned about the little nibs losing their springiness… But, there you have it.

I am IMPRESSED with this mug. My precious ember mug bit the dust, and I needed a replacement. This was a more affordable and also stylish option, so I decided to take a chance. I have no regrets! I use it every single morning. It keeps my coffee hotter for longer than the Ember did and I like the feel of it better as well. Also a total lifesaver for a mama to a baby and toddler. I can actually finish my coffee without having to microwave it 73 times.