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

I LOVE having a mug that keeps my coffee warm until the last drop. This is great for me and I use it every day. My only issue is I should have opted for the larger model. I would love to have that model and may give my mug to my wife and order the bigger mug. It works perfectly and I have exactly NO problems with it. I poor my hot coffee in the mug - switch it on and enjoy. I have found as I get near the bottom of the cup I have to switch it off because the element is pretty powerful and even too hot as I get to the last swallow! Love it!

Wow this cup is AMAZING? I have been looking for a cup that can self heat for a long time. Sadly, I am in the hospital frequently because I have lupus. Last year I was in the hospital 95 days. 😭 I really enjoy having a cup of hot tea but when I am in the hospital, I can’t leave my room because I’m usually REALLY sick. After the cafeteria closes, I can’t get a cup of hot tea in the evening (when I want it the most). My only option has been for a nurse to microwave a styrofoam cup in a microwave which automatically makes me not even want the cup of hot water. I have been looking for a long time to find a travel mug that could be my “hospital mug”. I’ve tried several options all of which failed. I came across this cup and thought it looked interesting and the reviews were really good. My first thought was “a $100 coffe cup ??? What has this first world self indulgent country come to??? Holy fart blossom that’s alot of money!!” However, 95 days of my life in a hospital SUCKS! And during that time there is very little joy or peace. So I thought to myself “why are you spending all this time lonely and miserable and for $100 you could enjoy a cup of tea and it would bring you so much joy and comfort”. My favorite color is pink and I was so pleased that the cup came in a rose color, which is a lovely shade of rose/pink. The cup is amazing. It has a good grip. The round shape is comfortable to hold in your hands. The handle is the right grip and is comfortable to wrap your fingers around. The weight of the mug feels solid but not heavy. It has the right weight to feel like you are holding a comfort mug. It’s compact enough with the charging base to easily stick in a small hospital travel bag. The texture of the cup is calming and the cup is easy to wash well in a hotel or hospital sink. If I could change anything about the mug it would be that it was just a smidge talker so that the charging cord could travel inside the mug with the lid on it. It just almost will close but not completely. That’s the only rhino I wish was different just because when I travel around I don’t want to lose one of the parts and it would maximum travel efficiency. That’s a small thing in comparison to the quality of this mug.Also, I was curious if I started with cold water (like I will have to do in a hospital), could the cup do more than just keep tea warm but rather could I start with a cup of cold water and get the water hot enough to steep the tea. The answer is YES indeed you can. I did an experiment at home with a cup of refrigerated water and turned the mug setting onto “piping”. I put a kitchen thermometer in the water to measure the temperature of the water when it started and then to see how long it took and how warm the water would get without the help of starting with hot water. It worked! It was a little bit slow (maybe 30 mins or so). But it did the job which is really amazing for such a small “device” of this sort. The water started at 43 degrees and it heated up to 140 degrees in around 35ish minutes. It did steep the tea perfectly! Wahoo.I loved my cup so much that I gave my first mug to a very special friend who works outdoors a lot farming in the north east where it is often very cold. She enjoys a cup of hot coffee to warm her frozen body while she is working. She is young and would have never bought herself an expensive coffee cup. However, she absolute loves the cup. Which means this is a very nice special gift to give someone who really loves warm drinks.Today I am ordering my replacement mug for my hospital bag.This is a very cool cup that works and I think it is absolutely worth spending $100 for the comfort and luxury this mug brings to life enjoyment.My story of my struggle with lupus is on YouTube if you search “Ballerina With Lupus”. It can give you some idea of what my hospital life is like and also my determination to fight to stay alive.God bless you if you have read to the end of this crazy long review. LolMelly

I really love the mug — especially the app-free approach. But there’s one issue that feels oddly dismissive of the user experience.The mug is designed to keep your coffee piping hot for extended periods. Great in theory. But here’s the problem: when coffee stays hot too long, it starts to taste awful — mostly due to evaporation.So, what’s the obvious fix? Just put the lid on. Right?Well… not quite. The included lid has a permanently open drinking hole — meaning heat and vapor constantly escape. So if you use the mug and lid as designed, your coffee turns bitter in 10–15 minutes.Want to fix that? You’ll need to go online, hunt down a compatible closeable lid, spend another $20, and generate more packaging waste — all to make the mug function as it should have from the start.Bottom line: The included lid needs to be closeable. Without that, it actively undermines the mug’s main feature. I wanted to bump the review down to 4 stars over this, but that just felt petty.Anyone want a non-closeable plastic lid with no practical use? Didn’t think so. And so it now lives in my junk drawer….

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.