The charging pad can keep the mug charged while you’re sitting at your desk, and also charge up the battery for when it’s time to go. Instead of sitting on a charging saucer, Muggo has a removable battery that magnetically attaches to a charging pad. (The tumbler also displays the current temperature at all times.) The spring-loaded lid pops up and down with a single press, so it’s easy to drink from on the go, too. Time in temperature range: 1 hour, 15 minutesĪlthough it doesn’t have an app like Ember, the Muggo tumbler is very easy to control, as you can adjust the temperature in five-degree intervals from 95 to 150 degrees by pressing right on the LED display on the tumbler itself. Although I did not test it, Ember also makes a travel tumbler with similar features, if that’s more appealing to you. The only downside is there’s no USB charger. TL DR: Ember is a sleek, app-controlled mug that will keep your beverage at a set temperature anywhere from 120 to 145 degrees and it’s mostly accurate based on my testing. My slightly more scientific testing proved it be even more effective: It stayed within seven degrees of the set temperature for 95 minutes. The saucer charger has to be plugged into an actual outlet which isn’t always the most convenient.ĭuring casual use I set the Ember mug to 140 degrees (which, thanks to all these temperature measuring gadgets, I recently discovered is my preferred tea temperature) and found that it stayed around there until I finished my tea around an hour later. The only not-so-modern thing about Ember is that there’s no USB charging cord. You’ll also get notifications once the mug has reached your desired temperature and when it needs to be charged. That may sound gimmicky but it is actually pretty useful: On the app, you can set your desired temperature (anywhere from 120 to 145 degrees in single-degree intervals, the most specific control of any mug) and view the current temperature of your drink. It’s the only warming mug I tested that uses an app, connected via Bluetooth. In all-white with a matching saucer charger (it’s also available in black and metallic copper), the Ember mug is the most sleek and streamlined of the bunch. Time in temperature range: 1 hour, 35 minutes By comparison, a regular mug only stayed in that exact range for around five minutes I’ve also noted how long each mug held a temperature from 125 to 135 degrees.

All of the mugs but the Ember have a lid, so I tested them without the lids on to control for that. The product description explains it should stay at around 140 degrees “for hours.” To compare them all accurately, I set the Ember and Muggo to 130 degrees. The Burnout also doesn’t allow for temperature control, but that’s not a surprise, because it’s not electric.

Two of the mugs I tested, Ember and Muggo, allow for precise temperature control, while the OHOM Kopi is designed to stay at 130-degrees. To add in a “control” factor, I also tested a regular ceramic mug as well as a stainless-steel Yeti tumbler. Then, after a few days of trying each, I moved to a slightly more scientific testing method, pouring boiling water into each mug and then checking the temperature with a meat thermometer at five-minute intervals for two hours. At this point, I am ready to drink it, not wait even longer.Īt first, I used them casually for my daily tea, just to get a sense of how they worked and how well they maintained their temperatures. While I could go through the process of boiling more water, that would also involve waiting for it - and waiting for it to cool back down.

By then, my once-steaming mug is usually closer to lukewarm. Although the first step in my work-from-home morning routine is pouring myself a cup of tea, I don’t often get around to drinking that tea until I’ve made breakfast, checked emails, responded to any urgent emails, and gotten distracted chatting with co-workers on Slack.

Ember mug 2 copper edition