Ember Temperature Control Stainless Steel 10 Oz Smart Mug
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Our take on the Ember Temperature Control Stainless Steel 10 Oz Smart Mug
The Ember Smart Mug is a 10 oz stainless steel mug with a built-in battery and heating element that holds your drink at a set temperature you choose in the Ember app. It keeps coffee or tea at that temperature for roughly an hour to an hour and a half on battery, and all day when it sits on its charging coaster. It suits desk workers, slow sippers and anyone tired of reheating cold coffee. Against a plain insulated tumbler, which only slows heat loss, it actively reheats; against cheaper heated coasters, it works untethered. Owners like the steady temperature but often mention the battery life and the need to hand wash it.
- Holds a chosen temperature rather than just slowing heat loss
- Works on battery away from the charging coaster
- App sets exact temperature and sends notifications
- Stainless steel body feels sturdy
- Doubles as a normal mug on its coaster
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What reviewers say
Owners value keeping coffee at a steady temperature through a long morning and like the app control. Common complaints are short battery life, hand washing, and occasional pairing or charging hiccups.
- Battery lifeCriticisedOwners say the battery runs down in about an hour to an hour and a half, less than a long workday.
- Temperature controlPraisedReviewers like that the mug holds an exact set temperature instead of slowly cooling.
- AppMixedThe app makes temperature changes easy, but some find pairing and reconnecting unreliable.
Questions and answers
- How long does the Ember mug keep a drink hot on battery?
- Roughly an hour to an hour and a half at a typical drinking temperature, depending on the set temperature and room conditions. On the charging coaster it holds temperature indefinitely.
- Can I put the Ember mug in the dishwasher?
- No. Ember says the mug is hand wash only because of the electronics and battery in the base. The charging coaster should be wiped clean, not washed.
- Does it need a phone to work?
- It works on its charging coaster out of the box at a default temperature. The Ember app is needed to set a precise temperature, change presets and get notifications.
- Is it only for hot drinks?
- The mug is built for hot drinks and holds a set warm temperature. It is not a cooler and will not chill a cold drink.
- How does it compare with an insulated tumbler?
- An insulated tumbler only slows heat loss, so the drink still cools. The Ember actively reheats to hold a set temperature, but it costs more, is heavier and needs charging.
- What is in the box?
- The mug and its charging coaster, plus a quick start guide. A power adapter for the coaster is included.
