Ember Mug 2 Review: Is a Heated Mug Worth It for a Reader?
A heated ceramic mug that holds a drink at a set temperature, on battery or all day on its charging coaster. Why it suits people who lose track of time in a book, and the rules that come with it.
Yes, for tea and coffee drinkers who forget their mug mid chapter. It holds a drink between 120 and 145 degrees Fahrenheit and stays hot all day on its coaster [1]. Skip it for someone who wants a big mug or a dishwasher, since this one is 10 oz and hand wash only [1].
By Andrew Pataleta, GiftX founder · Updated October 28, 2026 · Sources
Specs at a glance
| Capacity | 10 oz [1] |
| Temperature range | 120°F to 145°F [1] |
| Default setting | 135°F out of the box [1] |
| Battery | Up to 80 minutes; all day on the charging coaster [1] |
| Controls | Ember app, or remembers the last setting without it [1] |
| Auto sleep | When empty or after 2 hours still [1] |
| Water rating | IPX7, submersible to 1 meter [1] |
| Care | Hand wash only [1] |
Pros and cons
- Keeps tea or coffee at a set temperature instead of going cold mid chapter [1]
- Stays hot all day while it sits on its charging coaster [1]
- Works without the app and remembers the last temperature [1]
- App adds presets for different drinks [1]
- Sleeps on its own when empty or left alone, and wakes when lifted [1]
- IPX7 rated and fully submersible for hand washing [1]
- Scratch-resistant coating on a ceramic mug [1]
Tea that waits for the chapter to end
Readers have a familiar routine: make tea, open the book, look up an hour later to a cold mug. Microwaving it again ruins the taste. The Ember keeps the drink at their chosen temperature while they keep reading.
It suits readers who sit in one spot for long stretches, like a chair with a side table or a desk. Anyone who reads on the move gets less from it, since the long hold time depends on the coaster.
Temperature, presets and auto sleep
The mug holds a drink anywhere between 120°F and 145°F, and ships set to 135°F [1]. Pair it with the Ember app to choose a temperature and save presets, or skip the app entirely; it remembers the last setting without a phone [1].
On battery it lasts up to 80 minutes, and on its redesigned charging coaster it can hold temperature all day [1]. It sleeps when the mug is empty or after 2 hours without movement, and wakes when it senses movement or liquid [1].
The body is ceramic with an updated scratch-resistant coating, rated IPX7 and submersible up to 1 meter for washing [1].
Hand wash only and a short battery
Every wash happens at the sink: hand wash only, no dishwasher [1]. For a household that runs every mug through the machine, that will get old fast.
Battery life is the other catch. Up to 80 minutes off the coaster is fine for one long cup, but readers who wander from room to room will feel it [1]. And at 10 oz it is smaller than many tea mugs, so anyone who brews a big pot may refill more often [1].
A mug for the side table
Set up the coaster at their reading spot and the gift explains itself the first evening. Tuck a box of their favorite tea or a bag of good coffee inside the packaging.
For a full reading corner, pair it with the Brightech Litespan LED Reading Floor Lamp and the Barefoot Dreams CozyChic Throw. For a reader in bed, the Glocusent LED Neck Reading Light and the mug make a smaller, well-matched pair.
FAQ
How long does the Ember Mug 2 stay hot?
Up to 80 minutes on battery, according to the listing, or all day while it sits on the charging coaster [1]. For a reader in one chair, keeping the coaster on the side table means the tea never goes cold. Off the coaster, a single long cup is the realistic expectation before it needs a charge [1]
Do you need the app to use the Ember mug?
No. The mug works without the app and remembers the last temperature used, starting at 135°F out of the box [1]. The Ember app adds a precise temperature setting and custom presets for different drinks. For someone who avoids yet another phone app, the default works fine as it is [1]
Is the Ember Mug 2 dishwasher safe?
No. The listing says hand wash only, though the updated scratch-resistant coating is IPX7 rated and fully submersible up to 1 meter, so it can go under the water in the sink [1]. If the person you are buying for runs everything through the dishwasher, they may find the rule annoying [1]
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Sources and how we checked
- Amazon.com listing for the Ember Mug 2 Temperature Control Smart Mug
Source check: Amazon prices and contents above were checked on October 28, 2026. We did not test these products hands-on. Picks are based on manufacturer specs, Amazon listings and the reasons people actually give these gifts.
As an Amazon Associate, GiftX earns from qualifying purchases. Prices and availability change, so check Amazon for the current price.