Is the Ember Mug 2 the right smart mug for you?
The Ember Mug 2 lists at $129.95 for 10 oz and $149.95 for 14 oz, and the 14 oz sells for about $100 to $120 now that the Mug 3 is out. It keeps your drink at a set temperature for about 80 to 90 minutes off its coaster, or all day on it, but it is hand wash only. Tick what you do and see which side you are on.
What you get for about $100-$120
| Sizes | 10 oz (295 ml) and 14 oz (414 ml) |
|---|---|
| Temperature range | 120°F to 145°F (50°C to 62.5°C) |
| Default temperature | 135°F without the app |
| Battery | About 90 min (10 oz) or 80 min (14 oz) at 135°F; all day on the coaster |
| Charging | About 2 to 3 hours on the coaster from empty |
| Controls | Ember app for iOS and Android; LED shows when the drink is ready |
| Water rating | IPX7, submersible to 1 m |
| Cleaning | Hand wash only |
| Weight | 410 g (10 oz), 457 g (14 oz) |
| Size | 10 oz: 109 mm wide with handle, 106 mm tall; 14 oz: 114 mm wide, 117 mm tall |
| In the box | Mug, charging coaster, power adapter |
| Extra coaster | $39.95 from Ember |
Pros and cons
Pros
- Holds a set temperature between 120°F and 145°F
- All-day warmth on the included coaster
- Often $30 to $50 under list price now
- Works at 135°F without the app
- Fully submersible for easier hand washing
Cons
- Hand wash only
- About 80 to 90 minutes off the coaster
- No lid included
- Custom temperatures need the app
- Expensive for a mug
Ember Mug 2 vs Ember Mug 3 vs Nextmug
Ember's new dishwasher-safe model and the best-known app-free rival.
| Ember Mug 2 14 oz | Ember Mug 3 14 oz | Nextmug 14 oz | |
|---|---|---|---|
| Price | $149.95 list, about $100-$120 now | $149.95 | $129.95 list, often $99.95 |
| Temperature | 120-145°F, set in the app | Five presets 125-145°F on the mug, or the app | Warm, Hot, Piping on the mug |
| Battery off coaster | About 80 min | About 80 min, 3+ hrs with lid | Up to 1.5 hrs at 135°F lid off |
| Lid | Sold separately | Sliding lid included | Lid included |
| Dishwasher | No, hand wash | Top rack, low temperature cycle | Not stated in the listings we read |
| App | Required for custom temps | Optional | None |
Pick the Mug 2 for the lowest Ember price if you don't mind hand washing. Pick the Mug 3 for dishwasher cleaning, on-mug buttons and a lid. Pick the Nextmug if you never want an app.
Before you buy
Pour it hot
Ember recommends pouring at 165°F or more. The mug keeps heat in; it is slow to heat a lukewarm drink.
Pick the size for your pour
The 10 oz runs about 10 minutes longer on battery. The 14 oz fits a full mug of coffee.
Watch the price
With the Mug 3 out, the Mug 2 is discounted. On October 7 Prime Day it fell to $76.50 (10 oz) and $100 (14 oz).
Check which generation you get
Mug 2 and Mug 3 listings look alike. Only the Mug 3 is dishwasher safe and has buttons on the mug.
What the Mug 2 gives up
The Mug 2 is now the older model, which is why it is cheaper. These are the trade-offs.
Hand wash only
The Mug 2 can be submerged but not put in the dishwasher. The Mug 3 is the first Ember mug that is top-rack dishwasher safe.
Short battery off the coaster
About 80 to 90 minutes at 135°F. Ember says a cold room, a cooler pour or milk can cut that a lot.
App for custom temperatures
Out of the box it holds 135°F. Picking another temperature needs the Ember app. The Mug 3 adds buttons on the mug.
No lid in the box
The Mug 3 includes a sliding lid. For the Mug 2 a lid is a separate purchase.
Tops out at 145°F
You can't set it hotter, and it does nothing for cold drinks.
10 oz, 14 oz, or the Mug 3?
Mug 2, 10 oz
For espresso drinks and smaller cups, with the longest battery.
Mug 2, 14 oz
The usual pick for a full mug of coffee or tea.
Mug 3, 14 oz
For dishwasher cleaning, on-mug controls and an included lid.
On Amazon the 14 oz Mug 2 was $119.99 (list $149.95) in mid-October, and Target had some colours at $99.99. During October 6-7 Prime Day the 10 oz dropped to $76.50 and the 14 oz to $100. The Mug 3 reached Amazon in mid-October at full price. Prices move, so check today's price before you buy.
Prices checked October 19, 2026.
See today's price on AmazonCommon questions
How long does the Ember Mug 2 battery last?
About 90 minutes for the 10 oz and 80 minutes for the 14 oz at 135°F, or all day on the charging coaster.
Is the Ember Mug 2 dishwasher safe?
No. It is hand wash only, though it can be submerged up to 1 meter. The Mug 3 is top-rack dishwasher safe.
Can you use the Ember Mug 2 without the app?
Yes. Without a phone it holds a default 135°F. You need the app to pick another temperature.
What is the temperature range of the Ember Mug 2?
120°F to 145°F (50°C to 62.5°C).
What is the difference between Ember Mug 2 and Mug 3?
The Mug 3 is top-rack dishwasher safe, has five temperature presets on the mug and includes a sliding lid. Battery life without the lid is the same.
How long does the Ember Mug 2 take to charge?
About 2 to 3 hours on the coaster from an empty battery.
Can I use the Ember Mug 2 in the car?
Ember advises against it because the mug has no leak-proof lid, and suggests the Ember Travel Mug instead.
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