How to Use an Ember Coffee Mug
To use an Ember coffee mug, charge it on its coaster, add your drink, and set a temperature in the app or use its saved setting. Hand wash the mug, and use the coaster to keep it warm longer.
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To use an Ember coffee mug, charge it on its coaster, add your drink, and set the temperature in the app or use its saved setting. The Ember Mug 2 holds a chosen temperature for up to 80 minutes on a full charge, or all day on its charging coaster, and it must be hand washed.
The mug can work without the app, so pairing is optional. The app adds temperature selection and presets, while the mug remembers its last-used temperature when you use it on its own.
How do you use an Ember coffee mug?
Charge the mug, fill it with a hot drink, and choose a temperature between 120°F and 145°F. You can set the temperature in the Ember app or use the mug's saved setting.
For a first use, place the mug on its charging coaster. Once charged, add your drink and let the mug manage its temperature.
The default temperature is 135°F.
If you want to keep the drink warm beyond the mug's battery time, leave it on the coaster. That supports all-day temperature maintenance according to Ember's product information.
A heated mug is different from an insulated travel mug or a cup warmer. If you are comparing formats, our guides to best heated coffee mugs and best coffee mugs cover other options.
How do you charge an Ember mug?
Place the mug on its charging coaster to charge it. The coaster can also keep the drink at the selected temperature all day.
For cordless use, Ember Mug 2 has up to 80 minutes of battery life on a full charge. If you'll be sipping over a longer stretch, keep it on the coaster when practical.
Set the coaster on a stable, dry surface and return the mug to it when you are done. The mug's charge and temperature control are part of the system, so a standard cup warmer is not a replacement for its coaster.
How do you set the temperature and pair the app?
Use the Ember app to choose a temperature, customize presets, and pair the mug with your phone. The mug also works without the app and remembers the last temperature you used.
Start with 135°F if you want to use the default setting. If you prefer a different warmth, use the app to choose within the 120°F to 145°F range.
Pairing can be useful if you want a saved setting for a regular drink. If you don't need app controls, you can skip pairing and use the remembered temperature instead.
Does an Ember mug work without the app?
Yes, Ember Mug 2 works without the app. It remembers the last-used temperature, with 135°F as the out-of-box setting.
Use the app when you want to change the setting or customize presets. You don't need to pair the mug just to keep a drink warm.
Why does the Ember mug turn off?
The mug enters sleep mode when it is empty or after 2 hours of inactivity. It wakes when it senses movement or liquid.
This auto-sleep feature helps avoid leaving the mug active when you're finished. If it sleeps while empty, add a drink or move the mug to wake it.
For a desk setup where you want to warm a separate mug, a warmer plate may be a better fit. The House Gem warmer has 3 heat settings and a timer that can be adjusted from 2 to 12 hours.
Use a flat-bottom mug for better heat transfer, keep its base dry, and wait for the plate to cool before cleaning it. This warmer heats the cup from below; it doesn't have Ember's built-in temperature control.
How do you clean an Ember coffee mug?
Hand wash Ember Mug 2 after use. Ember specifies hand washing, even though the mug is IPX7 rated and can be submerged up to 1 meter.
Don't put the mug in the dishwasher. Its water rating does not change the hand-wash care instruction.
Let the mug and charging coaster dry before returning them to your regular setup. For other ways to keep coffee warm, compare a heated travel coffee mug or a USB heated coffee mug.
Can you use an Ember mug with a lid or take it on the go?
Use Ember Mug 2 as a home or office mug, and plan around its battery time if you take it away from the coaster. It can keep a drink warm for up to 80 minutes on a full charge.
For a commute, choose a mug made for carrying if you need a lid or spill resistance. Our guides to a heated coffee mug with a lid, coffee cups to go, and travel coffee mugs help compare those needs.
A thermos is another option when keeping coffee hot during travel matters more than setting an exact drinking temperature. See our coffee thermos guide for that format.
Which coffee warmer suits your routine?
Choose Ember Mug 2 for app-set temperatures and cordless sipping, or a warmer plate if you want to warm a separate mug at your desk. Consider how long you sip, whether you want app controls, and whether you need to carry the drink.
The Ember mug offers a 120°F to 145°F range, a remembered setting without the app, and up to 80 minutes of battery life. Its coaster supports all-day warming, and the mug is hand wash only.
For a separate mug on a desk, the KitchekShop warmer has 4 temperature settings and a 1–12-hour timer. Its maker recommends a flat or thin-bottomed mug for best results.
Pick the Ember if controlling the drink's temperature is the main goal. Pick a warmer plate if you want a heated surface for a compatible cup, and review its care and safety instructions before use.
Frequently asked questions
Do you need the Ember app to use the mug?
No. Ember Mug 2 works without the app and remembers its last-used temperature, which is 135°F out of the box.
Pair the mug with the app if you want to set a temperature, customize presets, or use its other controls.
Keep the mug on its charging coaster when you want it warm beyond its battery time.
How long does an Ember Mug 2 stay warm?
Ember Mug 2 keeps a drink at the set temperature for up to 80 minutes on a full charge, or all day on its charging coaster. Battery life can depend on use, so place the mug on the coaster when you can.
The mug enters sleep mode when empty or after 2 hours of inactivity.
Can you put an Ember mug in the dishwasher?
No. Ember Mug 2 is hand wash only, even though it is IPX7 rated and can be submerged up to 1 meter.
Wash it by hand and avoid treating its water rating as permission to put it in a dishwasher.
Follow Ember's care instructions for the mug and charging coaster.
What temperature should you set on an Ember mug?
Set the temperature to your preference within Ember Mug 2's 120°F to 145°F range. Its default saved setting is 135°F, and the app lets you choose a temperature and save presets.
Start with the default if you are unsure, then adjust the setting to suit your drink.
