- How long does the Ember mug keep coffee hot on battery?
- About 80 minutes at a mid-range temperature, less at the highest settings. On the charging coaster it holds temperature indefinitely.
- Is the Ember mug dishwasher safe?
- No. Ember says the mug must be hand-washed; the electronics and battery are sealed in the base.
- What temperature range can I set?
- Roughly 120°F to 145°F through the Ember app, with presets you can save for coffee or tea.
- Does it work without the app?
- Yes, it defaults to a preset temperature and turns on when you pour. The app is needed to change the temperature.
- Is the 14 oz version worth it over the 10 oz?
- If you drink large coffees, yes; the 14 oz holds a full mug and has a handle. The 10 oz is smaller and has no handle.
- When is the best time to buy it?
- It rarely drops far below list price; watch for holiday sales at department stores.
- Where is the Ember Smart Mug 14 oz Slate Black cheapest?
- At Kohl's, for $139.95, as of our latest check.