Ember

Without using the charging coaster, Ember mugs have a battery life of around 1.5 hours for the 10 oz version and 80 minutes for the 14 oz version, both at a target temperature of around 57°C. It's important to note that the battery in the mug is non-replaceable, so if it fails, the entire mug will need to be replaced.

No, Ember mugs cannot go in a microwave. Heating them in the microwave can pose a fire hazard, as with all electronics and metals, and can also lead to permanent damage to the mug itself.

You can pour hot, or near-boiling, water into Ember mugs. The water will cool down naturally until it reaches your preferred temperature setting. However, when it comes to heating up a cold drink, it’s a bit more nuanced. While you won’t be able to warm up an ice cold beverage, Ember mugs can be used to warm up lukewarm or room temperature drinks, although this process may require manual adjustments using the Ember app.