If you are keeping your beverage hot while using the coaster, it can maintain your perfect temperature all day!* When the Ember is placed on the charging coaster with hot liquids inside, it will maintain your current set temperature, while maintaining the current battery level. Once empty, the Ember will charge normally.
Please note, you may see the battery percentage drop slightly in between sips.
* The Ember has a 2 hour inactivity auto shutoff feature. Picking the Ember up to move the accelerometer will reset the 2 hour timer.