“Is the battery replaceable? If yes, how much does it cost? How long will the battery keep the coffee hot? Assuming that it has a temperature controller, what is the range? If the battery is dead, can the cup be microwaved?”

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• I have had it keep my coffee hot for 1 hour at 130 degrees. Be wary though lattes will develop a skin on top die to the heat.

  Answered by Keurig 4 years ago

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• Hi, The Ember Mug 2 has a rechargeable battery and includes a charging coaster. The Ember Mug 2 lasts up to 90 minutes on a single charge and the Travel Mug 2 lasts up to 3 hours on a single charge! The cup has a battery and should NOT be microwaved. Best, The Ember Team

  Answered by Ember, Inc. 5 years ago

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