XMUG · PRODUCT OBSERVATIONS
Current observations. Earlier experiments.
Conditions kept beside the numbers.
Condition-led product evaluation.
Includes the initial warm-up. Reported still operating at 6 h 45 min. The exact shutoff time was not established in the supplied record.
Designer-reported prototype observations. The 6 h 45 min record includes warm-up and ends while the device is still operating. Its starting battery charge was not stated. It does not establish its final shutoff time or an independent certification.
Earlier dated records.
Historical full-charge observation: 500 ml water, approximately 25°C starting temperature, 55°C target, approximately 25°C room, lid off. Around six hours of warmth was recorded. The earlier source explicitly approved presenting this observation with its conditions.
This is a separate earlier experiment. It is not the later 777 ml, lid-on observation.
An earlier engineering record reports approximately 3 h 54 min, with 777 ml, 55°C target, approximately 53–54°C starting water and 25°C room, lid off. The 9 September 2026 log ran from 14:06 to 18:00; the display reached 55°C at 14:22, leaving approximately 3 h 38 min before stop. Initial charge was not stated.
Earlier measured empty weight was 1,085 g; adding 777 ml of water gives an estimated filled weight of approximately 1,862 g. These are dated prototype values; final production weight remains unconfirmed.
Earlier results may describe different prototypes, fills and operating conditions. They are preserved individually, without combining them into a universal runtime or speed claim.
A useful comparison begins with a useful method.
Name the product, model, firmware if relevant and prototype or production status. A current Ember Mug 3 is different from an earlier Mug 2.
Use the same fill, drink, starting temperature, target, room temperature, lid and starting battery state where possible. State any mismatch.
A hot-start holding test answers a different question from warming room-temperature water. Charging and heating also need separate observations.
Report when the drink leaves the target band, when the device stops, or when the test ends. “Still operating” is not the same as total runtime.
Show elapsed time, measurements and conditions. Keep your own conclusions independent, including inconveniences and trade-offs.
Materials and care records.
How to read these records.
Product observations describe specific prototype sessions. Their conditions and endpoints stay beside the figures.
Prototype data is designer-reported unless stated otherwise. Independent test reports and production certifications have not been supplied for this edition. The comparison links official manufacturer information checked on 15 October 2026.
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