The Ember Mug 2 holds your coffee at an exact temperature for over an hour, a luxury that comes with a short battery and a $130 price tag.

Product Image: RelyMedia
7.4
KADS SCORE
Quick Take
The Ember Mug 2 is a 10 ounce smart mug that actively heats your coffee to a precise temperature between 120 and 145 degrees Fahrenheit and holds it there. Owners call the experience addictive: the last sip tastes like the first. The tradeoff is real though, with up to 1.5 hours of battery off the coaster, hand wash only care, and a $129.95 price that buys a lot of regular mugs.
What We Like
- Holds coffee or tea at an exact chosen temperature between 120 and 145 degrees
- App control with presets, notifications, and temperature memory
- Sleek ceramic coated design that looks like a normal mug
- Auto sleep wakes on pour and powers down when empty
- IPX7 rated and safe to submerge for easy hand washing
What We Don’t Like
- Battery lasts about 1.5 hours off the coaster, so desk use means staying docked
- Hand wash only with no dishwasher option
- Heavy for its size at over 400 grams before liquid
- Expensive at $129.95 for a single 10 ounce mug
Product Details
Full Review
Quality
The Mug 2 pairs a stainless steel body with a ceramic coating and embedded heating elements, and owners describe the build as premium and reassuringly solid. The smart LED glows when your drink hits target temperature, and precision sensors handle liquid detection and auto sleep reliably. Reviewers note the coating can show wear with heavy use, and the mug is noticeably heavy for 10 ounces because of the battery and electronics. Overall the fit and finish justify the luxury positioning even if the heft takes getting used to.
Value
This is the hardest sell of the four: $129.95 for a mug that needs charging, versus a $20 insulated mug that keeps coffee warm passively for a few hours. Owners who love it argue the difference is qualitative: passive insulation decays from the first minute while Ember holds a chosen temperature steady. If you nurse one cup for an hour at your desk, the experience earns the price. If you drink coffee in twenty minutes, it never will.
Who Should Buy It
Desk bound coffee and tea drinkers who sip slowly and want every mouthful at the ideal temperature.
Who Should Skip It
Fast drinkers, travelers who need a sealed mug, and anyone unwilling to hand wash or keep a charging coaster on the desk.
FINAL VERDICT
The Ember Mug 2 delivers exactly what it promises: coffee held at your perfect temperature until the last sip. Short battery life, hand wash only care, and the steep price make it a luxury rather than a necessity. For the right slow sipper it is worth every cent; for everyone else it is an easy pass.
7.4 / 10
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