Amazon.com.au:Customer reviews: (Black) - VOBAGA Coffee Mug Warmer & Cup Warmer for Office Desk Use, 20Watt Electric Beverage Warmer With Three Adjustable Temperature (Up to 149 /65 ), Electric Coffee Warmer Plate For Cocoa Tea Water Milk Soup
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I have both the Mr.Coffee mug warmer and now the Vobega warmer. I like my coffee as hot as possible, and while the Mr.Coffee does a good job at keeping things fairly warm, I wanted to try something that would hopefully be much hotter. However, the Vobega keeps my coffee at just about the same temperature at the Mr.Coffee model. Why? I decided to measure the heating elements with a hand-held laser thermometer (Vobega at max), just to see any differences. The Mr.Coffee element here measured 96C (205F) at the centre, and averaged at 86C (187F) around the edge. The Vobega measured 122C (251F) at the centre, and 85C (185F) around the edge. So, while being 26C (79F) hotter in the centre, why does the Vobega not heat my coffee more than the Mr.Coffee? I can only assume it's because in my case, the bottom of the mugs here are not flat, they only contact the heating plate around the edge - most of the centre is raised slightly (slightly less than 1/8"). That gap, while small, must be enough to negate most of the temp difference in the middle, and the mug must draw most of its heat from the outer edge that contacts the plate. The edges of the heating elements being the same temperature for both models, the coffee temp ends up about the same for both models. My suggestion to get the most out of the Vobega would be to only use mugs with perfectly flat bottoms....
And that misprint of the word 'Warning' in the middle of the Vobega heating plate (says "Waring") could be corrected.
I think in part I'm having problems finding the perfect cup to use with the warming plate but it doesn't keep my beverage nearly as warm as I would like it to. I think it helps somewhat, but an insulated cup still does a much better job of keeping my coffee hot. Ideally they should ship a cup with it, specifically designed for use with it.
J'aurais pensé que ça garderait le café très chaud mais non. Vaut mieux une tasse thermos à café ou un thermos à café(grand). Là on peut dire que notre café reste très chaud jusqu'à la dernière goutte. Moins esthétique mais plus performant.
I have no other brands to compare this with, so all brands may be the same in this regard: make sure your beverage is hot to begin with, and put the warmer on its highest setting. If your mug or other container is tall, you'll want to stir the beverage up from the bottom to distribute heat if it's been sitting awhile. I also keep a lid on my mug while it's sitting on the warmer to retain heat better.
Having said all of that, the warmer works just fine. I bought two ... one for home and one for my office ... to avoid having to continually reheat my beverage. It does the job, and I use them both all the time. What I especially like about this warmer (specifically what some people DIDN'T like!) is that it doesn't have an automatic shut-off. I want it turned on until I decide it should be turned off. I'm satisfied.
I purchased this warmer because it had the highest temp of most others on Amazon. Like most, I had planned on using this for my hot drinks so they would stay hot while I drank them. Sadly the only part of my drink that stayed hot was the bottom inch of liquid in any cup that I tried. I used several different cups of varying sizes and not a single one produced the results I was expecting (a hot drink to the last drop). Everyone will say to get a lid for your mug to trap the heat....... Obviously, but this review is for the item as stated and sold. Not any hacks or workarounds I had to do to achieve the results. So, if you drink from an espresso cup this should work perfectly for you. If however, your drinks are more than 2 oz, then look elsewhere for something to keep it hot.
Since almost every mug I've found has a base with a raised center, why not design mug warmers with a higher center contact area? Also, the temperature button doesn't remember its setting, so you have to turn it on, then tap twice to get the hottest setting, which keeps beverages in my mugs warm but not hot. If you have a flat bottom mug I assume it would work better. The buttons are not physical switches, and tapping is hit or miss for me, you have to tap exactly in the center of the touch-sensitive buttons.