A coffee warmer is an electric device used to keep mugs and their contents warm to pre-warm a mug prior to introducing a hot drink. This prevents abrupt loss of a few of the warmth during the cold material, or to maintain the contents of a mug hot for extended intervals.
This is accomplished in a similar approach to electrical thermoses, providing gradual low-wattage warmth to maintain an amount of thermal energy at a liquid. All of these are electrically-powered but most are battery-powered using a lithium battery and a USB port.
List of 10 Best Coffee Warmer
At the end, with so many choices out there to choose from, the best way to choose which mug warmer will work best for you will be to consider exactly what you want from your mug warmer. Would you really care more about automatic heating temperatures or picking your personal temperature? Questions such as this will ascertain which choice will suit best for your requirements. So do a little research, look around, and you will quickly have the ability to find one which best matches you.