Caffeine is our power source. What better way for us to visualize our batteries being charged, than a mug with a battery that powers up when we fill it with our piping hot caffeinated libation of choice? This ceramic mug is classic black with a white outline of a battery on it. Pour in your hot liquid - anything over 96.8F (36C) - and watch the green cells within the battery light up. As your beverage cools (or is ingested) the battery will fade into emptiness, reminding you that you need a refill.
- Ceramic mug changes color when filled with hot coffee or tea
- Holds 10 ounces of your favorite hot beverage
- Watch the battery "light up" when your mug is hot
- Love your mug: hand-wash only. The extreme temperature of a dishwasher will destroy the color-changing parts of the mug.