That’s true whether the heater uses a power tool battery, burns kerosene or propane, or uses an exothermic (heat producing) chemical reaction. Wearable Heaters Milwaukee M12 Heated AXIS Vest ...

Because it’s a portable mug, the battery keeps java (or hot chocolate or tea) hot all day, and can contain a lot more liquid than the desktop model. Buy Cauldryn Coffee Smart Mug 3.

It also looks kind of like a novelty mug. Ninety7 named this battery base “Sky,” and it says it’ll get about eight hours of battery life on a single charge.

I’ve been testing the EcoFlow Wave 3, a follow-up to the all-in-one battery-powered air conditioner, heater, ... The third-generation portable heat pump from EcoFlow can’t perform miracles.

On the downside, that portable coffeemaker/mug relies on coffee pods and only heats up to 160° F (71° C) – the National Coffee Association of the USA supports Mojoe's contention that water ...

The Wave 2 has an eight-hour runtime with its detachable 1,159 kWh battery. If you need more than that, you can pair the portable AC and heater with EcoFlow’s portable power stations for up to ...

It takes only 20 to 30 minutes to charge mojoe's battery, but even if the consumer needs some java before it's charged, they can still brew a cup by plugging the portable mug into a wall outlet.

A UMBC grad made the thing he always wanted as a student: a travel mug that makes its own coffee. In the wee hours of the morning Joseph Hyman was stuck in his college library, wishing he had some ...