How to Use 100 Amp Hours in a Spacecraft Command Module

100 amp hours is about like a car battery. A hair dryer puts out a thousand watts at 110, but at 28 or 30 volts, that's 30 amps. So you could run a hair dryer for three hours. And here you are relying upon that amount of energy to power an entire spacecraft,. Its life support, its reentry systems, its thrusters through the most dangerous reentry in the history of human space flight.