"Power needs" refers to the amount of energy or electricity required to operate or function something efficiently. It is the necessary amount of power or electrical supply needed to make something work. Full definition
However, with the amount of power needed for each technology, I'm curious to see how the phone's battery holds up. (tomsguide.com)
The analog swing felt 1:1 with what was happening on the screen, so eventually I began to get a better understanding of how much power I needed for each shot. (shortpause.com)
You can reduce the amount of power you need with sun power charge ports, known more simply as solar chargers. (one-blue-marble.com)