>>11576554>power in a stellar scaleBy power, do you mean energy?
Stellar scale would be one of distance, which is space, not of energy.
Do you mean equal to energy output of the sun?
Cause pistol and mantis shrimp can produce temperatures hotter than the surface of the sun, but only for a brief fraction of a second.
Do you mean a battery that will last as long or longer than the life of the sun?
Cause if you just want a battery that lasts a REALLY freaking long time then you can make a battery that runs on radio-isotope decay. Xenon-124 has a measured half-life of 18 sextillion years, which is much longer than the life of our sun at 10 billion years.
Give a better idea or scale of how much energy/power are you talking about?