Rick put a spatially tessellated void inside a modified temporal field until a planet developed intelligent life. This then became the Microverse. Rick gave the aliens in the Microverse another invention, known as the Gooblebox, which is a machine that generates electricity that powers everything in their society. The machine is activated by their work. Unbeknownst to them, the electricity that powers their society, also powers the giant battery they're inside of, which gives Rick's ship infinite power, so that he'll never need to pay money, do work, or run out of battery life every again.
In The Ricks Must Be Crazy, one of the aliens, Zeep Xanflorp, thought that it was too much work to use the Gooblebox and so he created a more efficient source of energy called the "Miniverse Battery", which was the exact same thing as the Microverse battery. Because they had this new source of power, they stopped using the Gooblebox and Rick's space cruiser could no longer function. Rick and Morty had to travel into the Microverse. After a big extravaganza, Rick had explained to Zeep, what had happened, which led to a huge fight. Zeep wanted to kill Rick so that the Microverse would still be able to continue on, without them working for him and Rick wanted to keep the battery working. So, they got into a huge fight, trying to kill each other. Rick escaped and instead of killing him, he mind controlled the entire population of the Microverse, so that they would all charge his battery, without any free will, leaving only a powerless Zeep Xanflorp behind, where his self awareness and intelligence was unable to get him anywhere now. That is how the Microverse currently functions and how Rick's ship currently works.