Lithium is the only metal to have been produced at the Big Bang. All other elements - except Hydrogen and Helium - were produced by stars - some in hot nuclear cores, others in fantastic explosions like a supernova.
The percentage of lithium in the Universe, however, is more ... ..or less the same today as it was at the beginning of time.
In other words, the lithium that powers your laptop is as old as the Universe itself! With only three protons and three electrons, lithium is a fragile element that is easily destroyed in the hot interior of stars...