Resposta para "MacBook shuts down randomly with still battery charge left"I had the same problem with a macbook air, and managed to solve it with these hints. I reset the SMC, and made a OS installation USB stick. When booting using the stick, my mac didn’t shut down immediately, and I was able to run the battery down. I had to reboot a few times when the battery was low. After charging back to 100% my mac is now all well.