Two lightning strikes during launch. The first strike, at 36 seconds after liftoff, knocked the three fuel cells offline and the craft switched to battery power automatically. The second strike, at 52 seconds after liftoff, knocked the onboard guidance platform offline. Four temperature sensors on the outside of the Lunar Module were burnt out and four measuring devices in the reaction control system failed temporarily. Fuel cell power was restored about four minutes later.
Also, from the link I sent:
Don’t just say “power was restored.” TELL THE STORY YOU PUSSY