"4 Days Out" is the ninth episode of the second season of the American television drama series Breaking Bad. It was written by Sam Catlin and directed by Michelle MacLaren. Plot Walter White arrives at the hospital with his family to learn how he has reacted to chemotherapy. He is told that the results of the test will not be ready for a week, but sees a scan of his lungs and notices a prominent growth. Believing that he has little time left, and realizing that recent expenses and Saul Goodman's fees for money laundering leave him with little to give his family, he decides to spend several days cooking meth. He pressures Jesse Pinkman into joining him, on the false pretext that their supply of methylamine will soon spoil. At the cook site in the desert, Jesse leaves the RV's keys in the ignition switch, unaware that it is draining the battery. After a few days of cooking, Walt estimates that they have nearly $1.2 million in meth. With their portable generator out of gasoline, Jesse convinces Walt to take a break and find a hotel for the night, but when they go to start the RV, they find the battery dead. They siphon off gasoline from the RV to the generator to jump-start it, but fuel spilled on the generator catches fire, and Jesse uses all of their drinking water to douse it. Jesse suggests they call Skinny Pete for help using Walt's cell phone; despite the risk of Skyler White discovering this in his cell phone records, Walt allows Jesse to make the call. When Skinny Pete does not arrive, they call him again, and discover he is far off the directions before the phone dies. Walter unsuccessfully tries to trickle charge the RV's battery by manually turning the generator's crank. As he begins to despair, Jesse tries to rouse him, and this inspires Walt to construct a battery from the materials they have on hand. The makeshift battery provides enough power to jump-start the RV, and they are able to return to Albuquerque. Walt and his family return to the doctor the next week, and learn that Walt's cancer is in remission and his tumor has shrunk by 80%; the "growth" Walt spotted was simply inflamed tissue in his lung, and a resulting tear in his esophagus caused him to cough up blood, but can be