The Solar Impulse 2 ground crew prepares to move the solar powered airplane out of it's hanger at Kalaeloa Airport, Hawaii, on March 3, 2016. Solar impulse 2 piloted by Markus Scherdel is testing the airplane after having it's rechargeable batteries replaced. The batteries were damaged when the airplane flew from Japan to Oahu last year. / AFP / AFP PHOTO / EUGENE TANNER