While weather is the biggest impediment for the progress of the round-the-world flight of the Solar Impulse Si2, the pioneering team has experienced some new challenges that have kept the solar-powered airplane grounded for nearly three weeks.
A big reason for the delay has been low battery levels following the flight from Mandalay, Myanmar, to Chongqing, China. With poor weather in the region and a lack of solar energy to recharge the batteries, the planned pit stop in Chongqing has turned into a much longer than planned stay.
