AnandTech compares batterylife of the MacBook Air to the iPad
Is Haswell Ready for Tablet Duty? Battery Life of Haswell ULT vs Modern ARM Tablets
by Anand Lal Shimpi on July 22, 2013 2:11 PM EST
" total platform power of the 2013 13-inch MacBook Air is lower than Apple’s 4th generation iPad. Even if you take into account battery capacity, the 13-inch MBA lasts around 18% longer on a single charge."