Hell, Intel Haswell in Apple hardware (15" rMBP, mid-2015) rips through the battery, even on stock OS X. I've been at home, on AC power, starting around 9-10%

Hell, Intel Haswell in Apple hardware (15" rMBP, mid-2015) rips through the battery, even on stock OS X. I've been at home, on AC power, starting around 9-10% battery, where it tells me 12+ hours until full charge. This laptop is 4 months old, and that scenario was only iTerm and Chrome open... :'(