GoKawiilMacBook Pro power draw cut by roughly half to two-thirds since 2011, analysis finds
Comparing Apple's own battery specs for the 2011 and 2026 16-inch MacBook Pro models shows the newer M5 Max machine packs a larger 99.6 watt-hour battery into a chassis about 16% lighter and 31% thinner than its 2011 counterpart. Using Apple's stated web-browsing battery life, average power draw falls from about 11W in 2011 to about 6.2W now, while independent rundown testing shows an even steeper drop from roughly 10.4W to about 3.2W.