The battery's form factor seems 100% identical to the multi-lobed cell we found in the 2015 Macbook.

And yet somehow, Apple managed to squeeze in a 4% capacity increase from the 7.55 V, 39.71 Wh battery in last year's model. Apple claims this new 7.56 V, 41.41 Wh Li-ion power source should provide up to 11 hours of iTunes movie playback.

Unfortunately, they did not squeeze in any of those nifty adhesive pull tabs we've seen in Apple's iDevices.