Maybe my favorite thing of all from Monday’s event was the ingenious battery tech Apple used in the new MacBook.

Timothy B. Lee, writing for Vox about this image:

When you crack open the laptop’s case, most of the space is taken up by its battery. Or, more accurately, batteries — plural. The irregular brown rectangles in the laptop’s four corners, as well as the big one in the middle, are all batteries. The device’s logic board — the brains of the laptop — is at the top. At the bottom of the image you can see the underside of the trackpad.

That logic board is tiny, Moore’s law at work. But batteries follow no such law. So Apple figured out how to break them into pieces to better fit into every nook and cranny of the MacBook case, all while leaving them connected as a single functional unit. Incredible.