Disconnecting the power requires first extracting the glued-down battery, which we know how to do (although we reserve the right to make a grumpy face as we do it).

This year’s energy source is labeled A2181 and provides 1.129 Wh (296 mAh at 3.814 V).

That amounts to a very slight 1.44% improvement over last year's 1.113 Wh battery. It's clear that battery improvements didn't drive the switch to the 18-hour always-on display—that technology is being enabled by something else.