There's an adorable plastic pull tab underneath the battery. It's likely there for battery removal, but we aren't sure it's up to the task.

It seems the adhesive holding down the battery is much too strong for the feeble pull tab to break through.

Forgoing the tab in favor of some spudgering, we're able to pry the 3.7 V, 0.8 Wh, 220 mAh battery off the back of the display assembly.

0.8 Wh is more than twice that of the iPod Nano 6th Generation's 0.39 Wh rating.