my guess is that it's for other voltages because lightning carries plenty of data.

> which might require data from the battery that a normal power bank doesn’t provide.

... like the current voltage? Apple fanboys still believe in the magik Apple hardware, it seems.

You'd be more likely to break your neck if the cable doesn't disconnect if the cable gets stuck on something while you're wearing your battery on your hip and moving around. Isn't the end that connect to the headset magnetic for precisely that reason?

All in all, brings back memories of walking around with my Walkman clipped to my belt and headphones on.