Based on the description on their site, the controller includes a built-in battery: "8.39 Wh Li-ion battery, 35+ hours of gameplay… "
That was disappointing for me. Specially condidering the Steam Frame’s controllers make use of AA batteries: “One replaceable AA battery per controller, 40hr battery life”
AA Batteries might not be as convenient to use, but being able to replace them is a great advantage. All my Xbox360 controllers still work fine, but none of my PS3’ Dualshock 3s.
The official docking station could be used to recharge (rechargables) AA batteries so the functionality could remain the same.
What do you need AA batteries for? And why do you think the whole world also does?
You have missed my point entirely. OP is disappointed that the Steam Controller doesn’t use AAs, while the Steam Frame controllers do.
Easily replaceable, rechargeable batteries are the best solution we as a society currently have for electronic devices. We can’t force people to not use disposables - so internals like that on the Steam Controller is the best-fit solution currently.
As an aside, we currently have ~20 or so AA Eneloops in circulation in our household currently, from TV and AC remotes, to children’s toys, to IOT devices.