[liberationtech] A battery lasting GNU/Linux distribution?

[anon14959 at Safe-mail.net]

I bought myself quite a lot of books recenty. Ebooks. And I've broken my reader device. And I was thinking about not replacing it, but rather go for a distribution that is directed at low power consumption to maximise the battery life. I would boot that from a stick and go around with the same thing. A regular distro with Wifi enabled most of the time means about 4 hours on my hardware. I'd want something to disable and ignore any radio device, camera, USB, even downclocking the CPU anything that can push closer to 8 hours of use with a readable screen.