I've had many a project lately that needed to use batteries rather than being powered from the mains. I've been reading lots lately about saving power in AVR chips and general concepts for power conservation in my projects. It's made me a better engineer in general and I think all my future projects will benefit from the knowledge regardless of their power source. During all my research I did stumble upon this article that I thought would be useful to the masses and thought I'd share it with everyone.
The Great read for battery powered projects! by Jay Collett, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.