I'm wondering if this is a viable concern.
From the Kindle web site.
Battery Life: Read on a single charge for up to 4 days with wireless on. Turn wireless off and read for up to two weeks. Battery life will vary based on wireless usage, such as shopping the Kindle Store and downloading content. In low-coverage areas or in EDGE/GPRS-only coverage, wireless usage will consume battery power more quickly
Does one need more than 4 day to 2 weeks between chargings?
Videogame developers may be forced to cut scenes from their offerings if tests show they could cause epileptic seizures, if a British mother's campaign for a change in the law is successful.
The world is coming to an end--save your buffers!