The brazilian government, represented by its congressmen, published a book explaining the one laptop per child experience ocurring in 5 test schools. The book says that the XO had this battery issue, and (opposite to what i read on post from OLPC and the "60 minutes" reportage) the classmate was more reliable on this point.
The book is available online, only in Portuguese.
I never tested a XO, im writing this on a Classmate PC. I'm eager to test the XO
Ill write more