My last computer had an ASUS motherboard and so does my present one. Seeing this behavior isn't comforting:
ASUS officially admitted that it provided better batteries to reviewers of its popular Eee PC 900 than those it shipped to actual customers. According to reports flowing in from Hong Kong, customers who purchased the new UMPCs on launch day complained that ASUS mislead consumers and reviewers. The batteries that were given to reviewers were 5800mAh batteries while consumers were given 4800mAh.