So, a 3rd party says the battery lasts 4 hours, while Lenovo claims 10 hours? Holy crap, that's an excessive difference. Well, under his real-life workload. Th

So, a 3rd party says the battery lasts 4 hours, while Lenovo claims 10 hours? Holy crap, that's an excessive difference. Well, under his real-life workload. There are probably people that can get to 10 hours, if they only type some documents, don't view any flash/movies, etc.