IMO based on your reply and my experience that's a lenovo laptop issue, across the board.
If you're referencing the lenovo, they start out great, then for some reason their idea of 2.3 hrs remaining compared to my clocked time of 2.3 is much different. Throw in you have to send the laptop back on your dime to them, with a 30 day turn around (average) time frame. I'd advise against them.

