life of the battery 8 cells on X61t? Poor performance with Win7?

Guys, I bought a new battery which, as said by Lenovo, must be executed 7 hours "in some scenarios. Well I could not go beyond 3.5 hours with Windows 7, wifi, screen on 30% of brightness and 5-6 programs that run and processor speed 5-50% (in the power management) + all together for a minimum performance. Is this normal? I ask, because it was produced 2 years ago and I'm afraid that he has lost some of its power since then...

Note of the moderator; the topic is edited to reflect the content.

about 15% on average, if she takes up to 70%, then the battery would only last about 3 hours to 3 hours and 30 minutes of CPU usage. I thought initially it was a battery problem, but my friend told me that it is the around the average it became too much. These 7 hours battery time are really just marketing gimmick.

Tags: Lenovo Products

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