Battery drains unreasonably fast in mac book pro 13" 2011?

Question

macbook

Good day,
The problem, in fact, is reflected in the title. I'll add a few facts:
- When surfing the web, it can sit down in ~ 4 hours, it sometimes sits down in 3.5.
- With the lid closed, it sits down at a rate of ~ 1% per hour
- cl.ly/1P290Q1I2E3c0i2Q1209
- The CPU seems to be not loaded with anything, I looked at the Activity monitor - it did not reveal anything
- I performed battery calibration
Can someone tell me how to find the cause?
PS I'm not sure, but maybe it started with an update to Lion

Answer 1

Seems like normal readings.
4 hours for such normal surfing with YouTube and other wi-fi stray is a good indicator.
1% per hour is 100 hours, which is about four days;

Answer 2

I had a similar problem with a macbook mc517. I found a couple more people on Western forums, everyone has the same problem. The system monitor is clean, nothing loads the processor, there is a reserve of free ram. I calibrated the battery, reset smc, but the problem was solved only by installing Snow Leopard.