New Battery from Apple and now decreased time remaining??

Quote:

I had my 2010 13" MBP's battery replaced by Apple yesterday and now I'm showing I have like 3:45 remaining on a full charge. I looked around online and it says I should be getting up to 10 hours. I'd be fine if it said I have 8 hours remaining but Do these take a few days or something to calibrate? I know they're supposed to be precalibrated but when they're replaced is there something it needs to go through? I'll call up AppleCare in a few days and see what they say.

Calibrate the battery and the battery estimate depends on what processes you are doing at the time, brightness, etc. Apple usually does tests with half brightness, so if your brightness is turned up really high it would show a lot less.
When they say "up to 10 hours", thats all it is. Under a light load at medium brightness, you can get 10 hours. But with wifi on, brightness high, and some intensive processing this decreases dramatically. For example, I can get 4-5 hours out of my (old) battery with brightness down to a minimum, wifi off, and only quicktime running. But I only get an 1.5 hours or so with 3/4 brightness, Chrome running with 40+ tabs, wifi on, mail running, itunes, etc.

What kind of battery time did you used to get?

Source: http://forums.macrumors.com/showthread.php?t=1621793&goto=newpost

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