I have been using my new 13" mbp for about 4 hours and I still have 3-4 hours of battery left. This was after some pretty heavy duty file transfers as well.
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10 Hour Battery Really?
- Thread starter bjones521
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I have owned a mbp 15" with the 7 hour claimed battery.
Under the following conditions it lasts 4 hours:
100% brightness (the glare is so bad that I had to have it at 100%)
Just surfing the internet using firefox.
Wifi on, bluetooth off, integrated 9400m graphics.
This is not magical but expected behavior for laptops. I usually say 60% of about whatever the manufacturer quotes. Under no conditions am I able to get 7 hours, even at 1 brightness which is a mirror unless you're in a pitch black environment. This new 9 hour battery on the 15" model I'd expect to last 4.5 - 4.75 hours under the same conditions.
I'm not too sure about the 13" mbp but on the 17" i7 model, I got just about 10 hours today on campus.
Any time Apple quotes a battery life time, it is always under EXTREME conservation methods: Dim screen, wifi off, bluetooth off, keyboard light off, reading a PDF or typing a document.
Bigger battery (58 to 63.5 watt hour) and system optimization. Of course in regular use it's not going to be 10 hours, but it should hold longer than the mid 2009 13" MBPs.
+1. I get about the same. I have managed to milk out 8.5 hours from mine, though...
Why don't you read the footnote on the page?
Really?
From Apple: http://www.apple.com/uk/macbookpro/features.html
did you read the statement "Standard definition video rundown test, brightness 65 percent" below the test result? you can play video on the new 15" MBP for 5 hours. Please tell me which laptop, with similar spec, can do this?
for someone interested in the review, here is the link: http://www.engadget.com/2010/04/14/macbook-pro-core-i7-review/
If I could photoshop for 3 or 4 hours of solid use on a 15inch screen with a couple of browsers up, using only the battery, with no slowdown - I'd be more than impressed.
That would be pretty neat yeah. But if by browsers you mean web browsers, i guess it will depend more on how many - flash ads / bad javascripts / animated GIFs - you have, than photoshop itself.
That sounds about normal, advertised battery time is always a bit optimistic.
If you need more time, you can gain by reducing brightness, and using addons for your browser that can shut down flash ads.
But why would you want to lug around a powerbrick, untangle the cord and make sure it's not in anyone's way each time you want to plug it in? At ten hours, it's coming close to *me* being exhausted before the battery is, which would mean no more taking a powerbrick to work...
Yes, it is the mid 2009 model.
Edit: My battery life is at 96% with 100 load cycles.
What's the best way to ensure good battery life? Let it fully charge then fully drain for the first month?