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What Kind Of Battery Life Does Your i5 / i7 get? (Assuming auto brightness, BT off)

  • Around what Apple has said, 8 - 9 hours, doing medium load type of stuff

    Votes: 17 20.2%
  • 5 - 6 medium load stuff

    Votes: 41 48.8%
  • 4 or less, WTF

    Votes: 26 31.0%

  • Total voters
    84
Instead of going off of what it says it wouldn't it be better to go off of how long it ACTUALLY LASTS. I timed mine today with a stop watch. When I turned mine on this morning it once said 10:22 but lasted 5:35.
 
I have just done mine for the first time since getting my MBP about 2 weeks ago and it says.

Screenshot2010-05-10at230948.jpg

Which model are you on? And which resolution?
 
I did the calibration and the battery seemed to have suffered worse. WTH? And all the usual suspects have been considered (wifi, screen, GFX, etc.) As soon as I unplug it it reads 4:26.

Calibrating for the third time now..
 
Can you guys please don't use the "time left" next to the battery icon for doing your scientific examinations?

The time left is a simple calculation of Battery_Amperage / Current_Draw and is constantly changing.

Please :( If you boot up your MBP and it says 11:00 left then be happy but take it with a grain of salt - it may be much less, just the system reported in a state where it drew very little power. Then next time you see you only have 4:00 hours left, don't fall in despair.

Just put the percentage in there and time it manually, please.

Thanks,

Tom
 
I just had mine on battery for 2.25-2.5 hours and battery was at 53%. I assume it would have lasted about 5 hours. It was on Intel graphics the whole time, and I was just browsing in Firefox and that's it. Bluetooth off, screen brightness one click below half.
 
BATTERY CARE

About Apple Notebook batteries

Calibrating is done to keep your battery status reporting as accurate as possible, and should be done the first week you get your Mac or a new battery. Calibration does not affect your battery health, improve battery performance, or extend battery life. It only makes battery condition reporting more accurate. If you run on battery frequently, calibrate every 60 days or so. If you run plugged in most of the time or if you infrequently use your notebook, calibrate every 30 days or so.

If you interrupt the calibration process or feel that you didn't do it properly, it's fine to start over and re-calibrate. You won't hurt anything.

Calibrating a portable computer battery


To check battery status, use iStat Pro or coconutBattery or
 > About This Mac > More Info... > Hardware > Power > Charge Information:

Be aware that battery readings are not 100% accurate, so if your brand new battery health is somewhat less than 100% or if it fluctuates up and down over time (100%, 96%, 99%, etc.), don't worry. This is completely normal. It's also normal for it to stop charging when you reach 97% or 98%, etc.

You don't have to worry about anything unless your battery health drops to under 80% with fewer than 300 cycles. In this case, assuming your battery is properly calibrated (so the readings are as accurate as possible), you may have a defective battery. If so, contact AppleCare to see if they will replace it.

Determining Battery Cycle Count
A charge cycle means using all of the battery’s power, but that doesn’t necessarily mean a single charge. For instance, you could use your notebook for an hour or more one day, using half its power, and then recharge it fully. If you did the same thing the next day, it would count as one charge cycle, not two, so you may take several days to complete a cycle.

Apple does not recommend leaving your portable plugged in all the time.
AppleCare support recommends that if you leave your Mac plugged in most of the time, unplug it every 2 or 3 days and run on battery down to somewhere around 50%, then plug it back in. That keeps the electrons moving.

Also, it is not recommended to run your Mac on the A/C adaptor with the battery out. (Of course, this only applies to removable batteries).

As long as you're running it on battery at least every few days and calibrate every month or two, you'll be fine. Relax and just enjoy using your Mac!
 
I get ~7 hrs, while:

-Web Browsing with Safari + watching some videos.
-IM with Adium
-Playing music with iTunes.
-Using Pixelmator, just for a while, it triggers the 330m.
-Backlight keyboard at minimum.
-Screen brightness at 33%.

In conclusion, I am very happy with the Battery Life.

Only 7 hours? I get 18 hours with Photoshop and Final Cut Express running, while watching Flash movies on YouTube at full brightness and with Wi-Fi on! You must return your MBP immediately! It must be defective! :cool:
 
Only 7 hours? I get 18 hours with Photoshop and Final Cut Express running, while watching Flash movies on YouTube at full brightness and with Wi-Fi on! You must return your MBP immediately! It must be defective! :cool:

18?!
 
Only 7 hours? I get 18 hours with Photoshop and Final Cut Express running, while watching Flash movies on YouTube at full brightness and with Wi-Fi on! You must return your MBP immediately! It must be defective! :cool:

Yeah, i haz to emailz Jobz, n ask him a niu model.
 
Instead of going off of what it says it wouldn't it be better to go off of how long it ACTUALLY LASTS. I timed mine today with a stop watch. When I turned mine on this morning it once said 10:22 but lasted 5:35.

+1

Finally someone tests how long it actually last unlike what the meter says.
 
I get ~7 hrs, while:

-Web Browsing with Safari + watching some videos.
-IM with Adium
-Playing music with iTunes.
-Using Pixelmator, just for a while, it triggers the 330m.
-Backlight keyboard at minimum.
-Screen brightness at 33%.

In conclusion, I am very happy with the Battery Life.

Is that what you actually timed, that MBP shut down after 7 hours? Or is it what the meter reports?
 
Hi,

first post... I am too quite disappointed in the battery life of my macbook pro. I get around 2.5 hours of actual "work" out of it. I am just using excell, firefox, icall, and a battery monitor app this day (Ibatt2). See picture of the performance of my battery and judge for yourself what you think.. I will do a proper calibration tommorow, that means leave the battery drained fully for at least 5 hours. After i did this I will use the Ibatt app to record any possible changes.
I use a new macbook pro, 15" high res screen, i7 processor, 7200rpm hard drive.

batteryday.jpg
 
Geez how did you get your temp down to 36? I cant get mine below 45 even sitting at idle for 5 minutes.
 
I like the CPU tool. It would also be nice thing to input your SPEC like MBP 15 i5/i7 X.XX GHz Actual battery time (measured by starting time till auto sleep/off when batterys get to 0%). This will help individuals better understand.

Sorry but this is a question of my own but I'm sure many others will benefit from it. I know that the voltage on the i5 and i7 are the same but I also know that the vram on the 330m is different from 256 to 512 and was wondering if it has any affect on battery life?

Thinking: (side thought) I bet we will have a Processors that will overclock in real time depending on loads, battery power, and user preference. (Battery saver, balance, high performance)
 
Sarcasm detector - failure to launch.

Exactly, I get tired of all the BS artists with their impossible-to-reproduce battery life stories. It's the same guys who claim they got a rebate on top of their educational discount plus gift card, and bought a new MBP for $200. :p
 
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