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My PowerBook 17" with 2 hours of battery time when fully charged!
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Forum Regular
Join Date: Feb 2003
Location: Yorba Linda, CA / Taipei, Taiwan
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Registered User
Join Date: Jan 2003
Location: California
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Originally posted by erichen:
Does anyone already received their 17" has this same problem? Would OS 10.2.5 resolve this battery issue?
~Eric
http://homepage.mac.com/erichen
You could do a few things (if you haven't already) to extend battery life somewhat:
* When the notebook is running on battery power, make sure the screen brightness is lower.
* Turn off Bluetooth if you are not using it.
* Turn off the built-in Ethernet if you are not using it.
* Turn off Airport if you are not using it.
I get 3 hours of *real* usage time on battery power (a lot of Internet usage with only the Airport as the network device, no disc use, 60-70% brightness, etc.)
-A
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Addicted to MacNN
Join Date: Dec 1999
Location: Pleasanton, CA
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A perfectly normal 17-inch PowerBook gets about two hours out if its battery while playing DVD's. Your PowerBook is not defective. OS 10.2.5 will not make your PowerBook's battery last longer.
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Professional Poster
Join Date: Jan 2003
Location: WV, USA
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Yeah, that battery life actually sounds about right. To extend your battery life, follow the tips provided, and also, step down the performance from Highest to the evergy saving selection that downclock the CPU & disables the L3 cache. Screen brightness and having Bluetooth & AirPort enabled when you're not using them are major battery drainers.
*p.s. - seanyepez, check out my post to you in my Review thread if you haven't already since your PM inbox was full 
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5G 60GB video iPod
512MB iPod Shuffle
Westone UM1 Canalphones
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Grizzled Veteran
Join Date: May 2002
Location: USA
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Although I have a 15" 1gz model, I would advise you do what I do - scale the performance value in Energy Saver to reduced for battery usage, and lower the brightness on the lcd.
When doing this, I can get 3 hours plus. I was traveling via car to Connecticut last week, I managed to listen to lots of mp3s and then watch (the very good film) Road to Perdition on DVD.
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Clinically Insane
Join Date: Dec 2000
Location: Caught in a web of deceit.
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Originally posted by SwarmyCurve:
Although I have a 15" 1gz model, I would advise you do what I do - scale the performance value in Energy Saver to reduced for battery usage, and lower the brightness on the lcd.
When doing this, I can get 3 hours plus. I was traveling via car to Connecticut last week, I managed to listen to lots of mp3s and then watch (the very good film) Road to Perdition on DVD.
Just a note for those who might be unaware.
The 15" 1 GHz uses much less power, and has an 11% bigger battery than the 17". 2+ish hours seems about right for the 17".
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Senior User
Join Date: Feb 2003
Location: Richmond! VA
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I get about 2 hours and some change on a ful charge and then it gets a lot longer under nornal usage with turning the brightness down and others that io talked about.
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[ 15 inch Macbook Pro 2.8 GHz Core 2 Duo ][ 20 inch Intel iMac 2 GB RAM / 256 MB ATI XT 1600 ][ iPhone OG (3GS on Reservation)][ White iPod 5th Gen. 60GB ]
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Grizzled Veteran
Join Date: Mar 2003
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He didn't say he is playing DVD's, so if you are correct then he may not be getting "normal" battery life.
Originally posted by seanyepez:
A perfectly normal 17-inch PowerBook gets about two hours out if its battery while playing DVD's. Your PowerBook is not defective. OS 10.2.5 will not make your PowerBook's battery last longer.
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MacBook and iMac Core 2 Duo 24"
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Mac Elite
Join Date: Mar 2003
Location: United States
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That's also the battery life I get for just normal use. 2 hours. It's pretty normal... I just wish they will somehow later on come up with a battery that will have more power in it so that it can last last least 3 to 4 hours for normal use...
Ming
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A Proud Mac User Since: 03/24/03
Apple Computer: MacBook 2.0GHz Intel Core 2 Duo, 3 GB Memory, 120 GB HD
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Forum Regular
Join Date: Feb 2003
Location: Yorba Linda, CA / Taipei, Taiwan
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Originally posted by chrisutley:
He didn't say he is playing DVD's, so if you are correct then he may not be getting "normal" battery life.
You were right, I haven't play DVD on my 17" yet! I can't imagine how can I finish a DVD while in the flight?? If normal usage only last 2 hours......wouldn't DVD consume more power?
Anyway, thank you guys for all your valuable suggestions!
~Eric 
http://homepage.mac.com/erichen
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Mac Elite
Join Date: Sep 2002
Location: Oakland, CA
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Originally posted by AssassyN:
Yeah, that battery life actually sounds about right. To extend your battery life, follow the tips provided, and also, step down the performance from Highest to the evergy saving selection that downclock the CPU & disables the L3 cache. Screen brightness and having Bluetooth & AirPort enabled when you're not using them are major battery drainers.
Wait wait wait....when you decrease to "Best Battery Life" it also disables the L3 cache?
I thought it only steps down the processor?
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Dedicated MacNNer
Join Date: Mar 2003
Location: Cali
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can you clarify on how to disable the ethernet. I know you can disable the bluetooth and airport, but cant find out how to disable the ethernet or modem.
Thanks
Force
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Professional Poster
Join Date: Jan 2002
Location: Rochester, NY
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1) Make sure that you calibrate your battery. To do so, charge the unit up so the battery is charged to 100%, and then unplug the unit and use it on battery power until the PowerBook puts itself into sleep mode automatically (because the battery is so low). Then charge it back up again to 100%, and it is calibrated.
2) Do not use the screen at full brightness. Use the F1 key on your keyboard to lower the brightness.
3) Turn off Bluetooth and Ethernet.
4) If you are not using AirPort, turn that off. That along uses lots of power.
5) In the Energy Saver preference panel, turn the Processor Performance to Reduced, instead of Highest.
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Mac Elite
Join Date: Sep 2002
Location: Oakland, CA
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Originally posted by forcelite:
can you clarify on how to disable the ethernet. I know you can disable the bluetooth and airport, but cant find out how to disable the ethernet or modem.
Thanks
Force
Go to System Preferences
Go to Network
In Network, click on the menu bar that said "Show". Go over to Network Port Configurations.
And then turn off the ones that you aren't gonna use, also you might want to put what ever one you do use up to the top of the list (well I guess it doesn't matter since you are turning off anyways).
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Senior User
Join Date: Mar 2001
Location: Santa Barbara, CA, USA
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I noticed, on my 17", that when I charge off included 65w adaptor and then unplug the battery indicator shows about 2:55.
If I charge from empty with my older adaptor used on the Tibook it shows 1:55.
The battery wants to be calibrated/charged by the newer higher power adaptor and if you use the older ones it will (temporarily) screw up the calibration.
Now I use the older adaptor just to operate the computer not to charge it and use the newer adaptor to charge.
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