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jameskk
Oct 26, 2003, 10:15 PM
upgraded from 10.2.8 and now my battery life seems shorter.. I thought Panther would increase it.. 15" PB G4 Albook.

coumerelli
Oct 27, 2003, 09:40 PM
you know...I came here looking for something about battery life and the new 15" Al books. And here I found a thread with nothing much in it. For about 2 hours my powerbook has been plugged in and I like to have time (vs. percent) left to charge showing in my menu bar. It's been giving me 4+ hours left to charge and a click on it shows I have 75% charge. What gives? Meanwhile, as I was serching this forum it decided to change to 'charged'. I don't get it.

Anyone else?

yoda13
Oct 27, 2003, 10:28 PM
I went from about 2:45 in 10.2.6 to about 3:20 in Panther. I checked, it is not lying to me. sorry that you are having problems. Did you do a clean install? BTW, these figures are on my 12" PB

coumerelli
Oct 27, 2003, 10:36 PM
No, I didn't do a clean install, but I plan to in the next few weeks. I don't know that I have a longer or shorter battery life, it's just that the timer is way off when charging. The percent seems to be off too. Earlier today, I happen to glance at the time left (unplugged) and it was at :51. Within 5 minutes it went to sleep. I had to plug it in to wake it, and then after 'calculating' for a good minute, it told me it would be between 4 and 5 hours to charge - but there was about 20% charge on it almost immediatly. :rolleyes:

Horrortaxi
Oct 27, 2003, 10:43 PM
700mhz iBook shows longer battery life by about 20 minutes. I haven't verified that.

Stelliform
Oct 27, 2003, 11:10 PM
I gained about a half an hour on my TiBook... I ran it for over 3 hours today on battery surfing over airport.

Counterfit
Oct 27, 2003, 11:15 PM
I gained 45 minutes to an hour on my new 15". I haven't verified it yet though.

cwedl
Oct 28, 2003, 03:07 AM
Well I upgraded my 12" powerbook with panther, the computer was very slow and the battery life was about the same, I then did a clean install on the computer it ran a lot faster and the battery life was about 15 minutes better.

Mr. MacPhisto
Oct 28, 2003, 10:20 AM
I did a clean install yesterday on my iBook 700 Combo. The previous day I had run a stopwatch to check out the battery life in 10.2.8 (with patch) on a 100% charged battery. My basis for comparison was an activation of the screen saver before unplugging. I disabled sleeping and also did not allow the machine to put the HDD or display to sleep. I did the same thing with Panther yesterday and the same iBook to test out the battery life. 10.2.8 10.2.8 gave me 4 hours, 38 minutes (I've removed the seconds because they are inconsequential). With the same stuff running, Panther yield 5 hours, 3 minutes. I've always been impressed with the battery life I get on my iBook, but a 25 minute increase on the upgrade is spectacular.

bjmorgan
Oct 28, 2003, 10:52 AM
I noticed an increase in Battery Life as well with my 12" (no clean install). And it seems to charge a bit faster.

Abstract
Oct 28, 2003, 12:32 PM
My new rev B 12" Powerbook gets 3 hours and 20-30 minutes. I don't know exactly how long I got using Jaguar since I didn't use Jaguar on my 12" PB for very long (its new), but I think it only lasted for 2:50 to 3:00 hours. Any gain in battery life is good. :)

QCassidy352
Oct 28, 2003, 01:11 PM
in Jag, I my 12" PB 1 Ghz showed 2:45 and got 3:15.

in panther, it shows 3:15, but i haven't tested it yet. So it could just be a more accurate reading in the menu bar, but I'm hoping it's a real increase. :)

OziMac
Oct 28, 2003, 02:18 PM
Q,

Once again, I am almost exactly with you there. Got 3:15 pretty consistenly so far, and something similar (probably a bit less) in Jaguar.

Counterfit
Oct 28, 2003, 02:26 PM
Originally posted by Mr. MacPhisto
I did a clean install yesterday on my iBook 700 Combo. The previous day I had run a stopwatch to check out the battery life in 10.2.8 (with patch) on a 100% charged battery. My basis for comparison was an activation of the screen saver before unplugging. I disabled sleeping and also did not allow the machine to put the HDD or display to sleep. I did the same thing with Panther yesterday and the same iBook to test out the battery life. 10.2.8 10.2.8 gave me 4 hours, 38 minutes (I've removed the seconds because they are inconsequential). With the same stuff running, Panther yield 5 hours, 3 minutes. I've always been impressed with the battery life I get on my iBook, but a 25 minute increase on the upgrade is spectacular. I think I'll try this with my 15" I bet I can get 3:30 max.

ibanez
Nov 1, 2003, 07:49 PM
my battery life on my 15" powerbook (Al) is around 1 hour 30 mins........ whats going on ??????????

Phil Of Mac
Nov 1, 2003, 11:56 PM
Originally posted by ibanez
my battery life on my 15" powerbook (Al) is around 1 hour 30 mins........ whats going on ??????????

A few possibilities. Either you have a bad battery, or you're doing something that really runs down battery life. Turn down screen brightness and turn off Bluetooth and AirPort when you're not using them and you should be okay, unless you have a bad battery.

I will just state that "charged" makes more sense than "plugged in", because when you're charging, you are still plugged in. Just a simple UI enhancement that I liked :)

hugov
Nov 2, 2003, 03:51 PM
TRY X-Charge to get more accurate battery life measurements, and it gives you a time vs charge graph. very cool.

Mord
Nov 3, 2003, 11:17 AM
my ibook has a real 5 hour battery on full brightness and highest proformence prosesing and 640 mb ram most of it being used by random photoshop tasks!!!!!!!!!
its a 600/cd refurb with an advertised 5 hour battery heres how its done

login as root (You have to to have the privilages) and acsess the folder privet on your (its Hidden you have to type in go to folder privet) and open var then db then system configuration or just bring up go to folder and type in:-
/private/var/db/SystemConfiguration/com.apple.PowerManagement.xml
then deleat power manegment thats right deleat it then shut down and hold control, option, shift and the power button to reset the pmu let go then boot up and your battery will last longer and your laptop will run cool

dont wory there is no way deleating this file will screwq up your book

maxmag
Nov 3, 2003, 05:04 PM
I'm not sure if I would trust this advice coming from a person who can't even spell correctly.

Counterfit
Nov 3, 2003, 05:20 PM
Heh, yeah. I think I saw that somewhere before, but it gets reset when you shut down I think.

youcancallmebob
Nov 3, 2003, 05:59 PM
Resetting the PMU might be best reviewed at apple.com/support, since it's kind of tricky. A link to one of the articles:
http://docs.info.apple.com/article.html?artnum=14449

Mord
Nov 4, 2003, 10:03 AM
1) it dose last through a reboot
2)I am deslexic its not my fault
dont descriminate against those less able to spell

Phil Of Mac
Nov 4, 2003, 01:21 PM
We don't discriminate against people less able to spell. We discriminate against people who don't use spell checkers.

youcancallmebob
Nov 4, 2003, 10:59 PM
Teen Phil, we are talking about batteries here. Most posters misspell anyway, and may not know how to spell check (right click if you have a two-button mouse). Anyway, I should add that Panther readings over a one-week span show an average 40-minute real-time gain in battery life over 10.2.8 notations in similar use conditions (Airport on/off, Mail checking/sending, Safari surfing, Photoshop editing, etc.). I can offer no technical information on why this is. The machine is 15" Al PowerBook 1.25 GHz, 1 GB ram.

madru
Nov 5, 2003, 01:46 AM
On my 15" 1.25Ghz pb with airport and bluetooth off and screen brightness all the way down, indicator shows 4:28. I haven't tested it though. I doubt it'll last that long. In practice, it hasn't lasted much over three hours on default settings.

lucidfuse
Dec 2, 2003, 08:34 PM
My battery life has drastically decreased since I installed Panther. I used to get about 2:30 on my PB G4 15" Al; now I get an hour at the most.

I have no idea what to do. I performed a clean install today, and that didn't help at all. I also reset the PMU, and that didn't work.

Don't know if this link will work, but a guy on the Apple Forums said that he's tried everything, even removing the powermanagement.plist, and the only thing that worked was buying a new battery.

http://discussions.info.apple.com/WebX?50@166.UBjGaQoYmLQ.2@.599ccc2d

Do you think that Panther could have ruined batteries?

coolbreeze
Dec 2, 2003, 08:45 PM
Hmm. As I read the last comment, I am on disc 2 of my 10.3 install on my iBook. I sure hope my battery doesn't get fried.