[jzdziarski]

I set up my new powerbook with exactly the same configuration as my old 1.5; went to condition the battery last night and managed to get 4:45 out of it, where i only got 4:00 out of my 1.5. Has anyone else noticed the same improvement?

[jzdziarski]

This is on a 17" by the way

[Randman]

Well, it is a new battery. Give it a year and see what happens.. Also, are the Energy Saver settings the same?

[jzdziarski]

Except that I've only had my 15" for three weeks also.

[pumpkinapo]

So your comparing your 1.5GHz 15" to your 1.67GHz 17"?

[wunderkind]

17" PBs use a higher capacity battery than 15".

[StiZeven]

What kind of usage was going on while getting that 4:45? Was it real usage (at least 75% brightness, WiFi on and web surfing, office, apps, perhaps a puzzle game or two, log on, off, etc), or was it just sitting there with a dim screen with not much usage at all? Sleep time of course wouldn't count either

[69camaro]

i'm lucky to get a little over an hour out of my Rev A 17 with usage.

[TailsToo]

Originally posted by 69camaro:
i'm lucky to get a little over an hour out of my Rev A 17 with usage.

Sounds like it's time for a new battery.

[jzdziarski]

Sorry I meant to type 1.5. I have two 17", a 1.5Ghz, and a 1.67Ghz. The 1.67 has better battery life than the 1.5Ghz did; I picked up a new battery last night to test, and testing with the same battery the 1.67 still has better life.

[Randman]

Swop batteries and see what you get.

[StiZeven]

Originally posted by StiZeven:
What kind of usage was going on while getting that 4:45? Was it real usage (at least 75% brightness, WiFi on and web surfing, office, apps, perhaps a puzzle game or two, log on, off, etc), or was it just sitting there with a dim screen with not much usage at all? Sleep time of course wouldn't count either

Good question! I'd like to know this too!

[LameLefty]

My new 15"/1.5Ghz with a gig of RAM got about 3.5 hours of steady usage on battery last night (web-surfing, email, usenet reader, etc.). Very cool, although my two year old G3 iBook still gets about four hours on the original battery.

[wuzup101]

My 15" 1.5ghz (rev b for the 15") gets like 3.25ish under real world conditions at the most. This is constant use with wifi on, surfing, lite photoshop, word, etc... maybe some dreamweaver or fireworks on there. I typically don't have the screan brightness turned up more than half way (usually not necessary). I'm not sure how you get more than 4hrs but that would be great...

[jzdziarski]

I keep my screen pretty bright, so probably 50% at least...WiFi on, Bluetooth off, web surfing, several shells open (IRC, some top sessions on other machines, etc.) did a little work on a book I'm writing, just your basic usage.

I did try the same battery and got a noticeable difference between the two machines. It could be coincidence though - i'm wondering if perhaps I should idle both on 'High' CPU settings?

Also is there any way to tell what the exact cpu frequency is? I'd like to see what speed automatic is setting.

[wuzup101]

I have to say that is impressive. I wish my powerbook got more than 4hrs of batt life!

[Ryan1524]

with screen dimmed to 1 bar, wifi off, BT off, i can sit and type notes in class for 3.5 hours with my 15" 1.5 Ghz. with wifi on, usually maxes out at barely 3 hours.

[ricacu]

Originally posted by Ryan1524:
with screen dimmed to 1 bar, wifi off, BT off, i can sit and type notes in class for 3.5 hours with my 15" 1.5 Ghz. with wifi on, usually maxes out at barely 3 hours.

thats normal. wow, itunes with full volume eats the baterry haha, i get 3.5 hours with 50% bright, wifi on, surfing. 3 hours same settings playin some mp3 at full volume.