Leopard killed my battery!

dal20402

macrumors 6502
Original poster
Apr 24, 2006
290
0
CD MBP, 2.16 GHz, 2GB RAM, very early build.

Installed Leopard and am (mostly) loving it -- while connected to AC power.

When I unplugged, I suddenly noticed I had less than an hour of battery life. :eek:

A check in System Profiler showed my battery as having 2607 mAh full charge capacity -- before I installed Leopard, it had ~5100 mAh. This is a relatively new battery with 65 cycles on it.

The battery works fine -- no sudden shutdown or anything -- but this suddenly lower capacity is very strange. I tried an SMC reset with no effect. Next I'll try calibration. Has anyone experienced this? Causes?
 

leekohler

macrumors G5
Dec 22, 2004
14,164
20
Chicago, Illinois
CD MBP, 2.16 GHz, 2GB RAM, very early build.

Installed Leopard and am (mostly) loving it -- while connected to AC power.

When I unplugged, I suddenly noticed I had less than an hour of battery life. :eek:

A check in System Profiler showed my battery as having 2607 mAh full charge capacity -- before I installed Leopard, it had ~5100 mAh. This is a relatively new battery with 65 cycles on it.

The battery works fine -- no sudden shutdown or anything -- but this suddenly lower capacity is very strange. I tried an SMC reset with no effect. Next I'll try calibration. Has anyone experienced this? Causes?
I had that happen with my iBook G4 as well. After about a day of use, the battery capacity went back to normal. I don't know what the cause was, I was just glad it seemd to fix itself. I've had no further issues with it.
 
Comment

djejrejk

macrumors 6502a
Jan 3, 2007
520
1
Uhh...
CD MBP, 2.16 GHz, 2GB RAM, very early build.

Installed Leopard and am (mostly) loving it -- while connected to AC power.

When I unplugged, I suddenly noticed I had less than an hour of battery life. :eek:

A check in System Profiler showed my battery as having 2607 mAh full charge capacity -- before I installed Leopard, it had ~5100 mAh. This is a relatively new battery with 65 cycles on it.

The battery works fine -- no sudden shutdown or anything -- but this suddenly lower capacity is very strange. I tried an SMC reset with no effect. Next I'll try calibration. Has anyone experienced this? Causes?
Weird, my battery life has improved... or it seems like it has
 
Comment

Warbrain

macrumors 603
Jun 28, 2004
5,699
292
Chicago, IL
My iBook, which has had the worst battery life for a long time, actually got better with this upgrade. It charges much better now and I get much better management.
 
Comment

dal20402

macrumors 6502
Original poster
Apr 24, 2006
290
0
I had that happen with my iBook G4 as well. After about a day of use, the battery capacity went back to normal. I don't know what the cause was, I was just glad it seemd to fix itself. I've had no further issues with it.
This now appears to have happened to me.

I charged my battery fully and began to discharge as fast as possible (turn on airport, start sending data over the network, turn brightness up, and start 3 openssl speed processes). After 5 minutes, I was down to 72%. Then I noticed my battery indicator suddenly and randomly jumped to 89%. I checked in System Profiler and it now reports that my battery has a full charge capacity of 5266 mAh, which is slightly more than it was before the upgrade to Leopard. Now I hope it stays this way... :confused:
 
Comment

gdesalvo@umail.

macrumors member
May 1, 2007
57
0
Just an idea...

This now appears to have happened to me.

I charged my battery fully and began to discharge as fast as possible (turn on airport, start sending data over the network, turn brightness up, and start 3 openssl speed processes). After 5 minutes, I was down to 72%. Then I noticed my battery indicator suddenly and randomly jumped to 89%. I checked in System Profiler and it now reports that my battery has a full charge capacity of 5266 mAh, which is slightly more than it was before the upgrade to Leopard. Now I hope it stays this way... :confused:
Did anyone find it likely that while the new OS is indexing, which can take up to 4 hours, it would be using a lot of CPU power and thus be rather power inefficient? That's probably what happened as well as booting all the new apps. After a day of use all is likely back to normal and indexed which means you get your battery indexed. although this seems unlikely
 
Comment

leekohler

macrumors G5
Dec 22, 2004
14,164
20
Chicago, Illinois
Did anyone find it likely that while the new OS is indexing, which can take up to 4 hours, it would be using a lot of CPU power and thus be rather power inefficient? That's probably what happened as well as booting all the new apps. After a day of use all is likely back to normal and indexed which means you get your battery indexed. although this seems unlikely
Hmm, could be. I never actually thought of that.
 
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