Battery drains in Sleep Mode

Question

Battery drains in Sleep Mode

I have been having the recent problem that if I use my 17" Mac Book Pro on battery I can't leave it on for extended periods because the battery will drain considerably even when in sleep. In the past I was able to leave the laptop on and put it in my bag and wake it up a few hours later with very little battery loss. Now it seems as if the machine is not going to sleep and just continues to drain the battery.

My sleep settings are still the same. Is there something that can be preventing the machine from fully going to sleep, like leaving a browser open?

Any help would be appreciated.

Thanks, Sean

17" Mac Book Pro, Mac OS X (10.6.5), Late 2006 vintage

Posted on Nov 19, 2010 3:06 AM

Reply

Answer 1

Best reply

Toocool4

Level 2

365 points

Nov 19, 2010 3:47 AM in response to Sean Pic-Kell

Have a look at this may help http://www.youtube.com/watch?v=TR00IBXZO8s

Reply

Answer 2

Allan Jones

Level 9

68,690 points

Nov 19, 2010 12:22 PM in response to Sean Pic-Kell

I'm suspecting your battery is failing.

I'm on my second failing MBP battery now. With both, as they began to fail, they would lose much more charge when sleeping that they did when new. When new, 12 hours of sleep would seldom use more than 5 percent of the charge. As the batteries started to go walkabout, that increased to 20-40 percent.

System Profiler will tell you the health of your battery (it's in Applications > Utilities). Launch it and select "Power" in the left pane. When the power info appears in the main window, copy and paste the "Battery Information" section into a response to your own thread. *BE SURE* to omit any serial numbers before posting.

We can then look at that report and see if any of the numbers suggest a problem. If the batter yis not the original, please state its approximate age.

Is there something that can be preventing the machine from fully going to sleep, like leaving a browser open?

I would be very careful in considering this. The huge downside is heat. If the computer is running with the lid closed in a bag. the temps could exceed what the innards can handle. I had my MBP wake up in the bag during a short trip home from a local museum--maybe 5 minutes max travel--and the case was so hot it was nearly impossible to touch.

Reply

Answer 3

Dec 4, 2010 10:21 AM in response to Sean Pic-Kell

Sorry I haven't replied to the suggestions. I got busy and forgot I had posted this. Here is the battery information from System Profiler. I have two batteries listed, one is the original Apple battery that came with the unit and the second is a third party one I purchased a few months ago.

What I have found is that if I leave the lid open even with no applications running the machine won't fully go to sleep and will drain the battery. If I close the lid the machine seems to go to sleep and the battery won't drain much even after a few hours.

Apple Battery Information:

Model Information:
Manufacturer: SMP
Device name: ASMB014
Pack Lot Code: 0001
PCB Lot Code: 0000
Firmware Version: 0102
Hardware Revision: 0202
Cell Revision: 0100
Charge Information:
Charge remaining (mAh): 3697
Fully charged: Yes
Charging: No
Full charge capacity (mAh): 3697
Health Information:
Cycle count: 52
Condition: Check Battery
Battery Installed: Yes
Amperage (mA): 151
Voltage (mV): 12597

Third Party Battery Information:

Model Information:
Manufacturer: GSA-A1189
Device name: ASMB014
Pack Lot Code: 8641
PCB Lot Code: 1a20
Firmware Version: ff14
Hardware Revision: 000c
Cell Revision: 00c8
Charge Information:
Charge remaining (mAh): 6558
Fully charged: Yes
Charging: No
Full charge capacity (mAh): 6566
Health Information:
Cycle count: 15
Condition: Normal
Battery Installed: Yes
Amperage (mA): 349
Voltage (mV): 12529

System Power Settings:

AC Power:
System Sleep Timer (Minutes): 10
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 10
Automatic Restart On Power Loss: No
Wake On AC Change: No
Wake On Clamshell Open: Yes
Wake On LAN: No
Current Power Source: Yes
Display Sleep Uses Dim: Yes
Battery Power:
System Sleep Timer (Minutes): 10
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 2
Wake On AC Change: No
Wake On Clamshell Open: Yes
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes

Reply