MBP sleep battery consumption

mrmunkily

macrumors newbie
Original poster
Jul 26, 2005
9
0
Hi

Was wondering what how long my battery will last if I sleep my MBP.

If I have a full charge on my battery, boot it, and then put it to sleep, how long can it sleep before draining the entire battery?
 

djfern

macrumors newbie
Jul 9, 2004
13
0
Ottawa
MBP battery in sleep

mrmunkily said:
Hi

Was wondering what how long my battery will last if I sleep my MBP.

If I have a full charge on my battery, boot it, and then put it to sleep, how long can it sleep before draining the entire battery?
It seems to use quite a bit of power. I've noticed then when i leave it sleeping with a full charge, after about 5 hours, it's lost 12%-15% power. So if you factor that, it should last about 40 hours + in sleep mode, with a full charge.

My powerbook g3 by contrast could last several days and wake up with well over 50% power. Kinda wierd...
 

XP Defector

macrumors 6502
Apr 5, 2006
492
0
I notice on my MacBook that if I sleep the machine, the loss in power seems considerable. Though I have not tested this methodically.
 

mrmunkily

macrumors newbie
Original poster
Jul 26, 2005
9
0
What I've taken to doing is putting the machine to sleep, waiting for the light to start pulsing, and then quickly popping the battery out of the machine for 1 second.

This kills the RAM suspend, and the next time you power up it restores your session from the "safe sleep" hard drive area. This takes about 5 seconds, as opposed to the 10 + 30 seconds it takes to log into my account from a cold boot.

This is probably a "really bad idea" if you have important unsaved documents open, of course :)
 

aaron.lee2006

macrumors 65816
Feb 23, 2006
1,215
0
Ontario, Canada
djfern said:
It seems to use quite a bit of power. I've noticed then when i leave it sleeping with a full charge, after about 5 hours, it's lost 12%-15% power. So if you factor that, it should last about 40 hours + in sleep mode, with a full charge.

My powerbook g3 by contrast could last several days and wake up with well over 50% power. Kinda wierd...
I agree, it should last a good 40 hours.

PS 300th post!! yay.
 

ZoomZoomZoom

macrumors 6502a
May 2, 2005
767
0
Oh wow, 40 hours seems really short. (I mean that in all seriousness, as I usually carry my laptop with me my whole day, and that means maybe 8 hours of sleep which = 20% of the charge) I have a PB G4 and I'll get a MBP anyways, but this is just surprising for me.

My PB's battery (which is half depleted, if i remember right) has shown numbers like 150 hours when i snap it open fast after sleep. At least, if I'm reading that correctly...