Peter Franks

macrumors 68000
Original poster
Jun 9, 2011
1,781
41
Not another battery question, Well kind of.

Is it normal for a fully charged MBP battery to use it's whole power just copying 1 disc which takes around 45 to 48 minutes or so. I would usually do that plugged in, I know, but just wondered if it happens with all you guys. I probably should ask this in the MBP forum, but I'm guessing it's common?

The big users for me are flash, QT and any disc playing, DVD. But...... copying 1 x 45 minute dub on to a DVD is a 100% battery killer.
 

GGJstudios

macrumors Westmere
May 16, 2008
44,468
854
Not another battery question, Well kind of.

Is it normal for a fully charged MBP battery to use it's whole power just copying 1 disc which takes around 45 to 48 minutes or so. I would usually do that plugged in, I know, but just wondered if it happens with all you guys. I probably should ask this in the MBP forum, but I'm guessing it's common?

The big users for me are flash, QT and any disc playing, DVD. But...... copying 1 x 45 minute dub on to a DVD is a 100% battery killer.
It varies, depending on what other processes are running, what system settings you have, and what your battery's type and condition is. Read the BATTERY LIFE FROM A CHARGE section of the following link. This should answer most, if not all, of your battery questions:
 

Peter Franks

macrumors 68000
Original poster
Jun 9, 2011
1,781
41
Yeh, thanks. Battery has never been great, 7 months old, but just thought odd that one burn can drain it. I 'quit' safari, email etc and everything in dock when I do it, but it still drains
 

GGJstudios

macrumors Westmere
May 16, 2008
44,468
854
Yeh, thanks. Battery has never been great, 7 months old, but just thought odd that one burn can drain it. I 'quit' safari, email etc and everything in dock when I do it, but it still drains

Launch Activity Monitor and change "My Processes" at the top to "All Processes". Then look to see what may be consuming system resources.
 

Peter Franks

macrumors 68000
Original poster
Jun 9, 2011
1,781
41
kernel_task and Safari at around 260MB+ main highest ones. Real Mem.
What is the '0' in the PID column, it's the only one with a '0' by it?

Or is it CPU that makes the difference, most between 0 to 7 for something like windows server
 

GGJstudios

macrumors Westmere
May 16, 2008
44,468
854
kernel_task and Safari at around 260MB+ main highest ones. Real Mem.
What is the '0' in the PID column, it's the only one with a '0' by it?

Or is it CPU that makes the difference, most between 0 to 7 for something like windows server
Sort in descending order by CPU. Post a screen shot.
 

Peter Franks

macrumors 68000
Original poster
Jun 9, 2011
1,781
41
Wouldn''t keep still!!!
Gives you rough idea... but they keep coming and going. What order are they normally in before I clicked CPU in the column descending, because they were static then. Weird


Was I supposed to click bottom one too in the list?
 
Last edited:

GGJstudios

macrumors Westmere
May 16, 2008
44,468
854
Wouldn''t keep still!!!
Gives you rough idea... but they keep coming and going. What order are they normally in before I clicked CPU in the column descending, because they were static then. Weird

Image

Was I supposed to click bottom one too in the list?
You can click the CPU column header again, to switch between ascending and descending. Yes, the ranking will constantly change, as different processes use more or less CPU.
 

Peter Franks

macrumors 68000
Original poster
Jun 9, 2011
1,781
41
Oh was it on CPU to start with, thought it might have been kind or process name because there was hardly any movement before I clicked it, What is that kernel task or is it irrelevant. Guessing there's nothing there that can affect a lousy battery life
 

GGJstudios

macrumors Westmere
May 16, 2008
44,468
854
Oh was it on CPU to start with, thought it might have been kind or process name because there was hardly any movement before I clicked it, What is that kernel task or is it irrelevant. Guessing there's nothing there that can affect a lousy battery life
Kernel task is your Mac operating system.
 

Peter Franks

macrumors 68000
Original poster
Jun 9, 2011
1,781
41
is there any obvious sign when the MBP shuts off at 4% instead of going down to 1% that the battery is now even worse than it used to be?
 

GGJstudios

macrumors Westmere
May 16, 2008
44,468
854
is there any obvious sign when the MBP shuts off at 4% instead of going down to 1% that the battery is now even worse than it used to be?
No. Again, I encourage you to read the Battery FAQ which I posted.

Your "time remaining" indication is an ever-changing estimate, based on the current workload of your system. It will fluctuate up and down from minute to minute as your power demands change. It is not perfectly accurate, but only an estimate.
 

Peter Franks

macrumors 68000
Original poster
Jun 9, 2011
1,781
41
Fair do, it's just the first time it's happened like that since I've had it.
Don't suppose you'd know why the one step movie is taking longer than normal do you, for films of the same length. Up to 30 or so mins more than usual. The performance/high/best etc. is not changeable in one step is it? It does it for you I presume?
 

GGJstudios

macrumors Westmere
May 16, 2008
44,468
854
Don't suppose you'd know why the one step movie is taking longer than normal do you, for films of the same length. Up to 30 or so mins more than usual. The performance/high/best etc. is not changeable in one step is it? It does it for you I presume?
I don't understand what you just said. What are you talking about?
 

Peter Franks

macrumors 68000
Original poster
Jun 9, 2011
1,781
41
When burning a 1 hour 30 minute film to DVD it now takes longer than it used to. Is it because RW discs take longer to burn than normal +R discs.
 

GGJstudios

macrumors Westmere
May 16, 2008
44,468
854
When burning a 1 hour 30 minute film to DVD it now takes longer than it used to. Is it because RW discs take longer to burn than normal +R discs.
I haven't got a clue. It may have to do with whatever settings you have selected in the app you're using to burn.
 

Peter Franks

macrumors 68000
Original poster
Jun 9, 2011
1,781
41
Wouldn''t keep still!!!
Gives you rough idea... but they keep coming and going. What order are they normally in before I clicked CPU in the column descending, because they were static then. Weird

Image

Was I supposed to click bottom one too in the list?

Did anyone read anything from this as to why I've got such a lousy battery life, and now a dead charging extension lead as from today!...
 
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