Go Back   MacRumors Forums > Apple Hardware > Notebooks > MacBook Pro

Reply
 
Thread Tools Search this Thread Display Modes
Old Jan 29, 2008, 05:46 PM   #1
thechidz
Banned
 
Join Date: Jul 2007
Location: New York City
run macbook pro without battery???

since I use my macbook pro primarily as a desktop replacement, is it possible to run it without the battery therefore saving the health of the battery???
thechidz is offline   0 Reply With Quote
Old Jan 29, 2008, 05:50 PM   #2
Consultant
macrumors G5
 
Consultant's Avatar
 
Join Date: Jun 2007
Quote:
Originally Posted by thechidz View Post
since I use my macbook pro primarily as a desktop replacement, is it possible to run it without the battery therefore saving the health of the battery???
Yes it will run without battery.

Laptop will run cooler, due to certain operation not running at full power with battery removed. There is a link on this thread to the info:
http://forums.macrumors.com/showthread.php?t=414106
Consultant is offline   0 Reply With Quote
Old Jan 29, 2008, 05:54 PM   #3
heatmiser
macrumors 68020
 
Join Date: Dec 2007
Quote:
Originally Posted by thechidz View Post
since I use my macbook pro primarily as a desktop replacement, is it possible to run it without the battery therefore saving the health of the battery???
You can run it, but your processors will be crippled. It's one of the "features" of Apple. The adapter doesn't provide enough power to fully power the laptop without the battery.
__________________
Always on the lookout for longer battery life...
heatmiser is offline   0 Reply With Quote
Old Jan 29, 2008, 05:57 PM   #4
gr8tfly
macrumors 603
 
gr8tfly's Avatar
 
Join Date: Oct 2006
Location: ~119W 34N
Quote:
Originally Posted by thechidz View Post
since I use my macbook pro primarily as a desktop replacement, is it possible to run it without the battery therefore saving the health of the battery???
You can, but it will run at 1GHz.

As for how it affects battery life, I don't believe it will affect its total life span. You can run off battery every month or so, but even the effect of that is up to debate.

I've been running mostly in "clamshell" mode, with ACD and BT mouse/keyboard for over 6 months now. I use it on battery every week or two (actually using it portable), then swap the batteries every so often. I think their total life will be the same, though, no matter what I do.
__________________
Macs from 1984 to 15" Retina MBP 768GB SSD 16GB RAM, from Newton to iPhone 5 S⃣ , iPods, and tv (3). 128GB Wifi iPad Air
gr8tfly is offline   0 Reply With Quote
Old Jan 29, 2008, 05:58 PM   #5
Consultant
macrumors G5
 
Consultant's Avatar
 
Join Date: Jun 2007
That does not mean it's crippled. It's still faster than most laptops out there even when running without battery.
Consultant is offline   0 Reply With Quote
Old Jan 29, 2008, 06:00 PM   #6
iToaster
macrumors 68000
 
iToaster's Avatar
 
Join Date: May 2007
Location: In front of my MacBook Pro
Yeah, it'll run at half speed, but lemme tell you, I don't use my battery a lot, I've only got 23 cycles on mine, it's about 6 months out, and health says 93%. I get the feeling I should calibrate it, but using your battery is a good thing, it keeps it healthy I think.
__________________
MacBook Pro | 2.66 i7 | 8GB | 1TB | Matte HR | iPhone 5S | 64 GB | iPad WiFi | 64 GB
iToaster is offline   0 Reply With Quote
Old Jan 29, 2008, 06:02 PM   #7
heatmiser
macrumors 68020
 
Join Date: Dec 2007
Don't pay so much attention to the battery; it's going to die whether you use it or not. Enjoy it!
It's not worth running your laptop at 1ghz in order to squeeze a few more cycles out of the battery.
__________________
Always on the lookout for longer battery life...
heatmiser is offline   0 Reply With Quote
Old Jan 29, 2008, 06:14 PM   #8
aiterum
macrumors 6502
 
Join Date: Nov 2007
Location: United States
Send a message via AIM to aiterum
its always easy to buy another battery anyway
__________________
Ipod Nano 2nd gen 2gb
2.4Ghz 200GB HD Penryn MBP Pro 256MB 8600GT OSX/XP 4GB RAM
aiterum is offline   0 Reply With Quote
Old Jan 29, 2008, 06:16 PM   #9
Techguy172
macrumors 68000
 
Join Date: Feb 2007
Location: Ontario Canada
Quote:
Originally Posted by Consultant View Post
That does not mean it's crippled. It's still faster than most laptops out there even when running without battery.
What laptop's have you been using?
__________________
Macbook 2.2 4GB 320GB 7200 Sony DSLR-A200
Follow Me On Twitter
Techguy172 is offline   0 Reply With Quote
Old Jan 29, 2008, 06:19 PM   #10
heatmiser
macrumors 68020
 
Join Date: Dec 2007
Quote:
Originally Posted by Techguy172 View Post
What laptop's have you been using?
Thank you. The idea that a 1ghz laptop is "still faster than most laptops out there even when running without battery" is laughable.
__________________
Always on the lookout for longer battery life...
heatmiser is offline   1 Reply With Quote
Old Jan 29, 2008, 06:30 PM   #11
a4abt
macrumors regular
 
Join Date: Jan 2008
Location: Miami
Instead of removing the battery, you should leave it there and run on the battery once in a while to drain it!
__________________
rMBP i7 w/27" TBD -- Mac Mini i5, 24" ACD -- iPad (3rd Gen) -- iPhone 5
a4abt is offline   0 Reply With Quote
Old Jan 29, 2008, 06:49 PM   #12
NKA
macrumors member
 
Join Date: Jan 2008
Thumbs down

Quote:
Originally Posted by heatmiser View Post
You can run it, but your processors will be crippled. It's one of the "features" of Apple. The adapter doesn't provide enough power to fully power the laptop without the battery.
That's an undelievable design flaw IMHO. You need a battery to run a MBP from the mains or you get penalized. It sounds laughable if it was not true. No wonder the power supplies are so small.

My current 4 year old laptop has about 2 minutes of battery life, and the battery is only every used once in a blue moon. So to save the battery when I got my MBP, this time I was going to remove it unless I needed it. This sucks big time!!
NKA is offline   0 Reply With Quote
Old Jan 29, 2008, 07:28 PM   #13
Radio Monk33
macrumors 6502
 
Join Date: Dec 2007
Quote:
Originally Posted by Consultant View Post
That does not mean it's crippled. It's still faster than most laptops out there even when running without battery.
Seriously? Please explain.

Lemme guess, Magical Steve Jobs Power and the Holy Apple Trinity's powers of superiority over anything made by heathen PC manufacturers, provides more efficient processing power..
Radio Monk33 is offline   0 Reply With Quote
Old Jan 29, 2008, 08:37 PM   #14
thechidz
Thread Starter
Banned
 
Join Date: Jul 2007
Location: New York City
Quote:
Originally Posted by a4abt View Post
Instead of removing the battery, you should leave it there and run on the battery once in a while to drain it!
thats what ive been doing... I think I will just keep doing that...

its just that battery health is already down to 95% after only 20 cycles...
thechidz is offline   0 Reply With Quote
Old Jan 29, 2008, 08:48 PM   #15
Enyzam
macrumors newbie
 
Join Date: Jan 2008
Quote:
Originally Posted by Radio Monk33 View Post
Seriously? Please explain.

Lemme guess, Magical Steve Jobs Power and the Holy Apple Trinity's powers of superiority over anything made by heathen PC manufacturers, provides more efficient processing power..
I laughed
Enyzam is offline   0 Reply With Quote
Old Jan 30, 2008, 06:16 PM   #16
verticalled
macrumors newbie
 
Join Date: Jan 2008
Location: poland
1GHz? Then it has to be software/Mac OS related issue, cause on Bootcamp XP I cant spot any difference (and 2.2/1 is a huuge difference running Crysis). I remove battery cause the fans work less as it seems the whole machine seems to give away heat faster that way.
verticalled is offline   0 Reply With Quote
Old Jan 30, 2008, 06:33 PM   #17
gr8tfly
macrumors 603
 
gr8tfly's Avatar
 
Join Date: Oct 2006
Location: ~119W 34N
Quote:
Originally Posted by verticalled View Post
1GHz? Then it has to be software/Mac OS related issue, cause on Bootcamp XP I cant spot any difference (and 2.2/1 is a huuge difference running Crysis). I remove battery cause the fans work less as it seems the whole machine seems to give away heat faster that way.
Hardware Monitor and others display the actual clock speed. Both cores are still operating, but at 1GHz (test done on 17" 2.33GHz MBP).
http://docs.info.apple.com/article.html?artnum=305336

I'm not familiar with Crysis, but I presume it's more GPU intensive, than CPU. I'm not sure about the effect on GPU performance w/o battery in OS-X.

I would guess the lower fan speed and less heat are a result of the slower CPU clock [in Windows].
__________________
Macs from 1984 to 15" Retina MBP 768GB SSD 16GB RAM, from Newton to iPhone 5 S⃣ , iPods, and tv (3). 128GB Wifi iPad Air

Last edited by gr8tfly; Jan 30, 2008 at 06:36 PM. Reason: windows
gr8tfly is offline   0 Reply With Quote
Old Jan 30, 2008, 06:36 PM   #18
heatmiser
macrumors 68020
 
Join Date: Dec 2007
Quote:
Originally Posted by verticalled View Post
1GHz? Then it has to be software/Mac OS related issue, cause on Bootcamp XP I cant spot any difference (and 2.2/1 is a huuge difference running Crysis). I remove battery cause the fans work less as it seems the whole machine seems to give away heat faster that way.
Install something like Notebook Hardware Control when you're in XP, and you'll see the speeds. They're throttled down.
__________________
Always on the lookout for longer battery life...
heatmiser is offline   0 Reply With Quote
Old Jan 30, 2008, 07:02 PM   #19
yippy
macrumors 68020
 
yippy's Avatar
 
Join Date: Mar 2004
Location: Chicago, IL
Send a message via AIM to yippy
That can't be true, the power adapter has to have enough power run the computer at full without help from the batter.

Think about it, you can charge the battery and use the computer at full speed at the same time. That means that the power adapter CAN supply MORE power than the laptop needs.

However, I wouldn't run without a battery because it would be playing with fire. If you pull the cord (easy to do with Magsafe) your computer shuts off like a power outage to a desktop. Not my idea of a good way to take care of your computer.
yippy is offline   0 Reply With Quote
Old Jan 30, 2008, 07:04 PM   #20
skyrider007
macrumors 65816
 
skyrider007's Avatar
 
Join Date: Aug 2007
Location: Bangkok
Quote:
Originally Posted by iToaster View Post
Yeah, it'll run at half speed, but lemme tell you, I don't use my battery a lot, I've only got 23 cycles on mine, it's about 6 months out, and health says 93%. I get the feeling I should calibrate it, but using your battery is a good thing, it keeps it healthy I think.
wow, we have exactly the same stats!
__________________
15.4" MacBook Pro 2.0GHz i7 iPad 3G iPod Touch 16GB (2G)
BlackBerry Bold 9780 (white)
skyrider007 is offline   0 Reply With Quote
Old Jan 30, 2008, 07:04 PM   #21
heatmiser
macrumors 68020
 
Join Date: Dec 2007
Quote:
Originally Posted by yippy View Post
That can't be true, the power adapter has to have enough power run the computer at full without help from the batter.

Think about it, you can charge the battery and use the computer at full speed at the same time. That means that the power adapter CAN supply MORE power than the laptop needs.
http://docs.info.apple.com/article.html?artnum=305336

This isn't something we're just saying; you can see it right @ Apple.
__________________
Always on the lookout for longer battery life...
heatmiser is offline   0 Reply With Quote
Old Jan 30, 2008, 08:45 PM   #22
gr8tfly
macrumors 603
 
gr8tfly's Avatar
 
Join Date: Oct 2006
Location: ~119W 34N
Quote:
Originally Posted by yippy View Post
That can't be true, the power adapter has to have enough power run the computer at full without help from the batter.

Think about it, you can charge the battery and use the computer at full speed at the same time. That means that the power adapter CAN supply MORE power than the laptop needs.

However, I wouldn't run without a battery because it would be playing with fire. If you pull the cord (easy to do with Magsafe) your computer shuts off like a power outage to a desktop. Not my idea of a good way to take care of your computer.
It has to do with surge current. The battery acts like a large capacitor. Although the power supply can handle the continuous current requirements of the MBP, there could still be surges (such as harddrive spinup) which could exceed the capabilities of adapter. With the battery installed, it can provide the extra current during those surges.
__________________
Macs from 1984 to 15" Retina MBP 768GB SSD 16GB RAM, from Newton to iPhone 5 S⃣ , iPods, and tv (3). 128GB Wifi iPad Air
gr8tfly is offline   0 Reply With Quote
Old Jan 30, 2008, 10:41 PM   #23
yippy
macrumors 68020
 
yippy's Avatar
 
Join Date: Mar 2004
Location: Chicago, IL
Send a message via AIM to yippy
Oh, I see, it can supply enough for use plus battery but not enough for spikes or if you are drawing as much power as possible (probably need usb and firewire powered things plugged in and a DVD going). So they clock it down to guarantee you won't overdraw even though 99% of the time you won't.
yippy is offline   0 Reply With Quote
Old Jan 30, 2008, 10:51 PM   #24
kingicon1
macrumors newbie
 
Join Date: Jul 2002
Quote:
Originally Posted by yippy View Post
However, I wouldn't run without a battery because it would be playing with fire. If you pull the cord (easy to do with Magsafe) your computer shuts off like a power outage to a desktop.
Thats exactly what I was going to say. I do like the magsafe connector, but it comes out way to easily.
kingicon1 is offline   0 Reply With Quote
Old Jan 30, 2008, 10:54 PM   #25
CJRhoades
macrumors 6502
 
Join Date: Dec 2007
Location: Lafayette, IN
Hmmm... If I pulled the battery out of my TiBook, would it also run at half speed? Or is this "feature" only on newer books?
CJRhoades is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Hardware > Notebooks > MacBook Pro

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
Apple Releases Battery Fix SMC Firmware Update for MacBook Air, MacBook Pro and Retina MacBook Pro MacRumors Mac Blog Discussion 55 Jun 19, 2014 12:39 AM
Run Macbook Pro without Battery and Hard Drive drtanz MacBook Pro 5 Apr 30, 2014 09:30 AM
How often do you run your MacBook on its battery? Poll Woodcrest64 MacBook Pro 31 Nov 26, 2012 07:00 PM
How often do you run your Macbook on its battery? Woodcrest64 MacBook Pro 1 Nov 23, 2012 11:42 PM
Macbook pro 13 won't run on battery help. triplelucky MacBook Pro 4 Oct 22, 2012 08:52 PM

Forum Jump

All times are GMT -5. The time now is 05:30 PM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC