The electricity drained by a device
0
votes
0answers
14 views
Macbook randomly shuts down without on charge (even at ~90% full)
I'm having a real issue with my Macbook (white, late 2009 version, running Lion OS X). It was about since 2 weeks ago or so, my Macbook would just randomly shut down, I lost a couple unsaved files ...
8
votes
8answers
3k views
How to retrieve current wattage info on OS X?
Is there a way to retrieve the current watt usage info on OS X Snow Leopard? I'm using mid-2010 iMac, so I'm not looking for just battery-related apps.
Does OS X even monitor power usage? Do I need ...
2
votes
1answer
33 views
No power through USB for Roland A-49
I just plugged my Roland A-49 to my MacBook Pro (Early 2011 2.3 GHz). The MIDI keyboard would have its power supplied via USB, but it has no power. The specification says it needs 98 mA current, which ...
1
vote
1answer
369 views
Why do I have to reboot my iMac and Wacom Cintiq after sleep?
I have an iMac and a 24 inch Wacom Cintiq. When I put the iMac to sleep, it freezes and I have to restart both the iMac and the Wacom Cintiq.
How can I get around this?
5
votes
1answer
356 views
Xserve shuts itself off and boots at will
Okay, there's a lot of smart Mac guys here, so lets see if any of you can figure out this stumper.
Our Xserve G4 (RackMac1,1) went incommunicado a few years ago was left in this state until I pulled ...
25
votes
9answers
27k views
Can a 60W MagSafe power adapter work interchangeably on a Macbook Pro that “requires” an 85W adapter?
I have a 13" Macbook Pro that came with a 60W power adapter and a 15" Macbook Pro that came with a 85W power adapter. Can I use either adapter with either laptop? There seems to be disagreement in the ...
0
votes
0answers
86 views
Quickly dim the iPod Touch by hitting the power button twice on the lock screen?
I've always wondered if this was a feature or not. When I'm on my iPod Touch's lock screen, then I hit the power button twice, the first hit will sleep the device, the second will wake it again but ...
1
vote
2answers
539 views
Will a MacBook Pro (15-inch, Mid 2010) power up in clamshell mode?
Although part of my problem is covered here - Powering on while the lid is closed in clamshell mode, it alone doesn't solve my query.
I'm trying to turn my MBP into a server, and because of that I ...
7
votes
3answers
4k views
Can i use my old MacBook charger on my new Mac?
I have a 2011 15" MBP, that uses a 85W power supply.
My old 2008 MBP 15" also has a 85W power supply, but I cannot get it to work. Shouldnt it? Its the same watt power, and the adapter fits.
0
votes
1answer
83 views
Macbook Air 1,1 power consumption
I have the original MBA, and I have extremely high power consumption - see the screenshot (screenshot got while TextEdit only was running)
Is is normal for original MBA?
1
vote
1answer
45 views
know how many watts a USB device is consuming
I know it's possible to do some electric hack to know how much current a device is using... but that would be a 1 time usage so it would be a waste of money and parts.
Is it possible to know that ...
1
vote
1answer
6k views
How to change power savings settings on iPad 2, iOS 4.3.3
After a few minutes, if I haven't touched the iPad 2's screen, it goes dim and then turns off. I suppose this is a power savings behavior; however, when it is connected to my computer I don't want it ...
0
votes
0answers
19 views
Powerbank suggestions for an iPhone
I'm new to the powerbank discussion and would like to know what people are using/recommending in terms of a backup battery supply for their iPhone?
Thanks again for the input
4
votes
5answers
15k views
“USB device drawing too much power” error on startup with no devices connected
Since upgrading to Lion, I get this error every time I start up:
I've read the answers suggested here, but they seem to indicate that it's the presence of a second device that's causing the ...
1
vote
2answers
68 views
Electricity coming through screws, USB, and headphone jack on 2009 MacBook
I've seen some online threads and at least one StackExchange question on this, but the answers don't seem to apply to my situation.
I have a 2009-vintage white 13" MacBook that's always been in great ...
1
vote
1answer
60 views
Will one power adapter work with all shipping MacBook Air and Pro as of March 2013?
I have a Late-2008 Macbook White (MacBook4,1) model, and my AC Adapter broke.
Now I want to buy replacement adapter, but since I am going to upgrade to a MBP13 or MBP15 in the next 1-2 years, I want ...
0
votes
1answer
67 views
What are some effective ways to save power when using my MacBook Pro?
I have an Early 2011 MacBook Pro (Core i7, 8GB RAM) with Mountain Lion (OS X 10.8.2).
What are some effective ways to save power? I am looking to maximise use of the battery - from a full charge - on ...
1
vote
1answer
39 views
Which Power Adapter is the correct one for Powerbook G4 15inch FW800 - 45watts or 65watts
I have a Powerbook G4 15inch FW800 with a 45watts Apple style power adapter. Recently it would not boot up. I removed the battery and it did. However after a shutdown, later on it did not boot up ...
6
votes
4answers
3k views
Does an iPad consume more battery power when there are multiple applications open?
Does an iPad consume more battery power when there are multiple applications open compared to let's say, having only one application resident in memory?
If there are differences between the ...
16
votes
5answers
7k views
iPad displays “Not Charging” when plugged into USB ports. What can I do?
When I plug my iPad into my computer's USB ports, the iPad battery area displays "Not Charging".
I understand the iPad requires more wattage to charge compared to an iPhone or iPod, as evidenced by ...
1
vote
0answers
1k views
iPad 4 not charging solution with usb 3.0 dual ports Y adapter
Just recently picked up an iPad 4. Saw that it specifies "not charging" when plugged into the usb port. Saw that it is a common issue due to usb power. I have usb 3.0 ports on my desktop so I tried ...
1
vote
2answers
214 views
Transporting from home to work (~10 min by car), should I just make my MacBook Pro sleep, or shut it completely down first?
I just got a new MacBook Pro, and is looking at how the power modes work, and according to this article: About Energy Saver sleep and idle modes in Mac OS X, making it sleep by closing the lid (say) ...
0
votes
1answer
151 views
Sleep button broken. How do I find out which part is affected?
The sleep/power button of my iPhone 4 is broken; it suddently didn't really "click" anymore and just hardly reacted on my actions. For some hours by clicking really firm it still worked, but then the ...
1
vote
1answer
265 views
How much power does Apple TV use on standby?
I just bought a third-gen Apple TV, and I don't want to have to into Settings to put it to sleep every time I'm done using it. It seems it won't fall asleep automatically for quite some time, so I'd ...
0
votes
0answers
99 views
Macbook Pro Mid 2010 not powering up after smc update
Macbook Pro Mid 2010 after SMC update 1.7 shuts down and now by pressing power button front light turning on for a few seconds, optical drive makes it's usual noise but no activity on monitor happens ...
1
vote
0answers
151 views
Fluctuating voltage on Magsafe charger
I got two Apple Magsafe charges, one for which I needed to cut and rejoint the cables. The fix went well and now when I plug in the charger it works and charges my Macbook Pro.
Though when I measured ...
2
votes
4answers
2k views
Is my MagSafe covered under my MacBook's AppleCare?
I have a white 2010 MacBook, and the outer casing for the wire on the MagSafe power adapter has developed a small split. Is this something that may be covered under my MacBook's AppleCare? Is it ...
5
votes
3answers
5k views
What is the iPhone's standby policy regarding WiFi and 3G?
I have an iPhone 4s with the latest iOS.
It seems that when I wake it up from standby, it switches from 3G (or EDGE) to WiFi. Judging from that, I suspect it turns off WiFi when in standby, and only ...
3
votes
5answers
2k views
What would happen if I use a Macbook Air Powersupply with a 15" MacBook Pro Retina (or vice versa)
My girlfriend has a Macbook Air. The power supply is smaller and lighter than the Pro. It has an output of 14.85V and 3.05Amps. My Pro Retina has a power supply that is 20V and 4.25 Amps.
Both ...
0
votes
1answer
127 views
MacBook Pro battery charging stops early
I have a Mac Book Pro 15" over a year now. I'm having a problem with charging the battery.
During work it stops charging and goes to battery powered mode. If I switch to a different power source it ...
0
votes
2answers
2k views
Macbook Air short Battery Life
I purchased Macbook Air 13 in late 2012. It is advertised as having 7 hour battery life. After a few months of use, with maximum charge it gives me only 2 hours.
Is this normal?
1
vote
0answers
54 views
How to identify the 3 thermals sensor connectors from the mac mini motherboard?
I opened my mac mini to switch the DVD with another hard drive and I forgot to take a picture with the ways the 3 thermal sensors are connected.
THeir codes on the mainboard look like:
J5550 - left ...
2
votes
2answers
160 views
iMac + uTorrent energy saving
I want to keep my iMac on tonight and seed/leech torrents. I usually leave it there until, after 5/10 min or so, the iMac turn the monitor off. I can still hear the hd working.
uTorrent has an option ...
1
vote
4answers
1k views
Best replacement for MacBook Air MagSafe 2 cable (OEM or 3rd party?)
My MagSafe 2 cable for my 2012 MacBook Air stopped working. Took it into Apple store where I had bought my MacBook Air, and sure enough it was the excessive cat chew marks that had degraded it*. Can ...
2
votes
1answer
437 views
How can I keep my Mac awake AND locked?
I want to leave my Mac awake overnight so it syncs 4GB of data from Dropbox. I need to prevent the machine from going to sleep because that pauses the Dropbox sync
I've been using Caffeine to keep ...
10
votes
1answer
169 views
Macbook started to consume battery more quickly
This seemed to happen after I did several things at once (all of which I have since reversed in trying to track this down):
installed a (Crucial M4) SSD drive (replacing my old SATA 5400 RPM drive),
...
1
vote
1answer
214 views
How to use new Macbook Air's power adapter with previous generation MacBook Pro?
I have a MacBook Air (Late 2012), which has the new Magsafe 2 power connector.
I would like to use the power adapter with my 15" MacBook Pro (Mid 2010).
Is there an adapter for it? A quick search on ...
1
vote
1answer
153 views
Can I still use a damaged Magsafe power cable?
My rabbit chewed on my Magsafe 2 power adapter. I can see the silvery wire where the rabbit peeled off the isolation yet it still works.
Can I just duct tape it and continue using it or is there any ...
1
vote
1answer
1k views
Force hibernate (deep sleep) in OSX 10.8(.2)
How can you force the computer (in this case a laptop [rMBP]) into the "hibernate" state where it writes the RAM to the HDD/SSD so that the battery can last for the advertised 30 days.
I know that ...
0
votes
3answers
4k views
MacBook Pro 2011 logging itself out after a period of inactivity
when I am not using it, at some point, every day, my MBP tries to log out on its own. When I 'wake it up' I can see message windows about "applications aborting logout", obviously because some ...
7
votes
1answer
403 views
Phone-only mode on iPhone
Is there a way to switch the iPhone’s functionality to a phone-only mode. In this mode only incoming (and possibly outgoing) calls and SMS messaging would be activated. All other services (location, ...
0
votes
1answer
95 views
Does shutting off a modem daily damage it? [closed]
I switch off the power bar which has my modem and computer plugged into it a few times per day. Two days ago, a technician changed the old wiring since my Internet completely stopped working.
I am ...
4
votes
3answers
2k views
How do I locate applications that drain my battery on a MacBook Pro?
I purchased a new Macbook Pro and have since downloaded a ton of applications and add ins. I think some of these apps are responsible for draining my battery too quickly.
How do I identify what ...
6
votes
5answers
4k views
How can I avoid my MacBook Pro giving me minor shocks?
The aluminum Macbook Pro gives a mild shock when connected to a wall socket and charging. It only happens when I'm, for example, not wearing shoes or slippers and my feet are resting on the ground ...
0
votes
2answers
478 views
Should I use an extension power cord instead?
I have the following Apple MacBook Pro Power adapter:
60W MagSafe PV85 Ouptput 16.5v--3.65A ADP-60AD T
Model No. A1344
Instead of buying a Power Adapter, is it ok to buy an Extension power ...
1
vote
2answers
1k views
Retina macbook max USB power output
Could someone tell me how much Ampere the retina macbook pro can deliver over usb. I thought that one should be able to charge an ipad with a retina macbook which would mean, that it should be about ...
1
vote
0answers
158 views
Pop-up notification (or notification center notification) for battery in OS X Mountain Lion
I don't have the battery/AC icon turned on because, for the most part, there's no reason for it to be there - I typically get cord-free 5 or so hours at a time, so it seems redundant.
Still, ...
2
votes
2answers
2k views
Does having Bluetooth enabled draw extra power when no devices are connected?
I generally turn off Bluetooth on my Macs and iOS devices when I'm not actively using a Bluetooth device. My assumption is that this saves battery life, but I realize that I have no fact to back that ...
0
votes
0answers
192 views
Charging suddenly stopped
After opening the lid on my 2010 MacBook Pro, the machine indicated it was not charging yet and the MagSafe light was amber.
I followed the SMC instructions, installed the Java update, restarted, and ...
1
vote
1answer
681 views
How can I force my laptop to shut down when I close the lid?
I'd like my Mac laptops to shut down completely when I close the lid. This is partly for convenience and partly for security reasons.
I couldn't find a way to do this in the System Preferences (OS ...
