The electricity drained by a device

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0
votes
2answers
19 views

Overheating problem in MacBook Pro

I have MacBook Pro I bought 6 months ago. When I charge it, it overheats in the charging port and my charging adapter is also hot. Should I return it or keep using it?
3
votes
4answers
951 views

MacBook won't sleep while charging

An ongoing problem: my MacBook Pro (i5, 2.4ghz, 15") won't sleep while charging. I close the lid, but I don't get the pulsing "sleep light", it just stays fully illuminated. If I listen closely, I ...
0
votes
0answers
21 views

Battery indicator is stuck on one number

I have an iPhone 4s and the battery indicator is stuck on one number no matter how long I charge it. If I turn the phone off and then try to put it it on again it won't happen it will say the phone ...
3
votes
1answer
16k views

Is it safe to use my US iPhone/iPad charger with a simple European plug adapter?

I'm using the US wall adapter that came with my iPhone to charge it: When I travel to Europe, is it safe to use this with a simple US-European adapter, or do I need a transformer or some other ...
2
votes
5answers
124 views

No Batteries Available ?-How to Check battery health on MacBook Pro early 2011

A few days ago, I went on vacation and unplugged power cable from my MacBook Pro 13' early 2011 and then I got back home, the battery was not detected by OS and didn't charge. I then understood that I ...
1
vote
1answer
525 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?
1
vote
2answers
558 views

How to reduce MacBook Air 2013 1.7GHz CPU power consumption?

I'm seeking a way to reduce MacBook Air 2013 1.7GHz CPU power consumption -- or any MacBook for that matter -- to save battery life. I want to vary the CPU power consumption variably, so that I can ...
0
votes
2answers
6k views

iPad screen is black and won't turn on after charging and resetting

Yesterday I dropped my iPad 3 but luckily the screen did not crack. However the screen is now black and will not turn on. I can still here sounds from the iPad. How can I fix this? What I tried: ...
0
votes
3answers
84 views

Where are the power-on jumpers on a mid-2013 MacBook Air logic board?

I'm trying to locate the power-on jumpers on the logic board of mid-2013, 13" MacBook Air. Similar to this question, but for the newer model MacBook Air. I have disassembled and cleaned all ...
11
votes
3answers
2k views

Can I restore pre-Mavericks power key behavior?

Mavericks changed the behavior of my MacBook Air's power key to put the Air to sleep immediately when pressed briefly. Prior to Mavericks, the power key would summon the Shut Down dialog. As ...
2
votes
1answer
42 views

Can a thunderbolt cable transmit power?

Is it possible for thunderbolt to transmit power to or from a Macbook Pro. Perhaps to power/charge it or power/charge an external device?
2
votes
3answers
911 views

MacBook Pro shuts down when unplugged

I have a late 2008 MacBook Pro work computer. Here's the sequence of events: I fully charge the battery I unplug the Mac from the power cable The Mac immediately shuts down Before unplugging the ...
13
votes
3answers
9k views

Why does GPS on the iPhone use so much power?

I keep reading in articles that GPS on the iPhone, or any cell phone for that matter, uses a lot of power, but I've never heard an explanation of why. Why is this? The phone doesn't have to transmit ...
0
votes
1answer
125 views

My MagSafe to MagSafe 2 converter becomes extremely hot. Why?

Out of nothing, my MagSafe to MagSafe2 converter became extremely hot while charging. So hot, I could not even touch it. What could cause it? I've been using it so I can leave multiple old 85W ...
3
votes
3answers
3k views

Can I safely charge an iPhone 4S with a 5V 2A source?

I just bought a New Trent IMP99D external battery, to keep my phone alive while gaming during long-haul flights. It has two USB ports to connect to, one which supplies 1 amp at 5 volts, another which ...
17
votes
3answers
6k views

Is it OK to charge my iPhone with my iPad charger?

I have an iPhone 4 and an iPad. Since the iPad really charges best off the wall charger I keep it plugged in, but I usually just charge the iPhone off the computer. Although frequently if the iPad ...
1
vote
1answer
41 views

Will a MacBook with its lid closed (asleep) restart at the scheduled time?

I think the title says it mostly. Will a sleeping MacBook Air with the lid closed restart automatically at the time scheduled in the energy saver pane?
2
votes
2answers
249 views

Are L-shaped and T-shaped Magsafe 1 interchangeable? [duplicate]

I want to buy replacement Magsafe 1 cable for my MBP 17" Late 2011, and they are available in two options — L-shaped and T-shaped. My computer was shipped with L-shaped connector, however I want to ...
0
votes
2answers
208 views

Stop MacBook Pro from disconnecting network while downloading larger files

I am using a Gigabit Ethernet adapter (Apple) to connect to my network. While downloading larger files the MacBook Pro blanks the screen and disconnects the network even though it is active doing the ...
0
votes
3answers
2k views

App to shut down iPhone 3G

Is there an app to shut down my iPhone 3G? It's a non jailbroken iPhone and the power button isn't working anymore. So I need to shut it down with an app. Any advice?
2
votes
1answer
125 views

How much power can be drawn from the lightning connector by a external device?

How much power can be drawn from the iPhone/iPad lightning connector by a external device? Update: The use case is a audio-related device for iPhone/iPads. It would require around ~100 mA at 3,3 ...
1
vote
2answers
383 views

iPhone/iPad/iPod turn-off blocking?

Its possible to block turning off the iPhone/iPod or iPhone? For example, in case of loss, theft? The point is that the thief could not turn off the iPhone, so I could find iPhone through Find my ...
1
vote
1answer
410 views

iPhone 4 cannot be charged via power supply after iOS 7 update

Using an iPhone 4 and a original power supply (a1357) + cable (usb) i am not able to charge the phone. However connecting my phone to the pc (windows) it will be recognized and charge. This ...
0
votes
1answer
182 views

Correct battery voltage for new MacBook Pro battery

I have a 17" Macbook Pro (5,2 mid 2009, MC226LL/A) that has a battery that is in need of being replaced. I'm looking for the correct battery for it and have found various batteries that say they are ...
1
vote
1answer
54 views

Is there an app for iphone that can notify me whenever my mac powers on?

I would like to know if there was an app that can notify me whenever my mac is powered on. like IFTTT app. example if mac powered on then send a message to iphone.
0
votes
0answers
33 views

How to properly setup sleep mode?

Recently upgraded to Mavericks and faced one problem: my mac book pro mid 11 goes to sleep after some time... I set that monitor would go off after a minute and hdd never, that if i leave my pc at ...
2
votes
1answer
39 views

Why am I told to “Connect to a power source” for best results when installing/updating software?

I've experienced this when installing or updating a number of applications, most recently Logic Pro X. What's the reasoning behind this?
1
vote
1answer
37 views

Lots of weird stuff happening today

So I'll just list the symptoms I've experienced in the last few hours, so far I can't seem to find a pattern, suffice to say the macbook is virtually unusable for my purposes. It's a 2010 Macbook ...
2
votes
2answers
194 views

Can I charge my Samsung Omnia W with MacBook Pro USB port?

Currently, I am using a Samsung Omnia W and mostly I am using my MacBook Pro's USB port for charging it. Is it fine for charging the battery in the mobile phone? Sometimes, I have received a 'high ...
0
votes
0answers
80 views

How do I get data off a iPhone 3GS which just shows a black screen?

iPhone was working fine then few hours later had "black screen". Cannot power-on now. On advice of Apple Store, I reset the device (held sleep/wake button and the home button for 10 seconds) and ...
7
votes
6answers
27k 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 ...
0
votes
1answer
1k views

iPod 5 charger isn't working! What do I do?

I have A ipod 5. Every time I go to charge it with a dynex or apple charger it doesn't charge. The bar stays red for over an hour. I'm thinking that I have a short in my charger. I don't know what to ...
2
votes
2answers
1k views

Apple charger port magnet has lost it's pull

My friends laptop was dropped and fell directly on the power charging connector as it was connected to the charger. Now the port still works, but the strength of the magnet that holds the connector ...
3
votes
7answers
4k 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 ...
31
votes
9answers
39k 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
63 views

How to charge the MacBook Pro from 12 Volts?

Aim: I would like to charge my MacBook Pro (MBP) form a 12V lead-acid battery. However there are no official chargers from Apple for that purpose. There exist quite some alternative products on the ...
3
votes
2answers
4k views

Monitoring power consumption on Mac

The Android OS monitors the power consumption of running apps and hardware (display). As you may guess, this is a useful feature as it allows to track down energy greedy apps. Is there an application ...
0
votes
1answer
117 views

Is there a way to view and control the powerstate of the discrete GPU on a 2011 MBP in OSX?

I noticed that running with the discrete GPU uses more power and generates more heat. I just need the discrete GPU to drive an external monitor, I'm not concerned about performance. By controling the ...
0
votes
4answers
389 views

Macbook Air power saving with Thunderbolt to Gigabit adapter

I am considering buying a Thunderbolt to Gigabit adapter to save my MBA power consumption as I can shutdown the Wifi, assume it use a lot of power. Anyone tried before and it works? How many % of ...
2
votes
3answers
3k views

Out of warranty MBP ,Burned Magsafe port and frayed charger cable - repair option and cost?

I have a MBP 15" 2011 model and has is the burned magsafe port (leftmost pin melted) which i noticed today. The connector gets too hot sometimes ( but remains ok when I charge in sleep mode). ...
1
vote
0answers
359 views

Dim LED on Magsafe, Macbook Pro won't boot

I have a Macbook Pro late 2008, and today, it suddenly decided to stop booting. The battery level is very low, and connecting the adapter to it shows a very dim green light on the Magsafe connector. ...
1
vote
6answers
6k 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 ...
10
votes
2answers
346 views

How does Apple calculate the energy consumption of a process in OS X Mavericks

In OS X Mavericks you can monitor the energy consumption of different processes in the "Activity Monitor"-App. Also there will be a menu bar icon which lists the most energy consuming applications ...
0
votes
0answers
19 views

Any Apple device that uses UC-E6 plug?

I have an in-car charger left after sold GPS localizer. According to Wikipedia, it uses "UC-E6 proprietary (non-USB) plug" (second to the left on this photo). I would like to know, if anyone heard ...
0
votes
0answers
57 views

Macbook camera frequently disconnects (USB power issue?)

I have a Macbook Air (mid 2012) and quite often I go to use the camera, and the computer can't detect a camera connected. This is strange, because there is a camera built into the machine itself. ...
7
votes
7answers
9k 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 ...
3
votes
1answer
869 views

Magsafe light occasionally turns off while plugged in

Every once in a while, the green light on my Magsafe adapter will turn off, but the computer will indicate that it's still running off of AC power. If I unplug the adapter from the computer and then ...
1
vote
1answer
113 views

IOS 7 Power Drain

What settings minimize power loss on a 4S? I upgraded to IOS 7 and have noticed a signiicant power drain
6
votes
2answers
483 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 ...
0
votes
1answer
84 views

Charge iOS device through mains whilst using data cable with laptop

Take two Apple data sync wires: Cable 1, which connects the iPad to a laptop USB port, and Cable 2, only connected by itself to an iOS data charger socket plugged into the mains, ready to ...