The electricity drained by a device

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-1
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1answer
2k views

Charger problem for Phone purchased in US

I purchased Iphone 6 in US, and would be coming back to India. Which charger I should use here in India, as I know that there is a voltage difference in US and in India.
3
votes
1answer
478 views

How to disable the “this cable or accessory is not certified” message on iPhone?

The message "this cable or accessory is not certified and may not work reliably with this iPhone" pops up whenever I use a 3rd party USB cable for it. It's really annoying, because then I'd have to ...
0
votes
0answers
123 views

iMac will not boot up with built-in LCD connected, but will boot without it

When I press the power button on my iMac (Early 2008 24" A1225 EMC2211 MB325LL/A) it begins to start up, but halfway through the start chime it loses all power and needs to be unplugged before the ...
0
votes
1answer
60 views

Can a 3.7 Watt LiPo battery trigger the charging symbol on an iPhone?

I am trying to use a 3.7 Volt 1 Amp (so it's 3.7 Watts) Lithium Polymer battery to charge or at least trigger the charging symbol on an iPhone 5. I have charged the battery fully using the Lithium ...
0
votes
2answers
5k views

Power reserve mode - lightning bolt

I cant get the watch out of power mode. It has a lightning bolt on the screen. What does this mean?
0
votes
0answers
61 views

Power button, keyboard not functional after thermal place replacement (MacBook Pro 13, Late 2011)

After some searching on the internet, I have been struggling to reconnect the keyboard to the MacBook Pro after taking out the logic board to replace the aging thermal paste. I was following the ...
0
votes
1answer
26 views

Splice a 45W MagSafe 2 connector onto an 85W PSU?

I have an unused 45W MacBook Air MagSafe 2 PSU, and an 85W MagSafe 1 PSU that my dog chewed the connector off. I'm wondering if splicing the MagSafe 2 connector onto the 85W PSU would allow a MacBook ...
0
votes
0answers
109 views

Pinout and specs on 150W Cinema Display A1098 power supply?

I've inherited a 30" Apple Cinema Display. It's in great condition except for one thing: no power supply. I could pay $150+ for a used power supply on eBay, but -- with my past life as a ...
43
votes
10answers
79k views

Can I use 45/60/85W MacBook chargers interchangeably?

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
21 views

13" mid 2007 Macbook, battery / power supply issue (white, A1181 model)

So, I have mistreated my macbook somewhat and would like to repair the damage. The problem is, there is "no battery supply", the icon at the top bar is a battery with a cross through it. There are ...
0
votes
0answers
68 views

Macbook Pro logic board getting no voltage

Laptop: MacBook Pro 13" Retina Display Late 2013 Logic Board: 820-3476 I have been doing testing on my logic board with the board removed from the computer and just plugging in the charger. I had an ...
6
votes
4answers
82k views

How do you get the Apple Watch out of Power Reserve mode?

I got it into power reserve but can't figure how to resume normal mode. I have tried tapping and pressing the screen and holding both side buttons.
0
votes
1answer
98 views

How to eliminate noise on iPad analog/headphone output?

I'm a musician with a home studio. I've been wanting to incorporate my iOS devices (iPad 3, iPad mini retina, and iPhone 4s) into my music making for years, but only recently have synchronization and ...
1
vote
1answer
33 views

If I buy a power adapter from the online Australian Apple Store, will it match Australian outlets?

I want a power adapter for a MacBook Air that matches Australian outlets (without a separate adapter). It seems reasonable that if I buy such a thing from http://www.apple.com/au, it will have the ...
3
votes
2answers
84 views

Explanation for wrong charging wattage / slow charging?

I have a 2013 Retina MBP and a fairly new 85 W Magsafe 2 charger. But when I connect this charger to my Macbook and check in Battery Health, it claims that it is receiving only 49 W. Does anyone ...
0
votes
1answer
326 views

Macbook Pro (Mid 2012) Battery Not Charging

I have a Macbook Pro (Mid 2012) 13" unibody and having issues with a battery that is not charging. Here are the specifics: Battery is not charging Magsafe light not illuminating at all Macbook is ...
5
votes
1answer
425 views

Use caffeinate to prevent sleep on lid close on battery

The native caffeinate utility is not working to prevent my macbook from sleeping when I close the display. Instead, the system sleeps and various network services ( VPN, screenshares, VOIP calls, ...
0
votes
2answers
123 views

MacBook Pro battery will not charge even though cycle count is below max count

I haven't used my MacBook Pro (Mid 2011 version with non-removable battery) for over 6 months, as I was out of country. Now it only works on power connected and battery won't change. Symptoms I ...
1
vote
1answer
1k views

iMac sounds like it's starting up then shutting down immediately

I have an iMac. Since yesterday, it has been making sounds where it seems like a hard drive is starting up then shutting down immediately. However, that can't be possible of course because the ...
0
votes
0answers
31 views

Can a 15" Retina MBP running 10.11 (El Capitan) determine if the attached power source is using a MagSafe adapter?

I have a first generation 15" Retina MBP. Recently there have been times when it runs out of power even though I'm plugged in. I have tracked it down to charging being intermittent if anything but a ...
3
votes
2answers
48 views

Is it safe to discharge my body's static electricity onto my MacBook Pro?

Often in the winter (low humidity), getting up from and sitting down onto the seat at my desk, or taking off a jacket, and such will build up a static electric charge on my body. Sometimes I don't ...
4
votes
5answers
10k 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 ...
0
votes
0answers
36 views

iPad 2, IOS 8.x, power issues, freezes when screen turns off

My iPad 2 64GB non 3G has stopped working and need help diagnosing what component is broken. When I would click the power button to turn the screen off or let it auto-lock after 2 or so minutes, I ...
0
votes
0answers
37 views

plug in charger when using OR charge it when low battery

I am working in an office for 8 hours a day. And I am using a macbook pro retina 2015 during that 8 hours for work. What habit should I be use to treat the battery better. There are two choices for ...
0
votes
2answers
31 views

Current power consumption [duplicate]

Is there a way to know the current (or average power consumption) on OS X (a Mac Mini without battery). Preferred would be a command line tool but anything is OK.
1
vote
1answer
23 views

MacBook power cable with mounting holes

my question is, if there is MacBook power cable with mounting holes. I think better picture than thousand words, I mean this power cable end: with mounting holes, somehow like this:
0
votes
0answers
46 views

Macbook 13" mid 2009 not charging nor starting

I disconnected the battery (A1331) on my Macbook 13" white polycarbonate unibody to install a second SSD in place of the unused DVD. I was also upgrading the RAM, that's why I decided to ignore the ...
1
vote
1answer
2k views

USB Devices Disabled when no devices are connected

using iMac 5K OS 10.10.3 When there are no USB devices connected to iMac, it keeps showing this. I tried SMC resetting, booting through Safe Mode, and nothing is working to make this alert go away. ...
0
votes
1answer
116 views

How to prevent MacBook Pro from sleeping with turned off external display?

I have two displays connected to my MacBook Pro Retina 2015, running 10.10. It is connected to power, so it will not sleep once I close the lid. However, if I am doing long during calculations over ...
2
votes
1answer
92 views

Why doesn't a stripped/cracked MagSafe power cable shock?

Behold, the fate of all (poorly handled) MagSafe power cables: Why doesn't this shock me? I've read that MagSafe cables are low voltage, but I don't even get a tingle. Is there any danger of shock,...
0
votes
2answers
475 views

MacBook Pro - Only runs while MagSafe charger connected

My 2013 MacBook Pro only runs while the MagSafe power charger is connected. Model Number: A1425 (EMC 2672) When the charger is disconnected system immediately powers off (no shutdown). MagSafe ...
0
votes
0answers
17 views

power status of MBP 13" (Early 2015)

I have the hibernate mode set to 25 but I think the laptop is not hibernating when I close the lid. In earlier versions of MBP there used to be a LED light available on the right-hand side of the ...
2
votes
1answer
180 views

My (unbroken) iPhone won't turn on!

I have an iPhone 5. The only issue it's had is that the battery life wasn't so great as it once was... until now. Earlier the battery went flat and it switched to this screen Totally normal. So I ...
0
votes
1answer
48 views

Battery cannot charge fully

I replaced battery on my MBA mid 2011 (A1369). Here is the report by coconut(the same appears in system report): I bought no name battery from china and changed it personally (here they ask about ...
2
votes
4answers
9k views

Is it possible to charge my MacBook Air from a powerbank?

I recently bought a powerbank that has two USB outlets. It's great for charging my phone and iPad. Is it possible to charge my MacBook Air from the powerbank? If it's not possible to do this "out of ...
0
votes
0answers
29 views

What wattage of passthrough charging does the Lighting port enable for MFi devices?

I understand that with the "Made For iPhone" (MFi) program, you can do passthrough charging/powering. What wattage does this support?
1
vote
1answer
242 views

Can I unplug my Mac mini from power once it's in hibernate mode?

Suppose I want to work on my Mac mini here, reach a certain point in my work, then put it in hibernate mode and unplug the power. From what I understand the hibernate mode will save the status of the ...
1
vote
1answer
151 views

How to turn MacBook Air 2015 on if the power button is broken and I don't have tools to remove battery?

The power button on my macbook air 2015 is not functional and I don't have the correct screwdriver to open the back up and take out the battery. Is it possible to turn the laptop on without having to ...
1
vote
1answer
86 views

Fixing Mac Mini that uses 10x normal power in sleep mode

When I return to my Mac Mini in the morning, the case is warm to the touch, even though at that point it's been sleeping for hours with the display off. According to https://www.apple.com/environment/...
0
votes
0answers
11 views

MacBook Pro wouldn't charge but Apple ASP say it does

I had an issue that my MacBook Pro wouldn't charge (the LED on the charger didn't light up either) so Apple directly sent me out a replacement charger which also wouldn't change it (also same as the ...
1
vote
1answer
70 views

Magsafe charger behaving strange

I have a Macbook Pro 15 late 2011. The charger has started to act funky the last few days. What happens is that I connect it. Light shows as green on the connector and then switches to orange if it ...
4
votes
3answers
13k 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 ...
14
votes
11answers
24k 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 (i....
1
vote
0answers
176 views

MBP randomly waking from sleep/hibernation

I Have a Mid-2010 Macbook Pro. For many months I've been running a version of Yosemite without issues, but I just upgraded to 10.10.5 this week. I think I was running 10.10.3 before but I don't ...
1
vote
2answers
204 views

Are Apple's AC Cords for MagSafe (1+2) always the same?

I am getting a customised MacBook Pro Retina and it will have a AC Cord for Britain, but I need one for EU/Germany. So can I easily switch the AC Cord of my MagSafe 2 to a German one? Are these Cords ...
0
votes
3answers
300 views

85W MagSafe adapter has stopped working

Yesterday I noticed that my 85W MagSafe adapter had stopped working. I usually leave it plugged in constantly to my MacBook Pro (but not constantly on at the switch). The LED on the plug that ...
2
votes
5answers
6k views

How to fix a Macbook Pro (late 2013 model) with liquid damage?

I bought a refurbished 13" Macbook Pro (late 2013 model retina) from the Apple store website in Sept 2014. It worked great till last month, when I had some water leak out in backpack and get through ...
1
vote
1answer
152 views

Taking care of your Mac (put into a sleep or shutting down)

I have read this article but I would also like to know what are your thoughts and opinions on that point. I have my MPB with 16GB RAM and SSD drive. I would like to put my Mac into sleep rather than ...
2
votes
1answer
63 views

Why do I feel 'electricity' when bridging my macbook and a double insulated charger?

Let me set the scene: Macbook with metal case plugged into the wall with 3 pronged plug iPhone is plugged into an iPad charger with 2 prongs When I touch both my iPhone and the case of my macbook ...
0
votes
1answer
63 views

Is something on the IO logic board burnt or..?

yesterday, i plugged my macbook pro to charge, and my magsafe charger got a little burn where it connects to the magsafe charger (wall->magsafe). Now my macbook pro won't charge, no light, no nothing, ...