The electricity drained by a device

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0answers
10 views

Macbook pro never goes to sleep

I got a brand new mid-2015 macbook pro 15", OSX 10.11.3. Display never turns off even it is configured to turn off after 10 mins in power adapter AND in battery mode. Screen saver (aerial) stays ...
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2answers
20 views

Battery not charging? (Even after SMC reset)

So, I've seen a couple topics like this that already exist, but none solved my problem. I plug in my charge to my 13-Inch MacBook Air, Early 2015, and the LED light did not turn on, and the battery ...
1
vote
1answer
44 views

Is it safe to swap the “duckhead” connector from an old power supply to a new MagSafe 2?

Working from home today and I just pulled my macbook pro out to realize that I left the "duckhead" part of my magsafe 2 power supply (85W) sitting on my desk when I left the office last night. I ...
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0answers
25 views

2011 Macbook Pro won't boot unless I SMC reset and do a combination of attaching battery and charger

From what I read, on this model of MacBook, an SMC reset is done by removing the battery and holding the power button down for 5 seconds with no charger or battery attached. I tried the other method ...
1
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2answers
22 views

Make Mac boot upon plugging in power

I have a MacBook and I'd like it to boot automatically upon plugging it into a power source. Is there a way to do this?
3
votes
1answer
136 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
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0answers
36 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
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1answer
32 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 ...
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0answers
17 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
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1answer
21 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 ...
1
vote
1answer
77 views

Mac does not automatically restart when power is re-applied after `shutdown -hu now`

I want to have a Mac Mini automatically boot when power is applied, as I cannot conveniently reach its power button, because it resides inside an art installation, where the power will be shut down ...
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0answers
20 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 ...
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0answers
11 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
30 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 ...
0
votes
1answer
38 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
32 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
55 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 ...
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0answers
22 views

MacBook Pro Boots only with a pressed key

I'm having a bizarre issue with my early 2011 Macbook 15'. I grabbed it today without battery power só the first thing I diz was to plug the MagSafe adapter. Afterwards I pressed the power button. It ...
3
votes
1answer
72 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
1answer
93 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 ...
0
votes
2answers
75 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 ...
0
votes
0answers
20 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 ...
2
votes
2answers
28 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 ...
0
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0answers
27 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
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0answers
24 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
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2answers
26 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
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1answer
21 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
34 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 ...
2
votes
1answer
45 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 ...
0
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0answers
15 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
2answers
621 views

Can I (or should I) use a MacBook charger on my iPhone?

I recently got a MacBook with the USB-C charger. It comes with a 29-watt power brick, and I was wondering if I should use this to charge my iPhone. I've heard that the iPad power brick (I think 10 ...
0
votes
1answer
30 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
1answer
90 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
0answers
19 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
129 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
102 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 ...
0
votes
0answers
10 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
62 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 ...
1
vote
1answer
56 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 ...
1
vote
0answers
107 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 ...
0
votes
3answers
115 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 ...
0
votes
1answer
95 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 ...
1
vote
1answer
114 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 ...
0
votes
1answer
46 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, ...
2
votes
1answer
49 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
0answers
74 views

Apple cinema display magsafe doesn't charge my MacBookPro

After last Yosemite update (10.10.5) I've seen something strange. I usually connect my macPro to my Apple thunderbolt display and the battery is charging correctly. I noticed a couple of time this: ...
0
votes
1answer
350 views

iPad won't turn on after being drained [duplicate]

What if my iPad didn't turn on after battery drain? I did all the steps but it still didn't work. Is it already damaged or can I recover it on an Apple Store?
-1
votes
1answer
30 views

MacBook Pro 13' Power cord

I use a 6 outlet adapter on my wall outlet. Since it's on the wall, it gets loose sometimes. This morning I pushed it in, while my power cord was plugged into it and the the power cord was plugged ...
1
vote
0answers
68 views

MagSafe 2 frequently broken

I've got a MacBook Pro (Retina, Mid 2012), once in a longer period of time my MagSafe 2 adapter simply fries. Just a minute ago I fried the third MagSafe 2 adapter in three years time. It occurs with ...
0
votes
0answers
100 views

How to avoid external display going off after I unplug a MacBook from the AC Power?

When I have my MacBook Pro 10.10 connected to the AC Power my external display connected through HDMI works fine. As soon I disconnect the MacBook from the AC Power and start running on battery, my ...