Concerning devices that store electrical power which can be used to run various devices in the absence of external power.

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0answers
84 views

iPhone 5 battery unused for 2 month

I would like to know if there is a risk for my iPhone 5 battery after remaining 2 months unused and uncharged. I'm going to re-use my iPhone, and I wonder if it stills usable for daily uses. Any ...
-1
votes
1answer
81 views

different MacBook battery models since 2008?

I am wondering if Apple changed the form factor of their MacBook (Pro) batteries since Early 2008? I was planning to replace my broken MacBook Mid 2010 Unibody with a used MacBook Pro from early 2008. ...
0
votes
1answer
204 views

Do apps placed in the background consume resources? [duplicate]

I've heard that leaving open apps on an iPhone, affects the duration of the battery's charge. Is this true and documented, or some of an urban legend? And does it affects other apps' performance?
3
votes
1answer
904 views

Dilemma about replacing the battery in my 17" MacBook Pro mid-2010

After 3 years my mid-2010 17" MBP model is telling me it's time to replace the battery. The current one (model A1309, FWIW) has had ~1000 cycles now and can't hold the charge reliably anymore. Being ...
0
votes
1answer
255 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?
8
votes
5answers
2k views

How to disable battery charging?

From the pmset man page: POWER SOURCE ARGUMENTS -g with a 'batt' or 'ps' argument will show the state of all attached power sources. […] Certain Apple battery calibration tools may ...
1
vote
1answer
145 views

iPad adjusts brightness when it reaches full charge

I recently put some iPads up around my office building as conferance room markers. They're plugged in to USB outlets, and seem to be charging fine. The screen stays on all the time, running ...
8
votes
2answers
20k views

Does the Apple Genius Bar replace Macbook Air battery on site?

I called Apple's toll free number but wasn't able to get a clear answer from them. My 2011 MacBook Air's battery is dying and I would like to have it replaced. The only problem is that I am ...
1
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1answer
83 views

Charge cycles increase?

This is a bit weird, I've been doing everything to keep the battery health great and that's what i achieved so far. it's going through 99-100%, but the thing is.. those charging cycles thing are ...
2
votes
1answer
4k views

How to check if MacBook battery is genuine?

My white MacBook's battery has completely died, so I'm looking for a replacement. It costs $150 from Apple, or about $70 for allegedly genuine Apple batteries on eBay: I'm leaning toward this ...
1
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1answer
12k views

iPhone 4S - sudden drop in battery percentage

I've bought a half-year-old iPhone 4S a couple of weeks ago and I just ran into a really weird issue the third time now: the battery percentage would suddenly drop 30-40-50%. One minute, it's, say, ...
1
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1answer
142 views

Utility to warn when process takes 100% CPU for x minutes?

I run on battery a lot and occasionally a process/app will crash in the background and start sucking up 100% of one or more cores. That in turn burns my battery down way faster than normal. I used ...
0
votes
1answer
74 views

MBP first generation Service Battery

My MacBook Pro is throwing me a message "Service Battery" and coconutBattery tells me I have 4007 mAh instead of 5450 mAh. Is there a way to pump it back up or is that impossible? I was looking ...
1
vote
1answer
713 views

An ipad app or setting that helps turn off wifi or turn on airplane mode on schedule?

i hope to conserve battery at night. is there an ipad app or setting that helps turn off wifi or turn on airplane mode at certain time? or would it even be better to have an app that turns off the ...
3
votes
2answers
1k views

Does iPad battery charging utility like Battery Boost Magic pro really make a difference in prolonging iPad's battery life?

Do battery charging utilities such as Battery Boost Magic pro or Kingsoft battery doctor really make a difference in prolonging the life of an iPad battery?
-1
votes
2answers
110 views

Can i remove MacBook battery when Mac is still running? [closed]

If my MacBook is running, can i remove battery and later put it back?
2
votes
3answers
10k views

iPhone 4S with latest update now charges very slowly

My iPhone 4S (iOS 6.1.x) dropped it's charge today. It now is charging very slowly. I deleted my iCloud account to see if that would improve battery life. It still is charging slowly, and has taken ...
2
votes
2answers
2k views

iPad boot loop only when powered - brief flash loop when connected to USB - jailbreak gone awry?

Received an iPad from a customer in an unknown state. Report was "does not power on". Device is out of warranty. It's the 1st generation iPad with a 3G chip. Symptoms: when connected to power only, ...
1
vote
1answer
330 views

My new MBP Retina needs to be recharged after 2 1/2 hours

I got my 13" retina MBP a few weeks ago, and used it quite a lot since then. However I noticed that battery drains incredibly quickly, I'm asked to recharge it after 2 1/2 hours of usage. I'm using ...
-1
votes
1answer
528 views

Disabling Hibernation AND DeepSleep mode on Retina Macbook Pro reduce battery life?

I am currently on 90%, HDMI connected to 2nd monitor, about 5-6 links open in Safari, terminal running (coding on python), Stickies, Messages, and Mail are running. My battery has 2h of remaining ...
2
votes
1answer
90 views

My Mac 'dies' if it has less the battery level is below 3%

My Mac 'dies' if it has less the battery level is below 3%. Is it possible to force it to hibernate when the charge is at 5%? I have a Mid-2009 MacBook Pro with 683 load cycles and the latest SMC ...
4
votes
3answers
11k views

Force integrated graphics card on OS X 10.8 Mountain Lion when working with VMware Fusion 5.x?

I want to force the GPU on my 2011 MacBook Pro 15 (A1286) to remain on the integrated GPU while I run VMWare Fusion 5.x. The gfxCardStatus software doesn't work on 10.8. Is there another solution?
7
votes
3answers
8k views

iPhone claiming low battery in cold weather

With the cold weather, a rather odd problem appeared on my iPhone 4S – whenever I use the phone in weather below ~12 °C, it turns itself off and claims to be out of battery. This most often occurs ...
3
votes
4answers
5k views

Retina Macbook Pro now has faster battery drain

I have disabled Hibernation mode and Deep Sleep mode, I also keep the charger plugged in about a week before removing it if I want to go somewhere with the laptop. I don't know if this is normal, but ...
1
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0answers
735 views

Fusion Drive Setup: Possible to force the HDD to spin down as long as your reading from/writing to the SSD?

I'm considering to replace my optical drive in my MacBook Pro with an SSD. When using it as separate Volume, the advantage is that you can spin down the HDD, thus reduce noise and first and foremost, ...
0
votes
2answers
2k views

Is it possible to improve the condition of MacBook battery showing “Condition: Replace Soon”?

I have a 2008 MacBook aluminium 13" (Model Identifier: MacBook5,1) which has started showing "Condition: Replace Soon" to describe the battery, so a couple of questions: what is used to determine ...
4
votes
1answer
1k views

Macbook Pro Battery / Discrete Graphics Card Issues in 10.8.2

I am posting because I currently have a 15'' Macbook Pro (Early 2011 edition) and have suffered from poor battery life since upgrading from Mac OS X 10.7 to 10.8. Before the upgrade, I could use my ...
1
vote
1answer
5k views

What prevents an iPad or iPod charger from overcharging?

my iPad mini came with this charger and cable. If i leave it charging overnight, what prevents it from overcharging my iPad(is it the charger or the iPad itself)? I ask because I also own a Dynex ...
0
votes
2answers
164 views

Are old unused macbook batteries ok?

I'm considering buying a Geniuine Apple Macbook Pro (2007) battery on ebay. This is NOT an OEM knockoff, and the battery is still sealed in original plastic, but I have no idea when the battery was ...
0
votes
1answer
187 views

Which Macbooks charge the fastest?

Is there any difference in the number of hours different generations and models of MacBooks take to "fast-charge" to 80%, or to fully charge?
0
votes
1answer
429 views

“Service Battery” warning briefly appeared on brand new rMBP. Should I take it back?

I bought a retina macbook pro yesterday and noticed a "Service battery" warning. It was there for a few hours and now has gone. Should I take it back to the store or do you think it's safe to ignore? ...
0
votes
1answer
108 views

iPod Model #1238 will not charge

I have an iPod Model #A1238 in which the battery is low. I tried to connect the power adapter cable which was provided to try to charge it but no luck. I thought it was the power cable so I bought a ...
1
vote
2answers
971 views

Do MacBooks slow down when not connected to power?

I recently read about a device that reported its "minimum CPU speed" (which was 50MHz; max was 1500MHz) and I wondered if my MacBook Air (and other devices like iPhone/iPad) slows down the CPU when ...
0
votes
3answers
4k 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
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1answer
2k views

Keeping MacBook Pro on Sleep Mode for days

I usually use my MacBook Pro for programming purposes and is mostly open about 14 hours a day, with 2-3 hours being plugged in until the charging is complete and then I disconnect from power ...
1
vote
2answers
3k views

Swollen/pregnant battery on a MacBook (13" aluminium late-2008)

The battery in my late-2008 model aluminium 13" MacBook became extremely swollen in early to mid-2012 after only 283 cycles (as per Cycle count under Hardware → Power), and the button on the ...
1
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1answer
212 views

Does anybody use an external battery for iPhone?

Do external batteries for iPhones work well? I have an iPhone 4S For example, is it true that I can charge up to 6 times my iphone with this product?
4
votes
1answer
154 views

Is it good to keep apps closed on iOS devices?

Is it better to keep apps closed (double tap home button, hold the icon, and exit the app), as much as possible on iOS devices? I know the more apps one has open, the more RAM, for example is used, ...
2
votes
4answers
4k views

If I replace an iPod Classic battery myself, will the music be preserved?

I have an iPod Classic that needs a new battery; the old battery will no longer hold a charge. I've been told that if I send it to Apple to be fixed they will restore the device and the music will be ...
3
votes
2answers
3k views

Old iPad not charging after no use for a year

I have an old iPad and want to give it to a friend. I plugged it in with a new lead that charges another 1st gen iPad I have, but it's not coming on. It's not been used for about a year. It's been ...
10
votes
1answer
210 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), ...
3
votes
2answers
8k views

Using memory with a higher MHz rating? [duplicate]

Can MacBook Pro's successfully support and fully exploit RAM of a higher MHz rating than that which they ship with? For example, take my 15" MacBook Pro (Late 2011) that ships with 4GB of 1333MHz ...
1
vote
0answers
237 views

What's the easiest/cheapest way to replace my battery? 2009 MBP

I have a 2009 MacBook Pro (5,5). I can spend about $150 either taking it to the apple store and having them replace it or buying all the stuff from iFixit and doing it myself. Is there any ...
5
votes
2answers
309 views

What charging mechanism to be used to maximise the battery life?

So I got my first Apple laptop, a Retina MacBook Pro. Since macbook pro retina's battery are no longer easily switchable I'm concerned about it's life and would like to maximize it. I have few ...
0
votes
1answer
768 views

Dysfunctional trackpad on 2007 Macbook

I have a 2007 white Macbook here, of which the trackpad gradually became less responsive to the point where you can't press it down anymore at all. Neither the left nor the right button will ...
4
votes
1answer
3k views

Is it advisable to calibrate the battery on a MacBook?

How useful or necessary is it to calibrate the battery on a MacBook? If it is, should it be carried out when first purchased and does calibration of the battery mean it will also last longer?
3
votes
1answer
493 views

Get notified when battery is charged

Is there a way to write a custom apple script or any other way to get a Alert or Desktop notification when the battery on my Macbook Pro reaches a certain percentage of charge?
1
vote
1answer
3k views

Can I charge my iPod Nano 2012 with the iPad USB plug?

I have a brand new Nano, and was wondering if I can use the same electrical connector that I've received with my iPad2 to charge the Nano? Will it be armfull for the Nano?
0
votes
1answer
608 views

How does iPhone5 battery fare with always ON 3G, not heavy music listening (+ 1-2 hours of Bluetoth), ocassional GPS and Camera use? [closed]

I WILL keep the 3G always switched ON. Also continuous syncing of some services like Gmail, Twitter, Contacts/Calendar/Task apps, WhatsApp, FlipBoard/GoogleCurrents, SimpleNote, Instagram, IM, ...
3
votes
3answers
1k views

Unable to Turn off Battery Percentage Indicator

A few years ago when I had my iPhone 3GS, and wanted to see the battery displayed as a percentage (before this was implemented as a feature of iOS). I achieved this via jailbreak. Now my issue is ...