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

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1answer
145 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
2k 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
6k 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
1answer
3k 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
6answers
6k 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
vote
1answer
260 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
167 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
9k 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 ...
5
votes
2answers
16k 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 ...
11
votes
1answer
248 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), ...
5
votes
2answers
26k 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 ...
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0answers
311 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 ...
7
votes
2answers
409 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
1k 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 ...
6
votes
1answer
4k 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
1k 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
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1answer
6k 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
764 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, ...
4
votes
3answers
2k 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 ...
3
votes
1answer
1k views

Seems like my trackpad is never sleeping/shutting off

I'm experiencing some funny behavior with my Retina MacBook Pro and my Magic Trackpad. There are two symptoms that I believe could be related: The batteries on my trackpad drain far more quickly ...
3
votes
2answers
16k views

Can I keep the MacBook Pro Retina's power-cord plugged in at all time? [duplicate]

Possible Duplicate: Should I disconnect my MacBook Pro’s power cord when the battery is fully charged? I'm wondering if it's reasonable to use a MacBook Pro Retina as a desktop replacement ...
4
votes
4answers
18k views

Is it wise to turn off the iPad completely if I don't use it during the day?

A friend of mine has an iPad that she uses only once a day for about a half hour. I told her to turn it off completely in between uses to conserve energy - no point having the device run in standby ...
-1
votes
3answers
532 views

iOS 6 kills battery life

I live in the Boston area (zip code 02421). Since upgrading to iOS 6, both my iPhone 5 and iPhone 4S are getting really hot and last only 4 hours maximum, even in standby. Also, AT&T notified me ...
0
votes
1answer
36 views

More Email Account cost more battery?

I have around 15 email accounts, if i setup all that's 15 emails in iPhone with IMAP method. Will it cost more battery than i just only setup 1 email account?
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2answers
4k views

Why would an iPhone 4S drops from 100% charge upon unplugging it?

I have notice lately (in last two months or so) after disconnecting my iPhone 4s (with iOS 6) from the charger in the morning after an entire night of charger it immediately drops from 100% to 98%. ...
4
votes
3answers
3k views

iPhone 4S/IOS6 - battery drain after the camera usage

Just discovered than my iPhone4S/IOS6 draining battery too fast after I using the camera. So: after the fresh restart the phone lasts 3 days - when not taking photos or videos, but enough take one ...
1
vote
2answers
5k views

How does using GMail via IMAP or Exchange affect battery life?

What are the differences with respect to battery life between using the regular Gmail setup as opposed to the Exchange setup? I know that the Exchange allows for push, but is battery life affected ...
2
votes
2answers
337 views

First cycle of MacBook battery: runs at 97% capacity, is this normal?

I ordered my brand new Macbook Air with 8 GB RAM and picked up from Apple Store two days ago. However after fully running out of battery for first time, I recharged it to 100% and coconutBattery says ...
0
votes
0answers
340 views

Battery health inconsistent

With the iStat Nano dashboard widget I can see the health of the battery on my 10.6.8 Macbook Pro. This health value jumps from 76%, to 84%, to 80%, etc. just in a few hours. I've reset the SMC ...
0
votes
1answer
475 views

System clock reset to Jan 2001?

I got an error message saying something like "System clock reset to Jan 2001" and then many things stopped working. I has my laptop in standby mode and the battery must have gone completely flat ...
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2answers
1k views

Brand New Macbook Pro (Mid 2012) already with 2 cycle counts

Yesterday I unboxed a MacBook Pro (Mid 2012) and I am disappointed that the battery has less than its "manufacturer capacity" and has 2 cycles already. Is that normal?
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votes
2answers
1k views

What's broken in my iPhone

I just got my friends' iPhone and he claims he's broken. So I sent it to a repair centre and they told me the logic board was broken. However, when I try to recharge the iPhone by plugging it in the ...
1
vote
1answer
869 views

Can CPU Speed Stepping be prevented?

A while ago, I asked a question regarding the reason behind my computer slowing when it had ~5% battery or less. I was told that it was either CPU speed stepping or the Macbook Pro automatically ...
2
votes
2answers
3k views

How often should I remove the charger from my rMBP?

I want my battery to remain healthy. I used to charge it full then remove the charger after it's done, then put it back on when it goes down to 10% .. However this is becoming hectic and I was ...
0
votes
0answers
123 views

iBook battery repack

I have several ibook batteries that have gone bad and I was wanting to open them up and make some good batteries out of all of them by taking out the bad cells and putting other ones in there place, ...
8
votes
3answers
15k views

What are real life iPhone 5 battery run-time expectancies?

I got my iPhone 5 this week. While browsing with Safari, on WiFi (which I am using to post this question), my battery life drops at a steady rate of 1% per 5 minutes. I have been timing it from 64% ...
0
votes
1answer
647 views

iPhone battery life: Siri or iOS 6?

I updated my iPhone 4S to iOS 6. I suddenly activated Siri (because finally it comes in my language) and in this days I noticed that my iPhone battery life is less than previously. This problem is ...
2
votes
1answer
8k views

How much does it cost to service a MacBook Pro battery?

I have a mid 2009 MacBook Pro and I just got a message saying that I should service my battery. I tried to reset SMC and NVRAM but the problem persists and I fear I'll have my battery replaced. How ...
3
votes
1answer
268 views

Why hasn't my battery life improved even though I changed the battery?

I have a mid-2009 white MacBook. About a week ago, I switched the aging and failing battery for an identical new battery I got off eBay (supposedly original part and new - looked legit both in ...
0
votes
1answer
474 views

Fixing MBP battery which has been sitting

I have a new battery that has only 3 or 4 cycles on it, that I got as a replacement a year ago. The battery and the machine it's in, a late 2008 MBP, has been sitting for the last year unused. I tried ...
2
votes
1answer
588 views

How can I disable CPU throttling on Late 2006 MacBook with no battery?

The problem I am experiencing is that if the battery is not present, the CPU is automatically throttled. I have done some searching and have found that this is apparently by design, "in case the ...
2
votes
1answer
605 views

Should the MacBook Air have the same amount of charge as its stated capacity when 'Full Charged'?

The following is an extract from System Information (under power): Charge Information: Charge Remaining (mAh): 6517 Fully Charged: Yes Charging: No Full Charge Capacity (mAh): 6690 ...
1
vote
1answer
305 views

Would a 2.6 Ghz CPU drain a laptop's battery faster than a 2.3 Ghz CPU?

Apple offers the MacBook Pro with two processor options -- 2.3 Ghz and 2.6 Ghz. I'm wondering if the more powerful CPU drain the battery more quickly by any significant degree. (And incidentally, ...
1
vote
2answers
5k views

When streaming movies online, should I keep the computer on the charger?

I watch a lot of movies streaming online. Should I keep my computer on the power cord, or should I charge the unit completely, remove the power cord, then wait till it gets to a low battery and plug ...
1
vote
2answers
4k views

How can I triage a MacBook Pro that won't charge with the LED dimly lit green?

I have an early-2011 MacBook Pro that will not charge. The green light on the MagSafe connector is barely green. Besides the fact that the system info tells me the battery is not charging, the ...
0
votes
1answer
84 views

Charging behavior of iOS devices

Does the speed at which the battery of an iOS device charges vary depending upon whether it is being used or not? For example, when I am charging an iPhone in my car, will it charge faster when not in ...
2
votes
1answer
4k views

Can a MacBook Air battery be replaced?

I have a MacBook Air which is an awesome computer, however I am curious what my options will be when the battery finally kicks the bucket. Can it be replaced?
12
votes
5answers
58k views

How to maximize Macbook pro retina's battery life when working with AC power?

I'm working 95% of my time with AC power and Thunderbolt Display. Since macbook pro retina's battery are no longer easily switchable I'm concerned about it's life and would like to maximize it. Before ...
4
votes
1answer
518 views

MacBook Retina strange system/battery behaviour

I am quite used to the fact, that MacOS X does a lot abracadabra internally to provide the best user experience ever, but I also used to understand all that happens. With my pristine MBPr (3 battery ...
2
votes
3answers
355 views

Will using my iPad as an external monitor negatively affect it's lifespan?

I'm using AirDisplay to allow me to use my iPad as an external monitor for about 10 hours a day. I have it plugged into my Mac the entire time (so the battery doesn't completely die). Will this ...