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
1k views

How to get the iPod Nano 5th gen battery health

Is there any way I can get the battery health of an iPod, specifically a 5th gen Nano? I've done a little bit of googling and I don't think there is a way, but I though I could give it a try here. I ...
3
votes
3answers
7k views

Does plugging in an iPhone/iPad make a difference to its battery lifespan?

I've been led to believe there's a difference between how a MacBook and an iPhone/iPad consume power: when a MacBook with a fully charged battery is plugged in, its components draw power directly from ...
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vote
1answer
2k views

MacBook Pro battery not fully charged sometimes. Need tips

I'm using MacBook Pro and it will be in charge nearly 12 hours in a day. I set the battery indicator to Percentage, so it is displaying the battery charge in percentage. The problem I faced is, most ...
3
votes
1answer
1k views

Problem with applications not resuming where left off after low-battery sleep/hibernate on Lion

I am having problems with applications re-launching from scratch, rather than continuing where they left off, when resuming my Mac (alumimum MacBook, fall 2008) after its battery runs low. This ...
2
votes
3answers
3k views

Is putting the computer to sleep while it's in a hot car a bad idea?

I know that keeping the battery of a MacBook Air in a hot environment is a bad idea. But sometimes I have to leave it in a hot car. Are there any recommendations as to what to do in this kind of ...
7
votes
3answers
17k views

How can I preserve the battery cycles on my MacBook Air?

I recently got my MacBook Air, and the battery cycles is already at 12. Is this good/average? I don't know if I am not charging it properly or something, because I don't want to ruin my battery in the ...
8
votes
5answers
26k views

Does overcharging a MacBook degrade its life?

I have an early 2011 13" MacBook Pro and I use it almost like a desktop. I leave the power cord connected all the time. Is this OK? Am I ruining the computer or diminishing its lifespan?
2
votes
1answer
708 views

MacBook Pro battery and speed issues

My sister's MacBook Pro often shuts down at ~20% battery. It won't turn on again until it has been plugged in for about 10 minutes.
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2answers
66k views

iPhone turning off with plenty of battery remaining

Lately my iPhone 4 has been getting to 19% battery and then dropping straight to 1% and shutting off. Once I plug it back in and start it up it immediately shows up at 19%. Is this a battery or ...
2
votes
4answers
607 views

Is it true that iPhone 4S has battery issues?

I'm considering getting a new iPod and a new mobile phone. iPhone 4S sounds like a really attractive option, but it looks that iPhone 4S has serious battery issues. Some people are charging their ...
12
votes
8answers
41k views

How to figure out iOS device battery health?

I'm looking for ways, similar to coconutBattery for OS X to figure out current health of battery for iOS devices.
8
votes
1answer
1k views

How is the battery level calculated in the magic mouse?

I wonder how the battery level in the magic mouse is calculated. This question about battery problems raised another one, I would like to know how the electronics in the magic mouse work and evaluate ...
3
votes
3answers
982 views

How can I keep my MacBook Air's battery cool?

It seems that the best advice for battery longevity on my MacBook Air is to keep the battery cool. It doesn't have powerful fans like the MacBook Pro, so I would think that overheating is even more of ...
6
votes
3answers
571 views

Does the real-world MacBook Pro battery life scale linearly with it's capacity?

I have a well-worn battery on my 2010 MacBook Pro. After 467 charge cycles, I get about 3 hours of the normal 6-7 hour range. Using coconutBattery shows me that the charge capacity is 5783 mAh, ...
5
votes
1answer
314 views

Have battery status only show in menu bar when running on battery power

I use my MacBook Pro plugged in to power and an external monitor 90% of the time, and thus the little charged battery indicator in the menubar is useless. However when I'm not on wall power, is there ...
6
votes
3answers
1k views

Which model of Macintosh has the longest battery life?

I was exclusively a PC man (specifically Dell, Gateway, and HP), but I am now planning to buy a Mac, because my sister has a Mac, with a battery life (much) longer than mine, and I would like to ...
7
votes
1answer
1k views

Does using a brightness reducing app save battery?

I installed the app Brightness Slider on my MacBook because the lowest brightness setting in the System Prefs isn't low enough at times. When I choose a brightness setting below what the System Prefs ...
4
votes
1answer
639 views

MacBook's battery “Not Charging”?

My original battery died. I purchased a replacement battery. While this battery DOES hold charge, when it is on the charger, MacBook still states "Not Charging." I've tried the SMC Reset, taking out ...
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vote
3answers
8k views

What should I do if my iPod keeps saying “Connect to power”?

I have an iPod Nano (6th generation). I bought it 10 months ago. I fully charged it and it started to work. Since then, I left it 10 months without using nor charging. Now, when I connect it to PC, it ...
9
votes
4answers
7k views

Does an iPad consume more battery power when there are multiple applications open?

Does an iPad consume more battery power when there are multiple applications open compared to let's say, having only one application resident in memory? If there are differences between the ...
6
votes
1answer
355 views

Can anything cause the battery “cycles count” to appear higher than it really is?

Is there anything that could cause the battery's "cycles count" in the Power section of System Information app to report number of charge cycles greater than the actual number? I ask because the ...
3
votes
2answers
2k views

How does the new iPad's Retina Display affect its battery life?

As we all know, the new iPad has a gorgeous new Retina Display. And yet, it's advertised to have battery life just as good as the iPad 2's. How is this possible? Doesn't the new display require a lot ...
5
votes
4answers
19k views

How long does the battery last on mid-2011 MacBook Airs?

I know that one of the big innovations in the MacBook Air was in the battery (which gets most of the internal volume of the computer!) What is a normal loss of battery life (change in usable time on ...
2
votes
4answers
547 views

What's the battery life of the new iPad 4G with LTE disabled/enabled?

I saw a video about the new iPad and it showed that you could disable LTE. Apple had to increase the battery capacity in the new iPac because upgrades like LTE and the new display draw ...
3
votes
2answers
473 views

Is there a way to only enable automatic graphics switching when on battery power?

It is rare when I use my MBP on battery power. But is there a way to only enable automatic graphics switching when on battery power?
2
votes
5answers
8k views

How much time do I have left on my iPhone 4s

I just checked and it says the battery on my iPhone 4s is 30% charged. If I leave my phone off, how much time will it have left? What if I turn it off? I need to know if I'll be able to use this ...
0
votes
1answer
394 views

Why do no external iPad/iPhone batteries charge via a dock connector?

There are many external battery packs which have a USB port for charging your iPad or iPhone on the go. But they all seem to be charged via a Micro USB port themselves, rather than a dock connector. ...
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2answers
3k views

My battery is not charged. The only way to operate is to plug the computer in

My battery says 0% charge, there is no x over my battery icon. The MacBook runs fine on corded power but dies as soon as I unplug. What could be the problem?
2
votes
1answer
3k views

MacBook Pro appears to be completely dead and the charger is showing only a very dimmed green light

After doing a suspend I wasn't able to "revive" my early 2011 MacBook Pro. MBP does not respond to: power, long-power, SMC reset or even battery test button. the charger is showing a dimmed green ...
0
votes
1answer
554 views

What is the best way to charge

I'm currently using Late 2008 MacBook (Aluminum). My battery cycle is currently 111 and has went for replacement of battery 6 months ago + warrenty is ending soon. Hence I want to let the battery last ...
5
votes
1answer
8k views

What could cause MacBook battery cells to swell up?

I have a problem with my 3 year old MacBook. The battery has "swollen up" (I could post a picture if that is of help). One side of the battery is much bigger than the other. Since it no longer works, ...
0
votes
3answers
11k views

Poor battery performance after SSD install

I recently installed a Crucial SSD into my Macbook Pro (2.66 GHz Intel Core i7), and now the performance of my battery is probably about 50% of what it used to be. I've tried to reset the PRAM, but ...
2
votes
3answers
12k views

Does a black screen save battery on an iPhone 4?

Where can I found information about the power consumption of an iPhone 4 display? Which technology is used? Does it save battery lifetime when the screen displays black or dark pixels? Additionally, ...
3
votes
3answers
4k views

Faulty iPhone 4S battery - how can I test a battery to measure its integrity?

I bought an iPhone 4S two months ago. In the last couple of days I've perceived an average battery life of 12 to 18 hours with a light usage of the phone throughout the day. I've followed every tip ...
0
votes
1answer
2k views

iPhone 3GS Keeps Rebooting

My 3GS keeps having a strange issue, but I think I've found a pattern. First let its battery get low enough to where it turns off on its own Recharge it enough to come back on After coming back on, ...
4
votes
2answers
2k views

Battery issue with MacBook Pro 13 inch (Early 2011)

So, around June 2011 I finally had the chance to buy my first Macbook Pro (13 inches, i5) But recently, I've noticed something wrong with my battery! Actually with only 2 months of use, I was under ...
2
votes
2answers
20k views

Anyone knows how many mAh in iPod Touch 4th generation battery?

Does anyone know how many mAh does the iPod Touch 4th generation battery have? Seems like Apple doesn't provide this particular info.
8
votes
5answers
107k views

Why do iOS devices take such a long time to turn back on?

Often I will realise my iPhone or iPad is about to run out of battery, run around the house looking for a charging cable and plug, and get back just in time to see the screen go black and the little ...
3
votes
3answers
13k 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 ...
4
votes
2answers
176 views

Unexplainable large number of cycles of MacBook Battery

My battery is a year old, but it has 189 cycles. Why is this? I always use my MacBook with the charger plugged in and very rarely without the charger.
3
votes
1answer
296 views

Is switching 3G/4G off to save power a cheap trick?

Since UMTS is a lot fast than EDGE, data transfers via UMTS take less time. When downloading the same file, it would take longer to be downloaded via EDGE. Doesn't the difference in transfer time (...
1
vote
2answers
896 views

Is it normal for a 2011 MBP to display “Not Charging” while using Skype?

Whenever I use Skype, my MBP displays "Not Charging" about 95% of the time. When it is charging, it is extremely slow, gaining 1% over maybe an hour or so. Additionally, if I start using Skype on ...
3
votes
1answer
384 views

Apple Battery Charger Not Charging Sanyo Batteries

I've had the Apple Battery Charger for a good long while now. After I bought it, I also bought a couple 8-packs of Sanyo Eneloop HR-3UTGA batteries, known to be the same model of battery included with ...
3
votes
3answers
281 views

Can the clock speed of my 2011 MBAir i7 be slowed to conserve power?

Most of what I do with my 2011 i7 MBAir could be done with 10% of the available processor power. Is there a hack to slow the processor to conserve battery for the 95% of the time I don't need it?
2
votes
1answer
895 views

Does using a macbook with an external monitor damage the health of the battery?

I have an (oldish) MacBook Pro that I use with an external monitor, which requires that the MBP power adapter be plugged in all the time. Does that damage the health of the battery? I ask because my ...
4
votes
6answers
10k views

Is it safe to buy MacBook Pro batteries on eBay?

My 15" MacBook Pro 5.1 (late 2008) battery is inflating to the point of nearly breaking the unibody battery cover, so I'm really into replacing it as soon as possible. There are loads of these ...
2
votes
1answer
791 views

Is using my iPod touch always plugged in an OK thing to do?

I recently added an iPod interface to my Accord: http://www.amazon.com/gp/product/B001JT5G4G/ref=oh_o02_s00_i00_details It has two connections: the regular Apple 30-pin iPod dock cable which plays ...
0
votes
1answer
778 views

MacBook not charging

I have a 2008 Black MacBook. The battery indicator says 'Not Charging' and if I remove the power adapter it powers off instantly. I had OS X installed, installed Windows (Not bootcamp, Windows only) ...
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vote
2answers
469 views

iPhone 4 battery questions

I have had an iPhone 4 with iOS5 for about 6 months. Is it good to wait for the battery to be almost 0% to recharge it? Is it good to recharge it to the fullest? Is it bad to leave the phone ...
7
votes
3answers
3k views

Is there an app that will track “Time since last full charge” on OS X?

I am trying to troubleshoot battery life issues in OS X Lion on my MBA13. Is there an app (or hidden system information) that can tell me how long my computer has been on since last full charge. I am ...