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

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-1
votes
1answer
582 views

Using iPhone's GPS in remote areas

I plan to go hiking in an area where I do not anticipate there being much cell coverage at all. What there is will likely be very spotty. I would like to use the All Trails app to track my progress ...
3
votes
2answers
22k views

Is it possible to buy a genuine iPhone battery online? [closed]

I searched for an iPhone 3GS replacement battery on Amazon and while many items claim to be original/genuine, a lot of reviewers still complain that they are not/not as described/do not work well. Is ...
5
votes
3answers
10k views

Charge from USB on computer or wall socket?

Is it OK if I keep charging my iPad and iPhone using the Mac USB ports? Or is it better to charge them with the supplied chargers? I understand that charging slowly is better (though I'm not sure ...
4
votes
0answers
1k views

Macbook Pro Sleep Battery Drain

I have an Early 2011 Macbook Pro (13", basic spec) which since I got it (I only just stopped to think about it) has had a massive amount of sleep battery drain. When the laptop is on and in-use, its ...
3
votes
2answers
2k views

Battery cycles for rMBP and recharges?

So I got my first Apple laptop, a Retina MacBook Pro. I heard that its best to let the laptop discharge until 0% in order to restart the battery cycle or something like that. However I know that ...
3
votes
2answers
916 views

Disable Spotlight indexing, save battery life

I am using my laptop with very limited battery availability. I need to save as much battery as possible. I would like to disable Spotlight indexing, how do I do that? What else should I disable, ...
2
votes
0answers
233 views

Strange sleep mode of MacBook behaviour after water damage

Months ago I drowned my MacBooks keyboard in water and it died. I'm using an external keyboard now the Mac works as before. However, there is this interesting feature that if I just close the Mac ...
3
votes
1answer
6k views

MacBook Pro Battery Life Problems - only 2 hours with light usage

At some point in the past 2 weeks, my MacBook Pro (13", early 2011) began running hot and getting poor battery life. The battery life used to last 4-5 hours even when I was using it regularly. Now, ...
2
votes
3answers
2k views

MacBook Pro battery drains quickly, shows Service Battery when restarted

The new battery is an A1175 on a MacBook Pro (2008). The specs are that this battery should hold a capacity of 5600 mAh. OSX Lion System Information reports: Full Charge Capacity: 4936 mAh ...
5
votes
2answers
6k views

Which Personal Hotspot mode uses least battery?

Both iPad and iPhone's Personal Hotspot mode allows 3 ways to connect: WiFi USB cable Bluetooth I want to use Personal Hotspot on my MacBook Pro, this means that I can use either of the three. ...
2
votes
1answer
476 views

2007 battery replacement for 15" pro. 85w now 60w? Help!

I'm looking at a replacement battery A1175 for my 2007 15" pro (specs here: http://support.apple.com/kb/SP17), which is listed as 60w. My original battery charger was 85w. Is this going to work?
3
votes
1answer
28k views

Why is iPhone battery percentage fluctuating at lower levels?

My iPhone 4 (going on 19 months of love) has recently started having a bit of an issue knowing the percentage of its battery it has remaining. I will be using it and it will jump from 31% to 19% and ...
4
votes
1answer
1k views

Is there any study on how which services/sensors consume the battery?

I am looking for some study/comparison on how battery-consuming are specific services/sensors (3G, Wifi, GPS, Bluetooth, accelerometer) in the iOS devices. Has anyone stumbled across something like ...
2
votes
4answers
3k views

Can someone read messages on my locked iPhone?

I left my iPhone in a taxi cab. I locked the phone to make sure nobody finds it and makes expensive calls. But does locking the phone prevent someone from seeing the texts I am sending? What if the ...
3
votes
1answer
6k views

Does activating Find My Phone deplete the battery on an iOS device being tracked?

My phone is currently riding around New York City under the seat of a taxi cab. I'm watching its progress with the Find iPhone app. My concern is the phone may soon die and a rider or driver will ...
1
vote
1answer
1k views

4th gen shuffle battery, no lights or charge

My 4th gen ipod has not been used for some time, I have a new usb to jack cable for charging it. The shuffle shows no signs of life, no lights, when I plug it into the wall or computer(different ...
0
votes
4answers
784 views

My iPod Touch 2nd generation is dead

My iPod touch does not respond since yesterday. I cannot see anything on the screen and the buttons don't do anything, no backlighting either. The problem started when I wanted to plug my iPod into ...
3
votes
2answers
925 views

MacBook Pro: OS battery indicator doesn't match hardware battery indicator

I recently upgraded my MBP to Lion, and now the battery indicator in the menubar at the top of the screen constantly shows "(Charged)", even when the indicator on the side shows almost empty. Any ...
1
vote
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 ...
1
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
2k 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
2answers
16k 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
25k 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
692 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.
4
votes
2answers
65k 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
600 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
7answers
38k 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.
7
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
974 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
553 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
312 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
638 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 ...
1
vote
3answers
7k 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
353 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
542 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
464 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
389 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. ...
1
vote
2answers
2k 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
546 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
10k 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 ...