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

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2answers
383 views

Strange loading screen when MBP battery dies and reboots

I have a 2007 Macbook Pro and for nearly two years, the battery has been toast. In April, Apple replaced the logic board. Since the repair, whenever the power cable comes loose, the MBP shuts off as ...
4
votes
1answer
169 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, ...
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 ...
4
votes
4answers
23k views

Why does my MBP say “Not charging” when plugged in?

I have the latest 2011 Macbook Pro. Sometimes I notice that even when I'm plugged in, the battery status says "Not charging" even when I unplug it and the battery is at 35%. Why isn't my MBP charging? ...
4
votes
2answers
5k views

iPhone 6 charging best practices

Should I charge every night? (Assuming that I consume more than 50% during the day, but sometimes not much more.) Should I turn off the device during the charge? (Assuming that I don’t need the ...
4
votes
2answers
10k views

When should I plug in my MacBook Pro?

I have a MacBook Pro, and I want to keep its battery healthy for as long as possible. I've heard many "myths" about all these, one of them being that the battery will get "hurt" if I plug in the ...
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 ...
4
votes
4answers
9k views

Is there a shortcut for activating Low Power Mode in iOS 9?

I don't use my iPhone with a mobile data plan and I don't care if the polling frequency for background apps gets lowered a bit. Is there an easier/faster way to activate the Low Power Mode than using ...
4
votes
3answers
17k 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?
4
votes
2answers
26k views

Battery warning “Service Battery” goes away by itself

I got the "service battery" message when clicking on the power indicator of my MBP the other day, only my battery appears to be fine. Then today, it's gone away by itself, I haven't taken it in for a ...
4
votes
2answers
2k views

Does constant charging harm my Macbook Pro?

I usually connect my macbookpro with the charger 12-15hour/day and 7 days a week. I'm afraid the battery could lose capacity over time. However, I believe modern electronics should be able to handle ...
4
votes
1answer
2k views

Magic Mouse battery level broken in Lion?

After upgrading to Lion my Magic Mouse's level indicator seems to be broken. For the whole week it was reporting solid 100% on a pair of used batteries that were about 65% before upgrading. I swapped ...
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 ...
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 ...
4
votes
2answers
174 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.
4
votes
1answer
931 views

iPhone 3GS battery oddities

I bought a 3GS in August 2009. After about 9 months I started seeing occasional precipitous drops in battery level overnight (i.e. from 50% to "dead", as in all you see is the red "charge me" icon). ...
4
votes
5answers
10k views

No Batteries Available ?-How to Check battery health on MacBook Pro early 2011

A few days ago, I went on vacation and unplugged power cable from my MacBook Pro 13' early 2011 and then I got back home, the battery was not detected by OS and didn't charge. I then understood that I ...
4
votes
3answers
3k views

When plugged in, does the iPhone use the battery or the external source during heavy use?

I love to play games and do other tasks that quickly drain the iPhone's battery. Sometimes I'll use the phone while plugged into a power supply. Does the iPhone still use the battery when performing ...
4
votes
2answers
548 views

What is Best Practice when storing MacBooks for over a month?

We have a pod of 30 MacBooks and MacBook Pros that don't get used over the holidays. What's best practice to store the laptops for 6 weeks? I know that when you store laptops for long periods at ...
4
votes
1answer
3k views

Understand iOS Low Battery logs

Good morning everyone. I'm kinda new to this site but I see there are many expert opinions, so I would submit to you my question, hoping it will be helpful for someone else. Before proceeding, I beg ...
4
votes
3answers
201 views

Poor battery stats on rMBP late-2013

I unpacked my new MacBook only 2 days ago and it showed 9-10 hours of battery life (as advertised). I didn't calibrate it, since it is no longer necessary (I was told). Today I noticed that it ...
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 ...
4
votes
1answer
965 views

How can I maximise the life of my iPad battery? [duplicate]

Possible Duplicate: What is the best way to recharge an iPod Touch battery? Since the iPad battery cannot be replaced, how can I make sure that it lasts as long as possible, preferably ...
4
votes
1answer
113 views

What's the best way to prolong the lifespan of a Macbook Pro battery?

I have two Mac book Pros: A 2013 Unibody retina that I use every day An older 2006 model with removable battery that I use a couple of times a month (when not in use, it's not connected to the AC. ...
4
votes
4answers
51k views

Why is my iPhone 5S overheating so much?

Activities such as: Phone Calls that last around 10 minutes 3G Browsing for 5 - 7 minutes Watching videos for 5 minutes Using apps such as facebook / instagram etc for 5 - 7 minutes, lead to my ...
4
votes
2answers
6k views

How can I reset the service battery warning?

I learned from one of my other questions that the "Service Battery" warning will limit your CPU power and slow your computer down - this is a problem I've been having with my MacBook Pro. I have 906 ...
4
votes
1answer
159 views

Is battery life supposed to go not even a year?

I have a MacBook pro that I got about 10 months ago. It seems like I am already starting to experience battery life issues. I have a charge cycle history of less than once a day since I bought it. I ...
4
votes
3answers
9k 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, ...
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 ...
4
votes
3answers
4k 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 ...
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 ...
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 ...
4
votes
2answers
4k views

Macbook Battery Cycle Count (Unibody White 2010)

I have a macbook white unibody 2010 (A1342) that is now 17 months old. I'm wondering if my battery is still good? The battery's information is below. Design Capacity: 5200mAh Current Capacity: ...
4
votes
5answers
16k views

What's the best way to test the battery life on a MacBook Air?

I just recently got a MacBook Air and noticed that its battery life is much lower than Apple's estimate of 7 hours. Since it is not the same, I would like to benchmark my battery life right now ...
4
votes
1answer
565 views

High volume battery for MacBook Pro

Can you advise me of where or if it a high capacity battery exists to replace my pre unibody battery on a MacBook Pro?
4
votes
1answer
605 views

Alpine CDE-102 keeps iPod awake until battery drains

I have an Alpine CDE-102 w/iPod cable (professionally installed) with which I use with an old 5th gen iPod Video 30gb. My goal is to just leave the iPod in the glove compartment and only remove it ...
4
votes
1answer
648 views

MacBook discharging while plugged in under load

I have the latest Retina MacBook Pro MacBookPro11,2 I quite often have the CPU at about 400%-500% usage (e.g. 4-5 cores at 100%) and also do GPU intensive tasks. While this is happening, the battery ...
4
votes
1answer
310 views

Erratic battery percentage behavior

I purchased an iPod Touch in December 2011. It came with a Target 2 year warranty. From the time I started using it the battery never read correctly. I decided before the warranty was up in February ...
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

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 ...
3
votes
3answers
43k views

Why does my battery drop with 1% within a minute after removing the charger?

I just got a new iPhone 5S a week ago. Works perfectly aside from the fact that the battery tends to act weirdly. As mentioned in the title, when I remove the charger the battery percentage drop by a ...
3
votes
4answers
4k views

How to charge iPad (v1) on a Windows device

I have an iPad (first revision) and want to charge it using my Windows laptop. It doesn't want to charge and I've read quite a lot about it now (this one here amongst others via Google), but I haven't ...
3
votes
2answers
1k views

iPhone/iPad battery charging/discharging cycle

Apple recommends at least one charge cycle (charge to 100% and then running it down completely) per month. Then, is it OK to charge iPad/iPhone all the time as long as I have charge cycle per month? ...
3
votes
3answers
2k views

Why my MacBook Pro 15" (2011) power adapter turns orange?

I bought an early-2011 MacBook Pro 15" (highest-spec model) in June. It's running Lion. I have a problem which happens occasionally. My power adapter (while plugged in) from time to time ...
3
votes
3answers
324 views

MacBook Pro resale value — should I replace the battery?

Non-technical question here, sort of. I'm planning on selling my old MacBook Pro on Craigslist. It's in great physical condition, with the exception of the battery, which is nonfunctional. It's never ...
3
votes
4answers
49k views

Checking the health of my iPhone's battery [duplicate]

It seems that my iPhone's (4s - purchased Nov. 2011) battery loses its charge fast. I have read all the relevant OPs. Is there any app which provides information about the battery's health? Or ...
3
votes
1answer
10k views

Does the MacBook battery cycle count reset when replacing a battery

I've been reading up on battery cycle counts and checked out my current count on my MacBook (13-inch, Aluminum, Late 2008) - recommended maximum cycle count is 500. I've had this laptop now for over ...
3
votes
3answers
3k views

Does the 2011 13" MacBook Air have a longer battery life than the old one?

My understanding is that the new MacBook Air 2011 is using a new Intel CPU that uses less power. I expected that should mean either longer battery life or a lighter computer, but I can't remember how ...
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 ...
3
votes
2answers
16k views

How do i get the low battery warning back on my MacBook?

I have a MacBook and I did not take care of the battery properly. It started to shut down unexpectedly at around 20% and then even at 30%. I got a new battery and it seems to work fine; it lets me get ...