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

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81 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 ...
3
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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 ...
2
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316 views

How much will upgraded processor and RAM affect battery life?

I'm considering purchasing a new Macbook Air, and one of my main goals would be to maximize battery life. If I upgrade the standard processor (from 1.3GHz Dual-Core Intel Core i5 to 1.7GHz Dual-Core ...
2
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0answers
172 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 ...
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98 views

Disparity between “Charge remaining” and “Full Charge Capacity” on relatively new MacBook Pro?

I have the latest retina MacBook Pro. While looking at some statistics, I saw the following: My computer is currently on 100% charge (charger is plugged in), and it seems odd that the difference is ...
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66 views

Battery Life on MBPr (2014 model) with*out* dedicated GPU

I am considering to try MBPr (late 2014 models) coming from Windows environment, which means that I would still need to use Windows about 50% of the time. One of the strong points in favour of MBPr is ...
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30 views

iOS: Default Battery Percentage Level for individual services to switch off

We all know iOS switches off services one by one when the battery reaches critical level. But is there any fixed battery level to cut down individual services. For example, Bluetooth will be switched ...
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342 views

iPhone heat and battery drain

In december 2013 I bought an iPhone 5s. A couple of weeks ago I restored my iPhone to 7.1.1 using a back-up on my Mac. Since then, the battery drains very quickly and the devices heats up most of the ...
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47 views

How performance of Macbook Air 13" mid-2011 battery from iFixit compares to the original one?

Please share your performance of the replacement battery as sold by iFixit (I'm interested in the New one, not B-Stock) as compared to the original battery from Apple for Macbook Air 13" mid-2011 ...
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32 views

iOS - Howto get notification email when battery is less than 20%

I wish to receive an alert/notification with email when iPad Mini battery is less are equal than 20% I use iPad mini only in public transport, not regularly. So no manual solution.
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28 views

Using old MacBook battery as an USB charger. Known adapters/cases?

I have an old MacBook with an OK battery. When I go out sailing or traveling I have a lead battery with me to be able to charge USB-things. iPhone, portable speakers, etc. The old MacBooks battery ...
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70 views

Does APNS work over LTE, or only UMTS/GSM and WiFi?

Over at Android Enthusiasts, we are having a discussion of what's more battery-life efficient — having APNS over GSM or UMTS networks during sleep, as TS4264 appears to indicate (thus ...
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81 views

Battery value in terminal different to battery value in menu bar

My MacBook Pro Retina is currently reporting 100% battery in the menu bar, however if I run the following command in terminal; ioreg -l -w0 |grep Capacity The following is returned; | | ...
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273 views

MBP restarting twice after going into deep sleep from a fully drained battery

Ever since I installed Mavericks on my 15" Mid-2012 MBP (4GB), I've noticed that if I let my machine completely drain to 0% and it (supposedly) goes into Deep Sleep, when I plug it back in and ...
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39 views

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

My Macbook battery is essentially dead. It has behaved erratically for the past 1.5 year. In any case I checked the cycle count today and found only 270 something. If I recall correctly, I had much ...
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368 views

Dim LED on Magsafe, Macbook Pro won't boot

I have a Macbook Pro late 2008, and today, it suddenly decided to stop booting. The battery level is very low, and connecting the adapter to it shows a very dim green light on the Magsafe connector. ...
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63 views

i have changed my Iphone 3g battery but it stucks on 61%

Hey guys did a search and couldnt find anything that really suited my situation. I recently changed my iphone battery, The Phone turns on and the battery decrease imediately its decrease 1% with in 10 ...
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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 ...
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745 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, ...
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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 ...
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553 views

“2008 Mac Book Pro 15” Fan max speed, Battery not recognized , SMC reset makes it worse

I have a "15" Mac Book Pro 5,1 and after running it stone dead on battery once it wouldn't power on without holding down the power button, with battery and AC removed and then plug AC back in while ...
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8 views

Macbook Battery calibration craziness

As explained at this Superuser question, I've bought a generic battery for my 2008 Macbook but didn't need it. Based on the answers, I've decided to use my new battery and proceeded to try to ...
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23 views

Does the “Battery Doctor” technique make sense?

On my iPhone I've downloaded the application "Battery Doctor" (https://itunes.apple.com/gb/app/battery-doctor-master-battery/id446751279?mt=8) which makes you charge your phone while their application ...
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220 views

Iphone 5 Panic IPS After Changing battery

First I will like to say sorry for my English that it’s not the best In the world. I have a problem with my Iphone 5, its all begin in the moment that I put my phone to charge after that I realize ...
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56 views

MacBook Air randomly “dies” on a full/near full battery

Since the beginning of the month, I've had a strange issue with my 2010 MacBook Air (2.13 Ghz, 4GB Ram, 128 GB SSD). It will run fine when plugged into the MagSafe, but running on battery it'll ...
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28 views

Battery Dead or Normal

I have an unusual problem. I have an 11" MacBook Air (Mid 2011). I am only able to use it via the power adapter although no light on it of any colour at all. When I check the battery in System ...
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21 views

do i have a bad battery or macbook?

I have a 2007 17" MacBook pro and the battery stopped holding a charge. I did not have enough money to buy a apple one so I bought third party battery. The battery will charge to full capacity and the ...
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0answers
21 views

Why does my iPhone 5 refuse to turn on at a different level to my iPhone 4?

When iPhone 5 (A1529) shuts down when it's low on power and refuses to start which is expected, however when i plug it into power it starts up right away have 11% battery so i'm assuming it shut down ...
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63 views

My charger for my white macbook isn't charging

I was actually on my macbook like a few days ago and the charger was working GREAT. However a few days later like 3 more days later it stopped working. It was a LIGHT green and then it would get ...
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20 views

Macbook Air battery power = 0, odd sleep / shutdown hybrid

Does the macbook air go to sleep or shutdown when battery power is used up? Mine does something in-between... screen goes black on battery = 0%, and when plugged back in, it doesn't go through a boot ...
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32 views

Second battery failure

I replaced my battery on my mid-2010 13" MacBook Pro less than a year ago, while it was still under AppleCare. My new battery is now telling my computer to give me the "service battery" indicator. Is ...
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54 views

What are the ways to solve my iPhone power drainage problem?

I am using iPhone 5s with iOS 7.1.1 I have a problem from 3 days ago. The battery keeps draining and the phone keeps warm in the whole day. I found that mstreamd keeps starting every minute. From ...
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225 views

How many times can a iPhone 5/iPad 2 be charged with Rechargeable Tyre Inflator

I am thinking about buying a Rechargeable Tyre Inflator with built in USB. Many of the devices available state the USB is compatible for Smart phone charging. But none specify what mAH total you can ...
0
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0answers
26 views

Can iPhone work with any rechargeable li-ion battery 3.7 V 1220 mAh in the market?

Just wondering: Does Apple make their own rechargeable li-ion battery (ie Apple proprietary battery)? or Apple used some certain rechargeable li-ion battery brand that already existed in the current ...
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51 views

Iphone 5 low battery settings with wifi

Are there any special Iphone 5 low battery settings with wifi? Today I was using my iphone and the wifi magically turned off by itself. I figured it was just having trouble finding the wifi so I went ...
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0answers
46 views

Iphone 4 will not turn on, apple comes for 10 seconds then goes back off

I have no idea whats wrong with it. just started recently happening the other day I reached for it and it was off. Battery was on 49% when I left it, plugged it back in then it showed it was flat? ...
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48 views

Need to drain (powered down) iPhone4s' battery.

in summary, i think my 4s is having some battery calibration problem. started with batt % dropping rapidly to 1%, but managed to on itself after i charged it for abit. stayed at 1% for the entire ...
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0answers
81 views

External Firewire Audio Interface Overheating Macbook Pro 6,1

When I connect an external firewire audio interface to 17" Macbook pro 6,1 2.53ghz i5 the computer heats up at an alarming rate. I've heard all sorts of things on the internet, but still no reasonable ...
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206 views

iPod Nano doesn't get fully charged when connected to MBA

I've a 7th generation iPod Nano. And it's working fine. I usually used to charge it either by connecting it to a wall charger or through my iMac. And every time it got charged just fine. The battery ...
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0answers
90 views

Charging issue MacBook Pro (late 2009)

I came home one day and the battery on my MacBook was dead. I plugged it in and the light stayed green. After doing some research I reset the SMC and that didn't work. It caused the light to blink ...
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0answers
483 views

Macbook Pro Early 2011 with Mavericks suddenly got battery died

I've got a MacBook Pro 15" (Early 2011, i7 2.2/750GB/HD6750M) and I did some upgrades later on including 2x4GB RAM, a 256GB SSD and a 750GB HDD to replace the optical drive. This machine was smoothly ...
0
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0answers
75 views

Macbook charger/MagSafe DC-in drive issues?

Hello everyone—I'm having really bizarre issues with my macbook charging. Prepare for a lot of information. The facts are these: I have an A1286 15" unibody macbook pro My genuine apple 85w ...
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0answers
39 views

iPhone 4 doesn't power on, but is recognised by PC

My fiancée's iPhone 4 doesn't seem to want to boot. I originally thought it was just not charging, but my PC recognises it when I plug it in via USB. Might just be that the USB logic (e.g. FTDI) ...
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0answers
20 views

Should I change battery charger if I get the long-lasting battery of mid-2010 white unibody Macbook?

I saw that it's possible to use the mid-2010 White Unibody Macbook's battery on late 2009 White Unibody Macbook. If I upgrade my late 2009 Macbook's battery, should I also change my battery charger? ...
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61 views

Are the new MacBook Unibody Aluminum Batteries better than the old ones?

Of course a new battery is almost certainly better than an old one. That's not what I'm asking about. I used the same battery in my Mac for five years but it sucked from day one really, only lasted ...
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0answers
40 views

W and Q keys don't respond after batteries died?

So I didn't pay attenion to the batter and didn't plugin in my macbook pro and it died. Once I turned it back on I found out the w and Q keys no longer respond. I've had this computer since early ...
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0answers
160 views

Good Quality Replacement iPhone 4S Batteries

I have a two year old iPhone 4S that's just no longer holding a charge like it used to. I purchased a "genuine replacement battery" on Amazon.com only to receive something that was pulled from a ...
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0answers
281 views

My MacBooks don't give low power notifications with Mavericks

I upgraded 2 MacBooks to Mavericks recently. Everything was OK for a week, then I started to experience power failures at low batteries on both of them. Looks like as if OS regularly 'forgets' to ...
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0answers
201 views

Has anyone had troubles with an iPhone 4's battery life failing after upgrading from iOS 6 to iOS 7?

After I upgraded my iPhone 4 from iOS 6 to 7, I have experienced my phone running out of power before the end of the day on a night charge (I know it's easy to run a full charge down during the day if ...
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0answers
214 views

How do I get my MacBook to charge?

I have an older MacBook - not the aluminium unibody, the white one. Bought in the US. All of a sudden it has stopped accepting the charge. Once I plugin the MagSafe connector it goes to green ...