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

learn more… | top users | synonyms (1)

3
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 ...
2
votes
0answers
36 views

App to allow battery charge only to a certain extent

I'd like to charge my rMBP battery only up to 85% or 90%, in order to preserve it. Is there any app that stops charging at user selected percentages? If not, is there any other method? (Apart from ...
2
votes
0answers
398 views

iPhone 4S 64GB not charging unless switched off

My iPhone is simply not charging unless I switch it off while it is already plugged in. I suspect it to be a software problem, as when its off it charges. Windows does not seem to recognize the device ...
2
votes
0answers
43 views

Why is my rMBP drawing twice as much power as my friend's when idle?

Mine is late 2012 and has 8GB RAM. His is late 2014 and has 16GB RAM. Both have an SSD (although of different size) and both are running Yosemite. We set the brightness to 6 pips each and turn off ...
2
votes
0answers
37 views

I accidental went swimming with my iPod Touch 5th Generation

Today, I went to a river and forgot that my iPod was in my pocket. I was in there for about half an hour, and only noticed it once I was changing into my other clothes. Is there anything I can do to ...
2
votes
0answers
600 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 ...
2
votes
0answers
424 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
votes
0answers
192 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 ...
1
vote
0answers
76 views

Low Battery Crash with no Battery Usage on ipad 2 with ios 8.3

My iPad 2 has been crashing recently with no warning and then takes several hours charging before it comes back to life. When it crashes there is only a low battery icon, and no charging symbol when ...
1
vote
0answers
25 views

Incoming call is not registered on iPhone if iPhone turns of before I pick up

The situation: iPhone is low on battery I receive incoming call I try to pick up and phone turns of during that moment In this situation incoming phone number is not registered on the recent call ...
1
vote
0answers
42 views

My Macbook Pro says I'm connected to a power source even when unplugged

I have a Macbook Pro mid-2010 (Macbook 7,1) that is acting a bit weird. The battery status always says I'm connected to a power source even when the charger is unplugged. The battery still discharges, ...
1
vote
0answers
177 views

Macbook pro mid-2010 randomly turns off?

This has been happening for around 6 months and it has gotten worse. I thought it was the battery because it had close to 1500 cycles. But I recently replaced it and now the problem seems worse. The ...
1
vote
0answers
350 views

Tweaking OS X 10.10 Yosemite to auto-toggle Reduced Transparency when on battery

I am curious about whether there is a way in OS X to hook to some events to find out whether the laptop is plugged into power. (And furthermore how we can control the "Reduced Transparency" settings ...
1
vote
0answers
115 views

Estimating battery life remaining while charging in OS X

Retina Macbook Pro's battery life is amazing, and it is handy having an accurate estimate of how much longer it will last on the remaining charge, in hours and minutes. While charging however, it ...
1
vote
0answers
274 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 ...
1
vote
0answers
141 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 ...
1
vote
0answers
69 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 ...
1
vote
0answers
106 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 ...
1
vote
0answers
71 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 ...
1
vote
0answers
43 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.
1
vote
0answers
44 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 ...
1
vote
0answers
126 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 ...
1
vote
0answers
101 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; | | ...
1
vote
0answers
448 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 ...
1
vote
0answers
66 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 ...
1
vote
0answers
485 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. ...
1
vote
0answers
77 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 ...
1
vote
0answers
126 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 ...
1
vote
0answers
978 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, ...
1
vote
0answers
285 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 ...
1
vote
0answers
645 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 ...
0
votes
0answers
54 views

iPhone 5s is draining battery really fast like 2-3% in a minute

I have taken all the measures which can fix battery life for example turning off location service, disabling push notification etc. My iPhone is updated to latest version i.e 8.3 and i have even done ...
0
votes
0answers
33 views

iPhone 5s iOS8.3 battery indicator fritzing

I noticed today that the battery indicator on my almost 6-month old iPhone 5s was giving me inaccurate readings. Throughout the day, it was draining normally until it reached 20%. As soon as it ...
0
votes
0answers
27 views

Testing an iPhone 5C without a battery or screen

I have a previously broken iPhone 5c that I removed the offending parts from. The screen was shattered beyond repair, and the battery was in pretty bad condition. I'm planning to buy some new parts ...
0
votes
0answers
52 views

Calculating battery capacity (in mAh not percentage) without removing battery

Phone batteries wear out over time, having less and less capacity to store energy. The iPhone keeps a counter of battery cycles or charges, but this does not speak to the issue of battery capacity. ...
0
votes
0answers
17 views

Charger Help what do i do?

My brother just bought this iPhone 4 (black) online from eBay and for a month it was perfectly fine. Then he gave it to me and on my third day with it, it wouldn't charge when I woke up. The phone is ...
0
votes
0answers
66 views

New MacbookPro 13 Retina MID2014, temperature issues

Bought this Mac two weeks ago, and I used to have a MacbookAir. I believe in my MacbookAir the battery temperature usually stayed around 30 Celsius while using it, even heavily. With my new Macbook ...
0
votes
0answers
36 views

MacBook Pro 10.6.8 mid-2011 and HP Compaq LA2205wg working only when MBP on battery

Weird behavior of MBP and external HP screen. When MBP is on battery - everything works perfect. But when power supply is connected to MBP - external HP screen is going black. "Monitor going to sleep" ...
0
votes
0answers
49 views

MacBook Air Mid 2011 battery not charging

My battery will not charge. The ac is connected and it is a new. The green light is on. I have tried the reset. Any Help? Here is the stats:Battery Information: Model Information: Serial Number: ...
0
votes
0answers
106 views

Resetting SMC on a Macbook Pro

About a couple of weeks ago, I tried turning on my Macbook Pro and it seemed completely dead. I plugged in the power cable but it still didn't work. Since it's not under warranty anymore, I opened up ...
0
votes
0answers
54 views

1.7 GHz Intel Core i5 10.7 Macbook Air Water Damage… still works… Battery issue

While on a flight in June 2014, the guy next to me put his drink in the gap between the tray and his cup spilled liquid below including on my macbook air which was in the pouch. Unsure of whether ...
0
votes
0answers
58 views

iphone 4s won't hold a charge

I updated my iphone 4s operating system to 8.1.3 , now the battery drains from a complete charge in about 5 to 6 hours on stand-by. I replaced the battery with a battery I purchase online. I thought ...
0
votes
0answers
63 views

Apple logo flashing?

Last night my iPhone 4s suddenly crashed and I thought it was because out of battery, even though it was still at 17%. I plugged it in and left it for about 10 mins and it turned back on but it was ...
0
votes
0answers
37 views

iPhone 4S battery life

I checked Settings > General > About > Diagnostic & Usage > Diagnostic & Usage Data, I was able to see log starting with 'LowBatteryLog...' So there is a problem with the battery - what is ...
0
votes
0answers
215 views

Macbook Pro doesn't boot with replacement battery. 15 inch late 2011

I bought this replacement battery for my 15 inch Macbook Pro late 2011: http://www.amazon.ca/dp/B00OD7OHLY/ref=sr_ph?ie=UTF8&qid=1419964742&sr=1&keywords=macbook+pro+late+2011+battery ...
0
votes
0answers
42 views

Macbook turns on with loud fan noise

Whenever I try to turn on my Macbook, the fans are super loud straight away. My battery is removed (manually because it looked like it was going to explode). I tried to reset the SMC, but that did ...
0
votes
0answers
88 views

How to identify dead battery in Macbook pro 15" Mid 2010?

I have a Macbook Pro 15" Mid 2010 and I believe it has a dead battery. When I plug in the magsafe adapter it glows green, but the Macbook will not boot when I press the power button. When I press the ...
0
votes
0answers
64 views

How to determine USB device charge battery level?

I am trying to get battery state of Jawbone UP24 connected to USB. Using this command: system_profiler SPUSBDataType I got this result: MotionX Band: Product ID: 0x0002 Vendor ID: ...
0
votes
0answers
60 views

How to make iPhone turned on after charging

I often charge my iPhone when it ran out of battery. I often postponed charging my iPhone until it really run out of battery. After I charge my iPhone, I usually go to sleep or rest or forget about ...
0
votes
0answers
71 views

iPhone 3g battery drops from 60% to 0%

My friend gave me his old iphone 3G, which I've brought to an unlock-service so I can use it using my own simcard. It works, but sometimes the iPhone suddenly stops working while the battery still ...