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

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iphone 5s screen switches from apple logo to low battery sign

my phone is fully charged and a few days ago it would turn off so i would plug it in and just leave it plugged in and it would tun on after a few hours or so. when it would turn back on i would use it ...
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8 views

Battery Charging:: When to charge and when NOT to charge? [duplicate]

I got a new Macbook Pro, I live in Karachi, Pakistan where weather ranges from 20 -40 in summer season and 8 to 18 in winter. I want to know how can keep my battery in good shape? At what percentage ...
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14 views

Late 2013 Macbook Pro Retina 15" crashes after waking up from deep sleep

My MBP crashes after waking up from deep sleep. I also noticed it crashes when I take it off AC power, move to a different location, then hook it back up. I've done the NVRAM/PRAM and SMC resets and ...
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0answers
14 views

MacBook Air Wifi works better when plugged in?

I have a late 2013 MacBook Air, and I've noticed that my WiFi connectivity seems to work much better when the laptop is plugged in, or when the laptop is at full battery. I recently lost my WiFi due ...
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0answers
23 views

Is there a way to make a (non-jailbroken) iPhone look battery dead?

I am looking for a way to make my iPhone look 'battery dead' with no practical short-term means of bypassing. Is there a way to make it? Even hardware modifications or putting something into the ...
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1answer
22 views

How to make battery indicator show battery status instead of UPS battery on MacBook Air

I have a UPS system setup connected to my MacBook Air's dock at home. Whenever I look to check for the percentage of battery remaining on my MacBook Air (when not plugged in), it shows the percentage ...
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9 views

How to open and fix an iPod nano

I have an iPod nano (7th generation, mid 2015) which has been damaged by water. It will come on fine if I plug it into my computer and then eject it, but will lose power as soon as the cable is ...
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2answers
23 views

Magsafe's indicator light goes off, battery gets not charged further

Yesterday, all of a sudden, my macbook pro (15 inch early-2016) started to forget how to charge its battery. According to the battery icon, almost everything looks great but one thing. It doesn't ...
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4 views

Battery Usage Log

I would like to use the battery usage log to check on my kids iPod usage. Will apps show under battery usage if the iPod is plugged in? Am I able to immediately see what apps have used the battery or ...
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1answer
45 views

Does Mac power adapter die if you leave it plugged in?

I have recently bought a MacBook Pro 15". A couple of days ago I had charged my MacBook and left the charger to the socket and it died. When I tried running diagnostics, it showed that power adapter ...
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1answer
18 views

MBP battery won't charge

I have a MacBook Pro Early 2011 model A1278 which wasn't turning on, then I bought a new battery and it ran just fine. But the charger isn't charging it up (the charger is also fine, I tested in ...
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1answer
25 views

Different Computer Modes for MBP

Is there a way to set different modes on my Macbook Pro. For example, I use my MBP for work, school and home. When I am at school I do not have my macbook plugged in to a charger and have to choosy as ...
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1answer
13 views

Will low power mode influence my facetime connectivity (speed and stability) or whatsapp messaging system?

Namely, I have an iPhone 5 with a very weak battery, and I will form now on probably hold it in low power mode at all times. I am wondering if whatsapp messages will take a beating from this, and also ...
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3answers
28 views

How should I store my rMBP for a month?

I am leaving for a vacation and leaving my rMBP. How should I store it except from shutting it down? How much charge should I leave in order not to lose too much capacity?
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1answer
23 views

iPhone auto-power-off after power disconnection

I have an old iPhone 4s that I use as a music player in the car. It is plugged into a cigar-lighter socket that is only powered when the ignition is on. The phone's battery life is not particularly ...
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2answers
25 views

My iPhone 5s shuts down when it has remaining battery

My iPhone 5s was shutting down automatically when it had 80% percent battery. Yesterday I restored it with iTunes and compatible firmware (6.1), now it shuts down at 73% battery. What is the problem ...
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0answers
55 views

13-inch Macbook Pro 2015 Battery Draining on standby/sleep

I've been using my Macbook Pro(13-inch Retina, early 2015) for past 10 months. Initially, it's battery did not used to drain at all during sleep/standby mode, but recently it has started to drain (by ...
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2answers
47 views

My MacBook Air won't charge correctly : the light is green instead of orange

I have a 2009 MacBook Air (MacBookAir2,1) I have a compatible MagSafe and a Apple one. Sometimes (almost most of the time), when the computer is running and not in sleep, if I plug the MagSafe, it ...
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0answers
37 views

MacBook Pro won't turn on!

I was using my Macbook Pro when it turned off. The things I had plugged in at the time were a USB cable to a sound blaster thing and then into some speakers. I also had a second monitor attached, ...
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0answers
42 views

iPhone 4S on iOS 9.3.2 turned off, won't start and doesn't respond when plugged in

My iPhone was almost fully charged, 90% when all of a sudden it turned off on it's own, and it won't start. I tried a hard reset, plugging it into a power outlet and into a laptop with iTunes, I've ...
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3answers
52 views

MacBook Pro turned off and won't turn on!

I was just using my laptop normally when suddenly the whole computer just shut down. I turned it back on straight away and it was fine. Another hour passed and it did the same thing. I could also turn ...
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1answer
17 views

MacBook Pro stop charging at 99%

Most of the time my MacBook Pro stop charging at 99%. But when I check the battery status it says battery is charged. My battery cycles is around 500. Does it means I needs a new battery or it is ...
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1answer
69 views

MacBook Pro 2015 lost battery capacity

I have used my new MacBook Pro Retina for a few days. After three battery cycles, the battery lost capacity from 6960 mAh originally to 6616 mAh now. Is it normal to lose almost 350 mAh of capacity ...
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1answer
44 views

Macbook Pro weight increased after battery replacement

After my battery died I have replaced it in Authorized Service Provider. This costs nearly 140$. However after replacement I noticed that the weight of my Macbook Pro Retina (Mid 2014) has been ...
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1answer
47 views

Will my 14.5V USB-C charger destroy my 9.7 inch iPad Pro?

The charger is the one for the MacBook (29W) and the iPad is the 9.7 inch Pro. Can they be used together without damaging the iPad battery?
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17 views

Late 2014 Macbook battery will not hold charge; US model used in Germany with converter

My sister has a Macbook Pro (13", Late 2014 model), purchased around Christmas 2014 (~18 months ago), which has stopped holding a charge. She can run the macbook fine off of the cord, but it ...
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1answer
56 views

How to schedule airplane mode?

I want to schedule Airplane Mode during the night (10PM–6AM) on my iPhone. How can I do that? I used to turn off my previous phone (a non-smartphone). I do that especially to save some battery life.
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25 views

MacBook Air 2009 using too much battery during sleep - Too old?

I have just bought a MacBook Air Mid 2009 and i'm surprised about the speed it uses battery during sleep. Here are the technical features : MacBook Air 13" Mid 2009 (MacBookAir2,1) Mountain Lion ...
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16 views

How to benchmark iPod mini battery running time / Good iPod mini replacement batteries?

I've got a used 2nd gen iPod mini that I'm planning on retrofitting by upgrading it to flash storage. I got it at a good price and since the thing's 10 years old, its battery probably isn't as good as ...
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70 views

OSX10.11: Completely Disable Spotlight

Spotlight is driving me crazy. It has a constant CPU usage of 100-200% making my laptop run hot and reducing my battery life to half of what it used to be. This is my development machine and I can ...
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0answers
43 views

Installed new SSD now when my mac dies to freezes on restart

I've installed a new SSD not an OEM, but it's a compatible fit to my early macbook pro 2015 with retina 13". When my battery dies it doesnt hibernate my mac, so when I restart it, it freezes and then ...
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1answer
1k views

How does Coconut Battery determine a Macbook battery's design capacity?

A macbook's battery has three charge numbers: The current charge The maximum charge The design capacity Even if a Macbook remains plugged in, OS X does not attempt to charge—as long as (1) is 95% ...
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1answer
25 views

How do I assess how “normal” my battery is?

OS X assesses my battery as "normal" under System Information > Power. I understand that at some point this is going to change to some kind of "we recommend you replace the battery" message. I am ...
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1answer
42 views

MacBook Pro 13" (late 2011) gets extremely hot during normal usage

I'm using a 13" (late 2011) MacBook Pro and it has been getting so hot that I cannot use it on my lap, even when barely any applications are running. I have checked Activity Monitor and there are no ...
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1answer
27 views

iPhone won't boot after installing higher capacity battery

I wanted to upgrade my iPhone 5 to a higher capacity 2680mAh battery, but when I installed it the Apple flashes on and off and the phone will not turn on. I had to reinstall the old battery. Any ...
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2answers
50 views

Will grayscale consume or reduce battery usage?

So I was wondering, if I turn on grayscale, will it consume or reduce battery usage? I want to know because if my phone battery is low I want to keep it running as long as possible.
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1answer
90 views

Why does my iPhone power off when the battery is down to 30%?

Today I was walking using my iPhone 6S running iOS 9.3 as a pedometer and it shutdown. When I got home and plugged it in, it said 30% capacity. That seems strange. I would expect it for 2% or 5% ...
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0answers
55 views

How do I identify a good quality replacement battery for an iPhone?

My iPhone 4s battery was dying, so I replaced it (the battery). But the replacement battery (which was a cheap one from eBay) is pretty poor. The replacement battery looked exactly like the original ...
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1answer
65 views

Why does iPad run out of batteries while it's plugged in?

I'm playing Vain Glory with my iPad Pro plugged into the 12W adapter via the supplied Lightning cable. Screen goes black, battery dead. Takes a few minutes to come back on. Why on earth did the ...
3
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1answer
385 views

Battery Life While Using External Monitor on rMBP is Less

I have a Retina Macbook Pro 2014, in clamshell mode attached to a full HD monitor. I see that battery lasts much less when connected to an external monitor. Is there any explanation to why this ...
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0answers
11 views

MacBook Pro charging tip [duplicate]

I'm about to buy a Mac Book Pro Retina, I'm going to use it mostly at home and when needed I'll take it to my workplace, and so forth. I know it does not have a removable battery, so I'm wondering ...
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3answers
168 views

Does charging my early 2015 MacBook Pro all the time damage the battery? [duplicate]

I am using my early 2015 MacBook Pro as a desktop by connecting it to an external display, thus, it needs to be plugged in to a charger all the time. Does charging my early 2015 MacBook Pro all the ...
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0answers
61 views

My iPhone Won't Charge!

I have an iPhone 6 and I've been using it for around 6 months now. It has never ever fell on the ground or in water so I don't understand. My problem is, my iPhone just won't charge. Here are the ...
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2answers
275 views

Low Battery Alert for Mac OS X El Capitan

I have Macbook Air, Mac OS X El Capitan. There is no warning box shown before the battery is near %15, like it did for Mountain Lion. So I can not notice and my computer goes sleep simply when the ...
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0answers
39 views

Two iPhone users update their devices to the newest iOS version and have their phones fried

Hello Apple Stack Exchange Community! I run a local computer and phone repair shop, and I've run into something I haven't seen before. Two of my past clients, both who take meticulous care of their ...
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2answers
30 views

How to disable “turn off display after” when using Apple TV?

I have my Energy Saver->Battery->'Turn display off after:" set to 2 minutes. This setting is exactly how I want power settings to behave when I'm using the computer on my lap. However, when I hook up ...
2
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4answers
96 views

Does force closing apps have any benefit on iOS devices?

I've gotten mixed answers from various websites and people concerning this question, and I wanted to put it out there for all of you to answer once and for all. The question is, does force closing ...
2
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2answers
281 views

Running Ubuntu on MacBook Pro 2015 — run natively (dual boot) or run in virtual machine for longer battery life?

I currently use Ubuntu in a virtual machine, using VirtualBox software on my host operating system, OS X, on my MacBook Pro 2015. However, the battery life drains quickly when Ubuntu is used ...
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0answers
29 views

How much difference is made on battery life when keeping mobile data switched on along with WiFi?

What if I turn on Mobile Data whole day along with WiFi? In this way, How much more battery is going to be used up? I have WiFi connection at my home.. But sometimes it stops working.. And it's ...
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2answers
38 views

Fine to keep macbook on power for unlimited time? [duplicate]

I just got a used Macbook Pro (retina) 2012 running El Capitan. I am keeping it charged and on all the time. Is there any harmful effect from doing so on the battery in the long term?