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

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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
39 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?
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2answers
94 views

Mid 2012 MBP shuts down claiming no power with charge at 30% or 40% or more

I have two mid 2012 MBPs. Sometime last year they both started randomly shutting down and showing the 'please plug me in to power' image when trying to start them up. That would be fine if the batter ...
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2answers
64 views

Debugging charging problem with MacBook Pro

I have a MacBook Pro (unibody late 2008 15") A few weeks ago the charger was causing hassle and eventually the connector came loose. The MacBook eventually lost power. Then, I asked my friend for ...
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2answers
380 views

Extreme energy usage by Spotlight

I recently (two days ago) updated to El Capitan on my work machine (15" MBP, Mid 2015, 2.5 GHz Core i7, 16GB ram, R9 M370X, 500GB SSD) and ever since then, Spotlight has been draining my battery and ...
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139 views

iPhone Outlook app still fetches mail when in Low Power Mode, while the default Mail app doesn't

I'm trying to compare the default Mail app that comes with iOS and Microsoft's Outlook for iOS. The use case I'm particularly interested in is when the Low Power Mode is enabled. From what I ...
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2answers
77 views

Any way to turn on the reduced power mode a macbook uses under battery power, but while plugged into a power adapter?

I have an external battery rigged up for my MBP. It goes through the magsafe adapter. The battery is about twice the capacity of the internal battery. The problem is, the macbook thinks it is ...
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1answer
15 views

Magic Mouse Battery Plug In

I'm new to mac and everything around, I just want to know if I can code a sort of plug-in to show the batterie of the magic mouse, in the menu bar. What is the type of template i have to choose in ...
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1answer
74 views

Do Sophos and Spotlight conflict and if so, how can I run both applications without problems?

I just got a brand new 13" MacBook Pro at work. I have noticed that Spotlight has been running constantly giving me ~4 hours of battery life. The motivation for getting this laptop was to have the ...
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1answer
34 views

Will Apple service secondhand iPad still under warranty?

I bought an iPad on eBay a few weeks ago. It's still covered under the original Apple warranty. There's a clear problem with the battery. Will the Genius Bar staff look at and service this device if I'...
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65 views

Why a sudden increase in CPU when battery low?

My Macbook Pro (Retina 13" late 2013, OSX 10.10.5) has fine battery life overall - this is not the problem. However, when the battery drops below about 8%, and before I normally get any "your ...
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18 views

iPhone turns itself off on startup

So lately I have got my first iPhone 4S and I have had turned it on for two days straight on a start-up screen as I didn't set it up yet (no time), however it turned itself off while having around 80 -...
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1answer
77 views

iPhone 5s Battery

Ok here's the breakdown: I just bought an iPhone 5s from a girl on the Internet. It wasn't in perfect condition but nothing was wrong to make it not run good. I was only on the phone for about 20 ...
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2answers
69 views

At how many battery cycles should I consider replacing my battery?

My battery has become quite a pain in the neck recently, It's not lasting much more than about 2 or 3 hours and that's usually just using basic programs like chrome or pages etc. It's difficult for me ...
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12 views

iMac retina 27 inch and OS1o.11.4

In System Preferences, the battery level indicator for "keyboard" (bluetooth) seems to be stuck on 100%. It never goes down. But the indicators l for both the Apple mouse and the Apple track pad do ...
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1answer
74 views

3180mAh battery for iPhone 5, is it safe to install?

My battery is very weak in my iPhone 5, and I want stronger battery. I can buy double the size, around 2880mAh, but I want even stronger and I found one on eBay, battery for iPhone 5 with 3180mAh. Is ...
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1answer
40 views

Macbook Air 13" 2014 battery drain

Okay well so this Macbook i have isn't giving me a full time its rather dying our very fast!! even after i don't know resetting the smc and the nvram and i have no idea whats going help its really ...
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2answers
28 views

MacBook Pro mid 2009 reports “Service Battery” but works ok

I get a message saying "Service Battery", but it continues working ok. How do I service the battery?
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1answer
60 views

Test iPhone 4s hardware without battery. Possible?

So, I have this iPhone 4s, which was broken. So i replaced the screen. While I was replacing it, I accidentally broke the black wire that connects the battery to the motherboard. So I dont know if it ...
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0answers
65 views

Severe performance issues with my Macbook Pro Retina 13 - mid 2014

A few weeks ago I bought a used Macbook Pro Retina and I've been having severe issues with it since. The first thing I did when I bought it was to upgrade from whatever version of OSX it was using to ...
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2answers
145 views

How to enable display on Dell monitor connected to MacBook Pro when not charging?

I've just purchased a Dell P2415Q monitor which I've connected up to my MacBook Pro (running OS X El Capitan). Everything works great in terms of the display, however I've noticed that it goes into ...
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171 views

Improving the battery life of Windows under Bootcamp

I run Windows 10 through bootcamp on a mid-2014 macbook pro with a discrete graphics card. The battery life is unfortunately about a half of what the system gets under osx. Other posts on ...
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2answers
153 views

When apple replaces the battery in a 15" MBP retina, do they replace the entire top portion of the case?

Apple's site says it is $199 to replace the battery. Do the techs replace the entire top portion of the case including the keyboard and trackpad? I've read a few things on the internet alluding ...
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13 views

battery diagnostics ipod touch 5g

I recently bought an iPod 5th generation off of Craigslist and I'm pleased with the device, however the battery does seem to run out fairly quickly. This in itself may not be an anomaly, however it ...
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35 views

Why can't I turn on my MacBook after resetting SMC

Lately there've been some problems with the charger of my MacBook 12 inch. I searched on the internet and I was advised to reset the SMC by shutting down the MacBook, pressing shiftalt/optctrlpower at ...
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1answer
29 views

Can I use the battery from an early 2014 MacBook Air in a mid 2012 Air?

I just bought a used mid-2012 MacBook Air to replace the early-2014 model my dog killed but the battery life is terrible comparatively. Can I take the battery out of the 2014 and use it in the 2012 ...
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16 views

What are the specifications of the battery inside a 13-inch MacBook Pro with Retina Display?

The Apple website has the following information about the battery: Built-in 74.9-watt-hour lithium-polymer battery Line voltage: 100V to 240V AC Frequency: 50Hz to 60Hz I need exact ...
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2answers
76 views

Is it safe to charge a MacBook Air after the green LED shows?

Is it safe to charge my macbook after the green light shows? Would it not overcharge the battery, or reduce its lifespan? I've heard that doing this is completely safe and it increases the cycles or ...
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1answer
60 views

Best practices for Macbook Pro usage [duplicate]

I have a new Macbook Pro and I want it to last and keep a healthy battery. How do I best ensure this? If I am using it, do I let it discharge, or leave it plugged in? If I am discharging it / ...
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0answers
84 views

How do you ascertain that the battery drain in an iPhone is software related

So, my iPhone 6 Plus battery has been draining very badly. Whereas I used to get over a day on a single 100% charge, I barely make it half a day now. Even the charging in takes whole night even on a ...
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1answer
94 views

Is it possible to replace battery in an old iPad?

I have an old iPad 2. The battery goes dead when it is unused for only one day. Should I change the battery and if yes, how should I do it?
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3answers
35 views

Should I change my battery?

I Have a MacBook Pro (13-inch, Mid 2009). Now the battery status is "Service Battery". I'm thinking of getting a new Laptop. My question is can I use my laptop even battery is dead by plugged in? ...
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139 views

Apple Diagnostics Reports Bad Battery but AASP Says Battery Is Perfect

I live in Italy. I have a rMBP 15 late 2013. It's performing just fine. It's covered by AppleCare for 1.5 more years. Every month I make Apple Diagnostics tests. I always had the ADP000 outcome, ...
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23 views

How can I SMC Reset with this issue?

Okay so my friend gave me his old mid-2010 MacBook Pro. It has an aftermarket battery in it, the first one died and after his friend put the aftermarket one in it never started. I did the cycle where ...
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2answers
2k views

Why Safari is consuming so much battery?

From last 2-3 weeks I started noticing that my iPhone is consuming more battery than usual, around two to three times more. When I looked at battery consumption details I found out that Safari is ...
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1answer
60 views

mid-2012 Macbook Pro Retina 15" won't recognize new adapter

I recently bought a new power adapter off Amazon, and it worked with my mid-2014 MBP at work and my colleague's mid-2014 MBP, but not my mid-2012 MBP Retina 15" (which, frustratingly, it was bought as ...
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1answer
42 views

MacBook Pro replacment battery recommendations [closed]

I need to replace the battery in my MacBook Pro early 2011. Since my Mac is quite old I am looking for less expensive non-original replacement battery. I only need it to get me through one more year. ...
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0answers
15 views

My iPhone 5c's time will always be not synchronised, every time I leave it alone or it discharges it stops synchronising

I had a question in the topic. Every time my iPhone runs out of battery it won't have the synchronised time. At first, I thought it maybe had a CMOS battery and it had run out of battery, but having ...
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0answers
8 views

Is it possible to see how much time I've been running with the last charge? [duplicate]

Just like in smartphones in which we have a graphic showing the status of the battery since the last charge, is there something like that for a Macbook? Basically I'm interested in knowing how much ...
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0answers
69 views

How does the battery life of the Magic Mouse 2 compare to the original?

I know it's a somewhat inexact comparison (with the 1's AA batteries and the 2's Lightning charger). But if anyone has used both, is there a noticeable difference?
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1answer
33 views

iPhone not turning on when pressing lock button/erroneous charging

When I try to turn on my phone by holding the lock button, it doesn't turn on. It just stays dead. But when I connect the Lightning cable, all it does is show the battery symbol, then go to the ...
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1answer
40 views

Macbook Air recognizes battery while starting, but later says “no battery available” (battery icon X)

I spilled a full glass of water on the keyboard of my Macbook Air 11" mid-2011 (running OS X Mavericks). After drying everything out, etc., here's what happens when I start the laptop: It has to be ...
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2answers
52 views

MacBook Air 2012 won't charge or boot

I have a Mid 2012 11" MacBook Air that won't charge or boot. I've tested the charger with multiple other MacBook Airs, and the charger works fine. I have researched this and have done everything from ...
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0answers
14 views

Ipod Shuffle: Loses Bookmark when Warning of “Low Battery”

I have the strangest problem with my new iPod Shuffle (4th Generation). Normally, the shuffle will automatically remember where you were last when you shutdown the device, and start it up at that ...
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1answer
63 views

iPhone 6 Plus battery reduced to a fourth of what it was recently

I have an iPhone 6 Plus - Bought the Plus size because I could really do with a better battery. The battery used to be excellent earlier - lasting upto 2 days on one full charge The phone is barely ...
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1answer
15 views

Battery discharge

My battery discharges when the ipad Air 2 I own is plugged into the wall for charging and I am using the unit during the course of the day for business. Thus, I am supposed to be charging from the ...
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1answer
309 views

Charging an iPhone 4S with a Samsung USB charger

I have an iPhone 4S that I charge via a USB cable (plugged into my laptop). I also have a Samsung USB charger with the following specifications: 5.0 V and 1.0 A. Is it safe to plug my Apple USB cable ...
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2answers
203 views

Is it normal for a MacBook Pro battery to regenerate itself?

Let me first give a quick background. I got the 2015 MBP 15" with Retina display second hand like a week ago. As every normal person who just switched from Windows to Mac I was doing this and that and ...
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1answer
35 views

Using iPhone as modem - battery damage

I am using my iPhone as a modem, transfrerring a lot of data(4G) over long periods of time (awesome provider plan with lots of internet), connecting it to my laptop with the usb cable. I searched the ...
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1answer
79 views

Replaced iPhone 4S batteries, won't boot, won't recover (even in DFU), iTunes says “Waiting for iPhone”

I've tried multiple machines, multiple iTunes versions, multiple cables, and ports. My phone was originally rebooting randomly. Thinking it was an electrical short problem, I put in a new battery. ...