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)

4
votes
4answers
22k views

Is it wise to turn off the iPad completely if I don't use it during the day?

A friend of mine has an iPad that she uses only once a day for about a half hour. I told her to turn it off completely in between uses to conserve energy - no point having the device run in standby ...
-1
votes
3answers
535 views

iOS 6 kills battery life

I live in the Boston area (zip code 02421). Since upgrading to iOS 6, both my iPhone 5 and iPhone 4S are getting really hot and last only 4 hours maximum, even in standby. Also, AT&T notified me ...
0
votes
1answer
36 views

More Email Account cost more battery?

I have around 15 email accounts, if i setup all that's 15 emails in iPhone with IMAP method. Will it cost more battery than i just only setup 1 email account?
1
vote
2answers
4k views

Why would an iPhone 4S drops from 100% charge upon unplugging it?

I have notice lately (in last two months or so) after disconnecting my iPhone 4s (with iOS 6) from the charger in the morning after an entire night of charger it immediately drops from 100% to 98%. ...
4
votes
3answers
4k views

iPhone 4S/IOS6 - battery drain after the camera usage

I just discovered that my iPhone4S/IOS6 battery drains too fast after I use the camera. So: After the fresh restart the phone lasts 3 days - when not taking photos or videos. Even if I take one ...
1
vote
2answers
5k views

How does using GMail via IMAP or Exchange affect battery life?

What are the differences with respect to battery life between using the regular Gmail setup as opposed to the Exchange setup? I know that the Exchange allows for push, but is battery life affected ...
2
votes
2answers
349 views

First cycle of MacBook battery: runs at 97% capacity, is this normal?

I ordered my brand new Macbook Air with 8 GB RAM and picked up from Apple Store two days ago. However after fully running out of battery for first time, I recharged it to 100% and coconutBattery says ...
0
votes
0answers
350 views

Battery health inconsistent

With the iStat Nano dashboard widget I can see the health of the battery on my 10.6.8 Macbook Pro. This health value jumps from 76%, to 84%, to 80%, etc. just in a few hours. I've reset the SMC ...
0
votes
1answer
549 views

System clock reset to Jan 2001?

I got an error message saying something like "System clock reset to Jan 2001" and then many things stopped working. I has my laptop in standby mode and the battery must have gone completely flat ...
1
vote
2answers
1k views

Brand New Macbook Pro (Mid 2012) already with 2 cycle counts

Yesterday I unboxed a MacBook Pro (Mid 2012) and I am disappointed that the battery has less than its "manufacturer capacity" and has 2 cycles already. Is that normal?
-3
votes
2answers
2k views

What's broken in my iPhone

I just got my friends' iPhone and he claims he's broken. So I sent it to a repair centre and they told me the logic board was broken. However, when I try to recharge the iPhone by plugging it in the ...
1
vote
1answer
927 views

Can CPU Speed Stepping be prevented?

A while ago, I asked a question regarding the reason behind my computer slowing when it had ~5% battery or less. I was told that it was either CPU speed stepping or the Macbook Pro automatically ...
2
votes
2answers
3k views

How often should I remove the charger from my rMBP?

I want my battery to remain healthy. I used to charge it full then remove the charger after it's done, then put it back on when it goes down to 10% .. However this is becoming hectic and I was ...
0
votes
0answers
125 views

iBook battery repack

I have several ibook batteries that have gone bad and I was wanting to open them up and make some good batteries out of all of them by taking out the bad cells and putting other ones in there place, ...
8
votes
3answers
16k views

What are real life iPhone 5 battery run-time expectancies?

I got my iPhone 5 this week. While browsing with Safari, on WiFi (which I am using to post this question), my battery life drops at a steady rate of 1% per 5 minutes. I have been timing it from 64% ...
0
votes
1answer
652 views

iPhone battery life: Siri or iOS 6?

I updated my iPhone 4S to iOS 6. I suddenly activated Siri (because finally it comes in my language) and in this days I noticed that my iPhone battery life is less than previously. This problem is ...
2
votes
1answer
8k views

How much does it cost to service a MacBook Pro battery?

I have a mid 2009 MacBook Pro and I just got a message saying that I should service my battery. I tried to reset SMC and NVRAM but the problem persists and I fear I'll have my battery replaced. How ...
3
votes
1answer
283 views

Why hasn't my battery life improved even though I changed the battery?

I have a mid-2009 white MacBook. About a week ago, I switched the aging and failing battery for an identical new battery I got off eBay (supposedly original part and new - looked legit both in ...
0
votes
1answer
541 views

Fixing MBP battery which has been sitting

I have a new battery that has only 3 or 4 cycles on it, that I got as a replacement a year ago. The battery and the machine it's in, a late 2008 MBP, has been sitting for the last year unused. I tried ...
2
votes
1answer
637 views

How can I disable CPU throttling on Late 2006 MacBook with no battery?

The problem I am experiencing is that if the battery is not present, the CPU is automatically throttled. I have done some searching and have found that this is apparently by design, "in case the ...
2
votes
1answer
660 views

Should the MacBook Air have the same amount of charge as its stated capacity when 'Full Charged'?

The following is an extract from System Information (under power): Charge Information: Charge Remaining (mAh): 6517 Fully Charged: Yes Charging: No Full Charge Capacity (mAh): 6690 ...
1
vote
1answer
315 views

Would a 2.6 Ghz CPU drain a laptop's battery faster than a 2.3 Ghz CPU?

Apple offers the MacBook Pro with two processor options -- 2.3 Ghz and 2.6 Ghz. I'm wondering if the more powerful CPU drain the battery more quickly by any significant degree. (And incidentally, ...
2
votes
2answers
6k views

When streaming movies online, should I keep the computer on the charger?

I watch a lot of movies streaming online. Should I keep my computer on the power cord, or should I charge the unit completely, remove the power cord, then wait till it gets to a low battery and plug ...
1
vote
2answers
4k views

How can I triage a MacBook Pro that won't charge with the LED dimly lit green?

I have an early-2011 MacBook Pro that will not charge. The green light on the MagSafe connector is barely green. Besides the fact that the system info tells me the battery is not charging, the ...
0
votes
1answer
85 views

Charging behavior of iOS devices

Does the speed at which the battery of an iOS device charges vary depending upon whether it is being used or not? For example, when I am charging an iPhone in my car, will it charge faster when not in ...
3
votes
1answer
4k views

Can a MacBook Air battery be replaced?

I have a MacBook Air which is an awesome computer, however I am curious what my options will be when the battery finally kicks the bucket. Can it be replaced?
12
votes
5answers
60k views

How to maximize Macbook pro retina's battery life when working with AC power?

I'm working 95% of my time with AC power and Thunderbolt Display. Since macbook pro retina's battery are no longer easily switchable I'm concerned about it's life and would like to maximize it. Before ...
4
votes
1answer
522 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 ...
2
votes
3answers
368 views

Will using my iPad as an external monitor negatively affect it's lifespan?

I'm using AirDisplay to allow me to use my iPad as an external monitor for about 10 hours a day. I have it plugged into my Mac the entire time (so the battery doesn't completely die). Will this ...
4
votes
2answers
27k 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 ...
1
vote
1answer
220 views

How to check how much battery each application uses?

How would one check how much battery an application uses from a full charge of 100%? Are there any applications out there or is this impossible?
54
votes
7answers
39k views

I am missing the option to see the remaining battery life as time in the menubar?

In previous versions of OS X the battery indicator in the menubar included options to show the remaining battery life as percentage or time (or nothing). In Mountain Lion, there's only an option to ...
-1
votes
1answer
607 views

Using iPhone's GPS in remote areas

I plan to go hiking in an area where I do not anticipate there being much cell coverage at all. What there is will likely be very spotty. I would like to use the All Trails app to track my progress ...
3
votes
2answers
23k views

Is it possible to buy a genuine iPhone battery online? [closed]

I searched for an iPhone 3GS replacement battery on Amazon and while many items claim to be original/genuine, a lot of reviewers still complain that they are not/not as described/do not work well. Is ...
5
votes
3answers
10k views

Charge from USB on computer or wall socket?

Is it OK if I keep charging my iPad and iPhone using the Mac USB ports? Or is it better to charge them with the supplied chargers? I understand that charging slowly is better (though I'm not sure why)...
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

Battery cycles for rMBP and recharges?

So I got my first Apple laptop, a Retina MacBook Pro. I heard that its best to let the laptop discharge until 0% in order to restart the battery cycle or something like that. However I know that ...
3
votes
2answers
926 views

Disable Spotlight indexing, save battery life

I am using my laptop with very limited battery availability. I need to save as much battery as possible. I would like to disable Spotlight indexing, how do I do that? What else should I disable, ...
2
votes
0answers
238 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 (...
3
votes
1answer
6k views

MacBook Pro Battery Life Problems - only 2 hours with light usage

At some point in the past 2 weeks, my MacBook Pro (13", early 2011) began running hot and getting poor battery life. The battery life used to last 4-5 hours even when I was using it regularly. Now, ...
2
votes
3answers
2k views

MacBook Pro battery drains quickly, shows Service Battery when restarted

The new battery is an A1175 on a MacBook Pro (2008). The specs are that this battery should hold a capacity of 5600 mAh. OSX Lion System Information reports: Full Charge Capacity: 4936 mAh ...
5
votes
2answers
6k views

Which Personal Hotspot mode uses least battery?

Both iPad and iPhone's Personal Hotspot mode allows 3 ways to connect: WiFi USB cable Bluetooth I want to use Personal Hotspot on my MacBook Pro, this means that I can use either of the three. ...
2
votes
1answer
483 views

2007 battery replacement for 15" pro. 85w now 60w? Help!

I'm looking at a replacement battery A1175 for my 2007 15" pro (specs here: http://support.apple.com/kb/SP17), which is listed as 60w. My original battery charger was 85w. Is this going to work?
3
votes
1answer
29k 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 ...
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 ...
2
votes
4answers
3k views

Can someone read messages on my locked iPhone?

I left my iPhone in a taxi cab. I locked the phone to make sure nobody finds it and makes expensive calls. But does locking the phone prevent someone from seeing the texts I am sending? What if the ...
3
votes
1answer
6k views

Does activating Find My Phone deplete the battery on an iOS device being tracked?

My phone is currently riding around New York City under the seat of a taxi cab. I'm watching its progress with the Find iPhone app. My concern is the phone may soon die and a rider or driver will ...
1
vote
1answer
1k views

4th gen shuffle battery, no lights or charge

My 4th gen ipod has not been used for some time, I have a new usb to jack cable for charging it. The shuffle shows no signs of life, no lights, when I plug it into the wall or computer(different docs,...
0
votes
4answers
799 views

My iPod Touch 2nd generation is dead

My iPod touch does not respond since yesterday. I cannot see anything on the screen and the buttons don't do anything, no backlighting either. The problem started when I wanted to plug my iPod into ...
3
votes
2answers
938 views

MacBook Pro: OS battery indicator doesn't match hardware battery indicator

I recently upgraded my MBP to Lion, and now the battery indicator in the menubar at the top of the screen constantly shows "(Charged)", even when the indicator on the side shows almost empty. Any ...