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52

Technical Lithium Polymer batteries, such as those used in the iPhone, are a very well understood battery chemistry and use specific chargers to manage their charging. While the latest charging ICs Apple uses are proprietary (they work with Dialog for their power managment ICs) it is unlikely that Apple performs a significantly different charging process ...


22

No, it's not harmful. Modern phones are smart enough to stop the electric current when fully charged. That may have been a problem before lithium-ion batteries, but nowadays you shouldn't have to worry about it. However, if your iPhone has a case that doesn't allow heat to escape very well, it might be better to remove the case to avoid overheating. ...


5

No it does not. Nightly charging is the norm today for many people, and unlike older technology from a few years ago, today's lithium ion based batteries use newer technology and battery life is not damaged with nightly charging. All batteries wear out eventually, but unless you are charging multiple times per day, your battery is likely to outlast your ...


5

Leaving the iPhone to charge overnight doesn't affect your iPhone drastically. As phones are very smart, once it gets fully charged, it knows when to stop the current from coming in to protect the phone from overcharging. But there are also some reason which can affect your iPhone plugged in overnight, this can leads to slow down the lifespan of your iPhone. ...


4

As someone who works for a battery specific retailer and is asked this question a lot, the answer is "it won't hurt it in the short term, but in the long term it will shorten its lifespan." Between your phone's charging system and the internal circuit board built into the battery itself, there are enough layers of protection that will prevent either your ...


3

According to Apple, when an Apple device reaches full charge, it stops charging. It's true for their macs and all other devices.


3

Your battery will only take as much as it needs. Thus a larger charger will not harm it.


2

The charge controllers which charge the battery are really smart. They are designed by really great companies such as ST Microelectronics. These charge controllers typically have many features. (I don't know if the ST ones I linked have all of them. I just pulled those parts out of the air). Every Lithium battery charging IC will have a smart charging ...


2

Follow those instructions for single-user-mode, then when you are done, type "exit" and copy some of the first few lines of the output - on paper if you need to. I'm mentioning this because I skipped the exit step a few times, but more interesting things might come up there. When I brought the lines with me and showed them to the Apple tech (genius) he ...


2

For some operations certain models require more power than the Power Supply alone can deliver at a given time. For this incident it relies on additional power from the battery. It is to be assumed that that is your machines issue. You'll probably need to get that battery replaced. The price is usually between 120-150 at an Apple Certified Repair Center in ...


2

There is an explanation in the footnotes: 2 Testing conducted by Apple in February 2015 using pre-production 2.9GHz dual- core Intel Core i5–based 13-inch MacBook Pro units. The wireless web test measures battery life by wirelessly browsing 25 popular websites with display brightness set to 12 clicks from bottom or 75%. The HD film playback test ...


2

‘²’ indicates there’s a footnote. It means, see the second footnote. It doesn’t mean the battery life is 10² hours, though that would be awesome.


1

That battery, while not old from age, has seen some, and then some more. The charge count shows it as half life, but the charge it can hold shows it as 1/3 of life left. The Service Battery is only a suggestion so do not wary about that one. The Replace battery is the next you get, and then the Replace Now is the final stage. Considering the Charge it can ...


1

With express service you'll get a replacement device before sending back your old one. That way you don't have to spend time without a device. It's available under warranty but will be charged. Price in Austria is 29€ incl. TAX to give you an idea.


1

Yes, the warranty covers battery failure. The batteries capacity can be measured in mAh. If Apple sells it with 1000mAh, then 500 would mean 50% (example numbers). I'm not sure at what percentage Apple considers a battery failure but I'm strongly assuming 50% within a year is considered a warranty case. Call AppleCare or take it to a store. They will ...


1

According to Everymac's MacBook Pro listing, there is no such thing1 as a MacBook Pro 13" Late 2008 5,1. The earliest 13" MacBook Pro was a June [Mid] 2009 5,5. The smallest Late 2008 5,1 model was only 15". To clear things up: Maybe you mean MacBook and not MacBook Pro? Is it a Unibody model, or Pre-Unibody? Is it really a 13" or 15"? Is your battery ...


1

You probably knocked the battery connector out. Here's a link to a repair guide to replacing the whole battery, which is more than you need. Do steps 1 and 2 to open your computer up, and then make sure the battery connector in Step 3 is 100% plugged in. If it's fully plugged in and it's still not working, the battery itself is probably shot.


1

Possible bad news, you should have gotten Replace Battery warnings way before, that you could not missed. What it indicates is your Logic board is failing where the SMC chip sits on it. You can open it and take battery out, then place it back in, but that is slim hope. Before you spend a fortune in replacing the logic board: There is a small circuit build ...


1

Yosemite startup hanging at 50% is something we've seen a good few times, and a couple of users got so fed up with it being a recurring issue they asked for a roll-back to Mavericks. The first thing to try is boot into single-user mode (Command + s at startup) and run a disk check with the command /sbin/fsck -fy. Once that's done try starting in Safe Boot ...


1

Here is a place you can learn all about Batteries. Battery University. and from Apple here To you question on 8+ hour, the new MacBook Air (2104 model) has that. The 11-inch MacBook Air lasts up to 9 hours between charges and the 13-inch model lasts up to an incredible 12 hours. The cycle count is only one of the indicator and can not be used as ...


1

Unfortunately, information would not be attainable simply through the serial number. It is unlikely that you obtained the incorrect battery, since AASP's source their parts from Apple to perform warranty-service repairs. I poked around online and noted that you are not the only one who has the bq20z45 part number from SMP, nor the only one to have a Full ...


1

From https://www.apple.com/batteries/maximizing-performance/#ios: Home & Lock Screen. This indicates that the Home screen or Lock screen was displayed on your device. For example, the display was awakened by pressing the Home button or by a notification. If an app frequently wakes your display with notifications, you can turn off push ...



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