Questions tagged [battery]
Concerning devices that store electrical power which can be used to run various devices in the absence of external power.
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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 ...
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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)...
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MacBook Pro randomly discharges from 100% to ~90% when plugged
My 15 inch 2018 Mac Book Pro with Mojave 10.14 randomly starts draining battery when plugged in. When I try to move the cable, change the power cable to a different USB slot nothing helps. The battery ...
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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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Are there any deep details on the specifics of what the “Low Power Mode” in iOS 9 actually affects?
So as mentioned in this canonical question and answer thread on iOS 9 features, “Low Power Mode” is a good thing. This is what iOS 9’s blurb on “Low Power Mode” explains it does when activated:
Low ...
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Is it good to keep apps closed on iOS devices?
Is it better to keep apps closed (double tap home button, hold the icon, and exit the app), as much as possible on iOS devices? I know the more apps one has open, the more RAM, for example is used, ...
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What could cause MacBook battery cells to swell up?
I have a problem with my 3 year old MacBook. The battery has "swollen up" (I could post a picture if that is of help).
One side of the battery is much bigger than the other. Since it no longer works, ...
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Does the grayscale feature of iOS 8 extend the battery life?
In the way to reduce the power usage of my iPhone 5 (iOS 8), I'm simulating the power saving mode of Samsung Galaxy Note 4 by turning on the "Greyscale mode"
but does it really reduce the power usage ...
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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 ...
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Incorrect battery charge percentages
I bought a new battery for my Macbook. Besides not giving an accurate indication of the battery (due to a calibration issue I guess), it gives a different value to the Mac and the coconutBattery. What ...
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Does charging to 100% damage an iPhone battery
I have an XR and as I am indoors a lot of the time, my phone does spend a few hours charging at 100% (although I unplug at night). It's rare that I let the phone run past 80% and even rare that it ...
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Maximize iPhone battery lifespan by keeping it plugged into power whenever possible
I know, sometimes it can explode, but is it a good advice to let the iPhone - whenever possible - plugged in to a power outlet in order to maximize battery lifespan (so it's almost always at 100%)?
...
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How to determine the cause of MacBook battery not charging?
I see that the question "why is my MacBook not charging?" gets asked a lot. The problem is, there are multiple reasons. Possible points of failure are: charger, cable, magsafe connector, DC ...
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Can I use a CR2025 battery instead of CR2032 for my AirTag?
I started to see that one of my AirTag batteries was getting low so I decided to change it. I already bought some CR2025 batteries already and when trying with one, it seems to work perfectly fine. ...
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How do I prevent my MacBook Pro from dimming the screen on battery power?
I sometimes work on my MacBook Pro in the car (from the passenger's seat, of course) and it is impossible to see anything unless the screen is on the maximum brightness. Every few minutes, however, I ...
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How many hours since I unplugged my Mac?
Mobile phones usually say this as "xyz hours on battery" by counting the time from when they are unplugged from power.
Can I find out how many hours has it been since I unplugged my Mac from charging ...
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What is the font the battery percentage uses?
A bit of a stupid question, but what is the font the battery percentage (pictured below) in OS X uses?
It is not the standard font you can get by calling [NSFont menuBarFontOfSize:0], I have noticed.
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iPad Pro 10.5" down to 92% battery health after 6 months of use (update: 84% after 1.5 years)
I bought an iPad in January 2018 (this was written in July 2018). The coconutBattery app indicates it was manufactured in August 2017. It has gone through 63 charging cycles and the battery health is ...
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Macbook pro 13 inch 2017 W/ touch bar - battery drain during sleep
OS Version I'm on is High Sierra 10.13.2
My battery seems to drain way too much on my new MacBook Pro 13 w/ Touch bar 2017 when it's supposed to be sleeping. Things I've done after reading other ...
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MBP Battery Consumption and Charging Speed app?
I'd like to know if there is an app that shows you how fast (how many Watts) the MBP is consuming and how fast it is charging (Watts and Voltage).
I know that there is the Activity Monitor but it ...
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New MacBook Pro Retina, bad battery?
I just purchased a brand-new MacBook Pro, Retina (15" screen). The "Hello" pamphlet in the box starts out:
Your battery is charged and ready to go, so you can start using your Mac right out of the ...
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Get notified when battery is charged
Is there a way to write a custom apple script or any other way to get a Alert or Desktop notification when the battery on my Macbook Pro reaches a certain percentage of charge?
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Battery indicator is not moving further from 96%
I bought a new macbook pro, till the day I bought the battery indicator is not moving further from 96%.
I wonder if there is a problem with the battery because if I unplug my power cable it is still ...
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Quality factors relevant for getting a replacement battery (MacBook Pro (13-inch, Mid 2012))
The battery in my computer (MacBook Pro (13-inch, Mid 2012)) is due:
I'd like to buy a new one. I'm looking for something efficient, i.e. having a long battery time and with the most refill.
What ...
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iPhone 6 charging best practices
Should I charge every night? (Assuming that I consume more than 50% during the day, but sometimes not much more.)
Should I turn off the device during the charge? (Assuming that I don’t need the device ...
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Understand iOS Low Battery logs
Good morning everyone. I'm kinda new to this site but I see there are many expert opinions, so I would submit to you my question, hoping it will be helpful for someone else. Before proceeding, I beg ...
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What's the difference between the battery of iPhone 5s vs iPhone 5?
Do they have the same capacity and/or run time for certain identical tasks?
I know iPhone 5's battery has a charge capacity of 1440mAh. Has this been improved in the new iPhone 5s and/or iPhone 5c?
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Should I expect battery life on an iPhone 4S to be significantly worse than on a 3GS?
I just upgraded from a 3GS to a 4s and my battery life is dramatically worse. I wasn't expecting it to be the same (though I was hoping that it might even be better), but I'm seeing a big difference. ...
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Is there a hidden way to fast charge an iPhone/iPad from a newer USB-C Mac?
I am charging my iPhone from a newer Thunderbolt 3/USB C enabled MacBook (in my case MacBook Pro 2016) with USB C to lightning cable from Apple.
What I know is:
For example there is an iPhone 8/8 ...
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Why my Battery status color in the menubar is Red while it is charged more than 20%?
I left my MacBook Pro 13-inch, Early 2011 running OS X 10.11.6 for half an hour while was charged more than 50%, and when I came back, I saw the Battery status color in the menubar is red while it was ...
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iPhone battery life is awful even after replacing it
I have an iPhone 3gs 32gb. As they do, my battery was noticeably depleting as well as conflicted with the device having been slightly water damaged (dropped in quickly but immediately turned off and ...
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How do I stop automatic Bluetooth streaming?
When my iPhone connects to Sync in my Ford truck it automatically starts playing music on my iPhone. This kills the battery. Autoplay on the Sync system is off.
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Macbook Pro 15, 2017: Discharges in Sleep mode
My Macbook Pro 15, 2017 loses full charge (from 100% to 0%) during a 9 hr SLEEP duration.
Running this:
pmset -g
Throws the following result:
System-wide power settings:
Currently in use:
lidwake ...
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Does replacing an iPhone/iPad battery reset the battery stats?
I have purchased a refurbished iPad. It is from a Apple-certified repair shop, but I understand this is not the same as Apple refurbished.
On a MacBook with an internal battery, I can see in System ...
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MacBook Pro battery percentage jumping down and up
Recently, my 2011 MacBook Pro 13' produces strange instantaneous jumps in battery percentage. Sometimes, when it is discharging, it drops by ~40% (and if it was near or at less then 40%, it shuts down ...
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How can I reset the service battery warning?
I learned from one of my other questions that the "Service Battery" warning will limit your CPU power and slow your computer down - this is a problem I've been having with my MacBook Pro.
I have 906 ...
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iPhone 5 Battery - Help me diagnose issue
I'm having a weird issue with my iPhone 5, that I think is related to the battery, but might be something else.
Symptoms
The battery indicator is wrong. It sticks to the value it fetches when ...
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iPad boot loop only when powered - brief flash loop when connected to USB - jailbreak gone awry?
Received an iPad from a customer in an unknown state. Report was "does not power on". Device is out of warranty. It's the 1st generation iPad with a 3G chip.
Symptoms:
when connected to power only, ...
zentech
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Macbook Pro Battery / Discrete Graphics Card Issues in 10.8.2
I am posting because I currently have a 15'' Macbook Pro (Early 2011 edition) and have suffered from poor battery life since upgrading from Mac OS X 10.7 to 10.8.
Before the upgrade, I could use my ...
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How to configure hibernate on macOS Monterey?
For the life of me, I cannot get macOS Monterey to hibernate on my 2015 MacBook Pro on battery power.
Here is my pmset -g output while on battery:
% pmset -g
System-wide power settings:
Currently in ...
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MacBook Pro doesn't automatically go into Hibernate/Safe Sleep on empty battery (M1/Big Sur)
Long gone are the times when my MacBook Pro 2012 automatically went into hibernate when the battery was low. I always blamed it on my old battery. I recently bought a MacBook Pro M1 though, and was ...
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MacBook Pro 2020 running Catalina 10.15.6 does not sleep at night
I've had this issue for about a month. I've done the factory reset and my Mac was fine for a week but is now slowly going back to draining the battery overnight. I've tried everything to fix it and I'...
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iPhone suddenly drains battery quickly, but only sometimes
My iPhone 7 normally lasts about a week, but sometimes it suddenly starts draining very quickly. I have Background App Refresh completely turned off, and I wasn't using the phone at all when the ...
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How to resolve my mac dying at 75% battery?
Tl;dr
My 2015 Macbook Pro Retina shuts off without any warning when the battery discharges to 75%.
According to Coconut Battery
Design Capacity: 56.7%
Made in 4/13/15
Has lasted 3,268 cycles, and the ...
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How many lithium-ion batteries does a M1 MacBook Air (2020) have?
I would like to ship a MacBook Air (M1 model released in 2020) from Japan to South Korea via EMS, but the EMS website says it is not possible to send a machine that has more than 2 lithium-ion ...
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Is it safe to turn the iPhone 4 off for over a week
I am going away on holiday for a week but don't want to take my phone with me because I'm afraid of running up a huge bill, is it safe to turn the phone off for this long? Or can it damage the battery?...
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First steps after acquiring a new MacBook Pro (w.r.t ensuring optimal battery life)?
I just unboxed a new MBP 13.3 inch i5. I wanted to know what is the best way to start using it, so as to ensure optimal battery life i.e.
Should I charge it to full capacity, before even booting it ?...
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Why would a new MacBook Pro charger fail in one month?
I've got a new MacBook Pro 15" that comes with the 87W USB-C adapter from US.
I live in Turkey and I've got all my MacBooks from US with US chargers, and had no issue with them (as they are meant to ...
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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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Strange loading screen when MBP battery dies and reboots
I have a 2007 Macbook Pro and for nearly two years, the battery has been toast. In April, Apple replaced the logic board. Since the repair, whenever the power cable comes loose, the MBP shuts off as ...
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