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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2018 MacBook Pro experiencing very poor battery life (<4 hours) with light usage

I bought a new 2018 15'' MacBook Pro with Touch Bar a couple weeks ago. So far its battery life has been abysmal, reaching 0% after less than 4 hours of very light usage (only web browsing). I ...
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1answer
794 views

Managing PreventUserIdleSystemSleep on MacBook

I have had some issues with the battery on my MacBook draining prematurely with the lid shut, and I think I have found a clue. Following advice found elsewhere on the Web, when I issue: pmset -g ...
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2answers
635 views

MacBook Pro 2018 & LG UltraFine 5K Display Power Comsumption

I'm looking to purchase a new MacBook Pro and a monitor, and I'm currently looking at the 15" MacBook Pro (2018) with the LG UltraFine 5K Display. I'm fully aware that the MacBook Pro and the LG ...
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1answer
17 views

Can i charge mag safe 1 laptop via external portable battery ?

Ive got a mid 2012 15" Macbook Pro with which has a magsafe 1 power port. Is it possible to charge this model of laptop with an external battery like the 20000 Mah units you can get to charge phones ...
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1answer
9k views

Is it good to keep my MacBook Pro on charge? [duplicate]

I recently got the new MacBook Pro 2018 and would like to look after the battery better as I need it for university and would keep it for at least 3 years. I understand that they are lithium-ion ...
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2answers
95 views

iPhone 5 (iOS 10.3.3) getting pretty hot within brief usage of 5-10 minutes

I've been using an iPhone 5 for about a year and have never faced this issue. Due to some reason which I am unaware of, whenever I use it in an air-conditioned room, it gets pretty hot from both back ...
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1answer
36 views

Mac runs as long as plugged in, but unpredictably shuts off otherwise - clock resets

I have a MacBook Pro, as shown in the image below. Also, as I think it might use a lot of power, I run Ubuntu on a vagrant machine to test website apps. Recently (last 2-3 months), the battery would ...
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2answers
40 views

Why is my ipad being charged at low speed and sometimes discharged even when plugged in?

When I plug in my tablet and use it normally at normal brightness or even not using at all, its battery is often discharging (at 20-2000mA) and when it charges the speed is very low (only 300-500mA) ...
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2answers
2k views

Does turning off cellular data significantly improve battery life?

I almost always turn off cellular data when I lock the screen. I only turn it on when I’m using internet. But it’s annoying to do that almost every time. Does it worth the trouble?
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2answers
7k views

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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1answer
71 views

Scheduled startup/wake while on battery power

I would like to automatically turn my Macbook Pro on at a certain time in the future (preferably with Terminal). However, I found out that this does not work when the computer is not connected to a ...
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19 views

Customise charging for MacBook Pro? [duplicate]

Is there any way to customise the charging schedule for my MacBook Pro (2017)? Essentially, I have long periods when my machine is plugged into the mains due to running intensive models, unattended, ...
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3k views

How to disconnect MacBook Pro 15 2017 battery?

I'm struggling to figure out how to "unplug" or disconnect the battery of my retina MacBook Pro 15' 2017 from its logic board, to reset the SMC. What cable(s) do I need to disconnect exactly? 🤔 ...
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2answers
1k views

MacBook Pro 15 2017 Battery Condition: Replace Now

My 3 months old Retina MacBook Pro 15 2017 is telling me to replace the battery The system report metrics seem normal I've tried all four USB-C ports, done an SMC and NVRAM reset, still not charging....
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1answer
210 views

iPhone 6 battery drain fast

My mom's iPhone battery is suddenly draining very fast (its losing 1% in a 10 second time period when the screen is on), so I checked the battery health in the Settings app, and it says it has 51% ...
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2answers
97 views

Does my MacBook battery have an issue?

It's been nearly 1yr & 6 months since I bought my MacBook 13" 2015 retina. Now, the battery only holds 57% of its original capacity. Number of charge cycles is 234. This battery can hold only 2 - ...
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1answer
1k views

rMBP high battery drain, doesn't seem to sleep after HS upgrade

I have a 2015 A1502 13" Retina MBP, originally running Sierra. Since upgrading it to High Sierra, it doesn't seem to sleep properly. Before, I could leave it in sleep mode on its battery for over a ...
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1answer
29 views

What Is Optimal Battery Usage & Lost for iPad?

I am using my iPad Pro about 2.5 years. If %8 is lost from iPad Battery in 2.5 years ( March 2016) is this a sign of a bad battery?
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1answer
4k views

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 input ...
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1answer
249 views

MacBook Pro Trackpad popped

I have an early 2011 MacBook Pro - admittedly this was ageing but still working OK, although it was warning about the battery. I last used it a few days ago, and just noticed the lid was open which ...
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1answer
33 views

iPhone 7 battery quickly discharges after using Philips dual USB car charger

I drove a car for about 3 hours and during the ride my iPhone 7 was connected to the Philips dual USB car charger. All this time screen was on and also was using Waze app. In addition to this another ...
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1answer
567 views

Does IFTTT app drain battery faster in iPhone (and Apple Watch)?

The IFTTT app sounds interesting with endless possibilities. I have just installed it but skeptical about using it because of the possibility of battery drain. The app has to keep track of every event ...
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2answers
999 views

Should I care too much about battery cycles? [duplicate]

I bought a MacBook Pro 13 inch 2017 two days ago and it’s been already 4 cycles Is it something that I have to care about?
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743 views

AirPods battery level with `ioreg`

I can query the battery level of my bluetooth devices with ioreg with ioreg -r -l -n devicename | grep '"BatteryPercent"\ =' with the following devices Keyboards: IOAppleBluetoothHIDDriver, ...
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39 views

MBP on battery suddenly powers off when charge reaches 12%

I recently installed a new battery in my early 2013 MBP 15" Retina. I put it through the recommended two complete charge/discharge cycles, and coconutBattery reports that the design capacity is 8460 ...
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4answers
3k views

Aura Pro X SSD Macbook Pro Retina 2015 issues

A few weeks ago I upgraded my Macbook Pro Retina 13" Early 2015's SSD to a larger one from OWC: the Aura Pro X. I was pretty happy with the purchase as I was getting 40% higher writing speeds and ...
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1answer
7k views

Is it safe to charge iPhone while it is powered off?

When I am in a rush I often plug my phone into it's charger and then turn it off (if I do it vise-versa it will turn on when I plug it in). I have found it charges a estimated 1.5x faster then while ...
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1answer
4k views

Upload Photos to iCloud Photo Library on iPhone only when plugged in?

I'm running into issues with my battery draining quickly (iPhone 6s with iOS 11) and it appears that Photos is the culprit (based on % battery use) presumably from uploading photos to iCloud Photo ...
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1answer
797 views

See which app drained my Macbook's battery

Sometimes I close my laptop, assuming that there is nothing running that prevents sleep, put it in my bag, and then find the next day that it didn't sleep - instead it ran out of battery and shut down....
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1k views

Macbook Pro Battery Condition: Replace Now [duplicate]

My Macbook Pro ( Retina 13 inch early 2015), all of a sudden, started showing "Condition: Replace Now" on battery. Everything was working fine till last night; when I turned on the laptop in the ...
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2answers
4k views

Macbook Pro Battery 0% and wrong date

Model: MacBook Pro Retina, 13-inch, Early 2015 While I was working, I didn't realize that the battery was low and as a result, my MacBook Pro shut down when the battery had no power. So, then I ...
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1answer
539 views

Macbook Air charger not working

The circumstances of my Macbook Air (late 2010 model) and its inability to charge the battery are a bit unique from the other cases I've read about on forums: My battery would not charge, and the ...
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2answers
111 views

iPhone 4s replaced battery, still drains quickly

I replaced the battery in my mom's old iPhone 4s. Battery is direct from iFixit. I've replaced iPhone batteries before and everything seemed to go right. Problem: I charge it fully before bed, and ...
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3answers
12k views

I think my MacBook Pro battery was replaced by Apple's service team. How do I check that?

I handed my MacBook Pro (15" Touch bar) to the service centre in order to have the keyboard replaced. Now, when I check the battery cycle count, it shows "1". Before it was at "82". Also, I'm ...
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2answers
62 views

Has my iPhone been bricked?

As of about 4 hours ago, my iPhone has refused to charge and the battery has drained, every time it gets enough power to turn on it displays the lock screen and "9%" battery before promptly dying ...
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2answers
393 views

60w charger only delivering 5.5w to battery?

I've just bought and installed a replacement battery for my 15" late 2012 MBP (non retina). The battery is not OEM but from iFixit as they are in my opinion the next best thing. I was interested to ...
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1answer
1k views

Understanding Mac Battery Information

In System Information, we can obtain information about the battery, e.g.: Battery Information: Model Information: Serial Number: D866192Q1NFFWLKE1 Manufacturer: SMP Device Name: ...
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2answers
473 views

Battery service and insanely low maximum charge

Recently my Macbook Pro Retina Late 2013 has started to shut down unexpectedly while running on battery. I thought it was because of my CPU was too hot but it was not the case. When checking it ...
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1answer
182 views

On iPhone 5s, can the battery itself be the cause of fast draining, even after a brand new U2 chip is installed?

My battery was draining very fast even when UNUSED and in LOW POWER MODE. This was happening even in AIRPLANE mode (i.e. overnight, unused, in Airplane and Low Power Modes both enabled). I got the ...
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1answer
104 views

Force MacBook to drain the battery while connected to charger

I leave my MacBook Pro on my desk nearly all the time, connected to the charger with the lid closed, connected to an external display. I've heard this is bad for the battery health, and everyone in ...
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1answer
137 views

Change what percentage/time remaining causes the battery icon on Mac to go red

I'm dead broke. So, I have a cheap battery for my dead-broke-esque 2008 MacBook. It only lasts about 2 hours on a full charge. However, it's a little goofy at times. Not in a dangerous way, just that ...
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1answer
164 views

iPhone 6 GPS problem on Pokemon Go

Recently when I'm playing Pokemon Go I get a message saying I don't have a GPS signal. Some people told me it could happen because the battery is pushing on the GPS component in the iPhone 6 model. ...
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1answer
892 views

Are Macbook Pros with a rusted / corroded MagSafe port safe to operate?

So I have MacBook Pro 13" 2015 and when I connect the MagSafe power connector to it, it seems like it’s more difficult to charge. So I check the MagSafe port and want to clean it I think. When I ...
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2answers
1k views

Does the MacBook Pro 15'' 8,2 Early 2011 accept both A1321 and A1382 batteries?

I have a MacBook Pro 15'' A1286, model 8,2 Early 2011 (with i7 @ 2,3 GHz). Inside is a A1382 battery telling that it must be replaced. I have in stock a A1321 battery which is in good condition. ...
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1answer
6k views

Are these normal temperatures?

I just got a new MacBook Pro 2017 128GB no-touchbar, bought it in the refurb. I'm doing a bit of Photoshop ( I know it's not the best MBP, but I really need it right now for work ) and I have Safari (...
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1answer
885 views

iPhone 7 battery discharges very fast after using Waze and charging 3 hours from the car

I charged my iPhone 7 (iOS 11.3.1) from car for about 3-4 hours during the ride and Waze app was on all the time. Next day I noticed that phone discharges really fast. Power saving mode helps, but ...
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0answers
2k views

Mid-2017 13" Touch Bar Macbook Pro Won't Turn On or Charge

I am trying to diagnose a 13" mid-2017 touch bar MacBook Pro (Model A1706 EMC 3163) that will not charge or turn on. This issue showed up a few days ago when the Apple-provided charger appeared to ...
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1answer
584 views

Does “Not Connected” state of Bluetooth/Wi-Fi drain my iPhone battery?

As we all know in iOS 11 there are three states for Bluetooth and Wi-Fi buttons in Control Centre: Off, Not Connected, and On. I'd like to know whether Not Connected state drains my iPhone battery or ...
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1answer
83 views

Macbook Air 2017 won't charge

I have the MacBook Air 2017 and until today it was working fine. Now, when I plug in the Mag Safe connector the light doesn't turn on nor does the computer detect that I've plugged the cable in. I'...
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1answer
2k views

Ridiculously slow MacBook Pro 15'' 2011 with low battery and El Capitan [duplicate]

Problem solved: see "Update 2" section. I have a MacBook Pro 15'', A1286, Early 2011 which was running OS X Lion and became extremely slow few weeks after an upgrade to El Capitan. The upgrade itself ...