Hot answers tagged

19 votes

Extreme energy usage by Spotlight

In my case, the Spotlight process seemed to have something to do with the iOS Simulator, which I had left open. Closing the iOS simulator resolved the issue immediately.
user avatar
15 votes
Accepted

How to resolve my mac dying at 75% battery?

Typical life expectancy ("Maximum cycle count") is 1,000 cycles. From Apple's webpages: "Your battery is designed to retain up to 80% of its original charge capacity at its maximum ...
user avatar
  • 23.7k
5 votes
Accepted

What can I safely charge with the apple 20W power plug?

Yes, you can charge any standards-compliant device that uses USB-C for charging/powering. Your experience with the wireless speaker demonstrates that the speaker itself was defective and/or not ...
user avatar
  • 66.8k
4 votes
Accepted

Battery Time Remaining not displayed anymore after update to Big Sur on 2014 Macbook Pro

Catalina doesn't display this information. Apple removed the time display as of Sierra (10.12). Only the percentage is available. https://osxdaily.com/2016/12/13/macos-sierra-10-12-2-update-available/...
user avatar
  • 4,033
4 votes
Accepted

Can MacBooks run without a battery?

MacBook Pro Mid 2015 cannot be run without battery at all.
user avatar
  • 447
4 votes

Temperature Ranges for MBP Battery. Any Information?

Yes, that is normal. In general, you do not need worry about temperatures of components of your Mac - unless you experiencing some form of crash or problem that stops you from doing the job with the ...
user avatar
  • 66.8k
4 votes
Accepted

-79 shutdown code

I would keep a safe backup and carry on. Hardware problems rarely get better and if you use this computer as a tool to make money, it’s usually easy to weigh repair cost vs replace cost based on your ...
user avatar
  • 221k
4 votes
Accepted

Running a Macbook Pro 2017 constantly plugged in

Your battery will not overcharge by leaving it constantly plugged in. This is not new technology - the 2015 MacBook Pro also does not overcharge. No matter how you treat your battery, there's also a ...
user avatar
  • 66.8k
3 votes

How to resolve my mac dying at 75% battery?

There is a Battery Recall Program for some MacBook Pro 15" Mid 2015. You can check if your device is eligible on https://support.apple.com/15-inch-macbook-pro-battery-recall
user avatar
3 votes
Accepted

Did unibody Macbook Pros have a backup battery (CMOS / PRAM)?

I don't know the precise details on this, per model, but the general rule of thumb is if the main battery is removable on a Macbook [Pro] then it has either a "CMOS" battery or a super ...
user avatar
  • 100k
3 votes

MacBook Air Battery capacity down to 93%! Should I worry?

The battery is already more than 2.5 years old from the manufacture date and even though the machine was used occasionally as you mention in the question, the battery will still degrade over time - ...
user avatar
3 votes

Care and feeding of the 1st gen Apple Pencil and its battery

There is an easier way to "turn off" the Apple Pencil, for both the 1st gen. and 2nd gen. You do not have to unpair the Pencil. Your Apple Pencil is working normally. Check "Settings&...
user avatar
3 votes

Is it normal for MacBook M1 battery to lose charge when connected to power?

If the power adaptor cannot cover the load then the difference is taken from the battery. Once the load is reduced then the battery gets recharged. Seen that on my macbook pro and it also depends on ...
user avatar
  • 4,334
3 votes
Accepted

Why are the "Battery| Battery" and "Battery | Power" settings disabled in System Preferences?

I think you're witnessing a bug where a password is required to unlock the settings, but the padlock is not shown. I would suggest opening up System Preferences > Security & Privacy and unlock ...
user avatar
  • 66.8k
3 votes
Accepted

Apple battery issue or something else?

As lithium-ion batteries age and their cycle count increases, their maximum storage capacity decreases due to the deposition of electrolytic contaminants and microscopic mechanical breakdown. A Li-ion'...
user avatar
  • 4,137
3 votes

Battery turned off even if it has life

From my answer to Apple battery issue or something else? : As lithium-ion batteries age and their cycle count increases, their maximum storage capacity decreases and their internal resistance ...
user avatar
  • 4,137
3 votes
Accepted

Prevent MacBook from lowering the CPU speed with a damaged battery

Many Mac laptop models throttle the CPU when the battery is not capable of supplying enough power (or if it absent or faulty). It is not possible to overcome this. Otherwise the Mac would (sometimes) ...
user avatar
  • 23.7k
3 votes

M1 Max (macOS 12.1): Battery discharging whilst connected to power - should I be concerned about this? It's NEVER unplugged

Short answer: No, you shouldn't be worried about it as it is because of the Battery Optimization that knows how to handle your charging i.e. when to charge/discharge your mac. I kept my new mac ...
user avatar
3 votes

How to use Optimized Battery Charging efficiently on M1 MBP?

There's no need to worry about optimized battery charging - it is handled automatically. When Optimized Battery Charging does not activate - that is OK. It means that your computer is charged to 100%. ...
user avatar
  • 66.8k
3 votes
Accepted

Can I use a CR2025 battery instead of CR2032 for my AirTag?

As long as the two battery contacts inside the AirTag still make good contact with the two sides of a CR2025 battery, the only negative effect of using a CR2025 battery would probably be that it would ...
user avatar
3 votes

Do wireless chargers shorten battery life from the heat they generate?

In short: no. Longer: the following shows that even under the assumption that the different charging method raises temperature of the battery from 25 deg C to 35 deg C, the addition in degradation is ...
user avatar
2 votes
Accepted

Event based on battery charge level

Well, this question is old but I ran into a similar situation and wanted to run a shortcut (with "Siri Shortcuts") on macOS 12 on certain battery levels. Instead of a background service I ...
user avatar
  • 136
2 votes

Can I manually limit the %CPU used by a process?

Use cpulimit brew install cpulimit and use as cpulimit -l (Number of threads x 100) -p (PID) cpulimit -l 200 -p 947 where 200 means two threads.
user avatar
  • 21
2 votes

Can MacBooks run without a battery?

I can confirm that a Macbook Pro Retina 2015 (15") WILL NOT boot correctly without a battery installed. I was rebuilding a system that had damaged batteries. Once I pulled the old battery pack ...
user avatar
  • 121
2 votes
Accepted

Do I need to be on the latest version of macOS for Apple Store repair?

No, they should not require you to update. However, even if they do (such as if they damage the machine and have to wipe it for some unforeseen reason) a backup can still be restored to Mojave. There ...
user avatar
  • 4,670
2 votes

Does using a lower wattage power adapter for a MacBook increase its battery health?

A low-power charger may not have sufficient power to charge your laptop while you are using it. Even though it's plugged in, the charge level may still go down, or stay at the same level. Or it might ...
user avatar
  • 23.7k
2 votes

Should I worry that my battery Cycle Count is 1215?

All laptop batteries age, and wither, and die, and it's this that affects the continued viability of the computer. You've had that one for over 5 years, and it is only holding 60% of its original ...
user avatar
  • 23.7k
2 votes

How to resolve my mac dying at 75% battery?

Distinguish your battery cells actually holding that amount of charge from the battery controller IC's estimate of charge, which appears to be off. Due to the very flat discharge curve of LIon cells, ...
user avatar
2 votes

Late 2013 Macbook Pro takes full days to charge ; battery drops when unplugging charger?

Logically, there are three possibilities: a) the charger is faulty b) the power management unit is faulty c) the battery is faulty The charger is the easiest to test: see if you can find another ...
user avatar
  • 23.7k

Only top scored, non community-wiki answers of a minimum length are eligible