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8

Your battery is shot. A battery's life is determined more by age than the number of cycles. Yes, number of cycles do play a part, but the biggest culprit is age. In short, you have a 4 year old battery. A 4 year old battery that was never used is going to perform about as well as a 4 year old battery with 500 cycles. MATH FINDS TOP CULPRIT AS ...


4

Booting Ubuntu on a dual boot partition has a similar battery life to OS X, perhaps slightly shorter, due to less efficient optimization for the MacBook Pro's hardware. In a virtual machine, despite lots of "clever" optimizations and CPU hardware virtualization features, there are two complete operating systems, with two kernels, and two display managers* ...


3

The reason is because when you connect an external display, even if you close the laptop and use it in clamshell mode, the laptop automatically switches from an integrated video card (this uses much less power) to a more powerful, discrete video card (this uses a lot of power). This is also true regarding Intel Iris Graphics, which has different power ...


3

There's been much debate and discussion around this topic. I believe it was beneficial for iOS back in the v3 and v4 days but now it's not. Craig Federighi even came out recently saying it's not necessary and it doesn't increase the battery life. Apple has built-in their memory management the proper time to suspend and/or kill an app when necesssary. The ...


2

Yes, running Ubuntu natively (dual booting) may be a better way, but you will lose all "pros" of your MacBook Pro 2015 (Mac OS X). There is another way of "using Ubuntu," which is Docker. I bet you have heard of it, but you may not know that the latest Docker beta uses a native virtualization mechanism, and it does not need VirtualBox, or any other virtual ...


2

The 12.9" iPad Pro can use power faster than the 12W power adapter can supply it. That's why it can run out of power when running for example a game, even though it is connected to the charger. To avoid that, use the 29W Apple power adapter instead. The 29W adapter is not supplied with the iPad Pro, but must be bought seperately.


2

Default Warning The battery indicator in the menu bar will turn red when the battery is low. There will also be a critical low power warning when the computer needs to emergency shut down. See Apple's About Mac notebook batteries page, in particular this section: The low battery warning doesn't display If you don't receive a warning when your ...


1

You can keep your Mac on forever when you need to (including while AirPlaying) without digging into settings if you download the Mac app Caffeine. With Caffeine, a coffee mug will appear on your Mac's menu bar. Just click it to prevent your Mac from sleeping indefinitely, and click it again to allow it to sleep. This is a very simple method of keeping your ...


1

Try something like this: https://itunes.apple.com/us/app/amphetamine/id937984704?mt=12 With just a click you can keep the display on for a set or indefinite amount of time.


1

In one circumstance, a force quit can have a benefit to iOS that outweighs the cost of more processing needed to clean up the process, restart it, and purge any files that are cached/open. The negative to doing this is that apps don't run in the background - so once you switch to a new app or the springboard / list of icons / lock screen - iOS has already ...


1

You battery is dying! 4 years is usually average when a battery starts dying. I would personally take it to the Apple store, have them look at it. They will tell you if it needs replacing. I would just get it replaced at the Apple store, the price difference is not to much and you know you're getting a good battery. Replace it ASAP, as there is a chance ...


1

If you can at least start the Mac up and make the battery lights flash, it's lint. Here's how you clean lint from a port: Get a toothpick. Stick it in the port. Carefully rub the inside of the port. Pull out the toothpick. Repeat.


1

Apple makes 3 different chargers for their MacBooks that you need to be concerned about: 45-Watt -- For MacBook Airs. 60-Watt -- For 13" MacBook Pros. 85-Watt -- For 15" and 17" MacBook Pros. You can use a higher-wattage charger than you MacBook requires, but not a lower-wattage one. Yours was an 85-watt charger. If your friend's charger was a 60-watt, ...


1

Unfortunately, there is no direct way to force OS X to use battery-power mode (here, here and here). OS X uses Intel Speedstep which changes the P-state of the processor depending on the computer's power status (AC/battery). AFAIK, the only thing you can do is set your AC mode power management settings to the same as battery mode. Using pmset, you can see ...



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