How to Tell If My iPad Is Charged

Connect your iPad to a wall charger or high-speed USB port.
Look at the screen without touching anything. You should see a green bar that shows your iPad's charging status. When the green bar is 100 percent full, your iPad is fully charged.
Press the home button and look in the top right corner of your iPad's screen. You will a see a number followed by the '%' sign. This is the amount of charge your iPad has. When you the charge is at '100%' your iPad is fully charged.
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How to Troubleshoot Apple Laptops

Press the button on the MacBook battery, or on the side of the computer (for models with an integrated battery), to see if the battery is charged. Several LED lights indicate a charged battery; a single blinking light means the battery is empty.
Disconnect the MagSafe power adapter from the MacBook and the wall socket for one minute. Reconnect it first to the wall, then to the MacBook. If the LED on the MagSafe cable turns on, the laptop is now charging. Press the power button to see if the MacBook starts up.
Hold down the control, command, and power buttons for three seconds to attempt to restart your MacBook. You will hear a startup chime if this is successful.
Hold down command, option, and the 'P' and 'R' keys until you hear a startup chime. This resets the 'parameter RAM' or 'PRAM,' which may prevent your computer from starting up.
Reset the system management controller. There are two methods of doing this, depending on your MacBook. Reset MacBooks with a removable battery by disconnecting the power cord and removing the battery, then holding the power button for five seconds. In newer MacBooks with an integrated battery, hold the left-side shift, control, and option keys while pressing the power button. Reconnect the power cable and press the power button to start the MacBook.
Remove any additional RAM you may have installed and determine whether you can start up your MacBook without it. The method of removing RAM varies by MacBook; consult your MacBook's manual for instructions. If you are uncomfortable removing the RAM from your MacBook, skip to the next step.
Schedule a service appointment at an Apple Store or authorized reseller if these steps do not restore your MacBook. They will work through these steps as well, and set up a repair for your MacBook if it needs servicing.
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How to Charge an Apple Laptop (3 Steps)

Plug the A/C adapter into a power outlet.
Connect the charger to the Apple laptop casing. The charging connector will magnetically seat itself when placed near the charging slot.
Wait for the orange light to turn green. The laptop will then be fully charged.
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How to Optimize Battery Life on a MacBook (7 Steps)

Charge your MacBook by connecting it to a power adapter until the onscreen indicator bar on your Desktop reaches 100 percent and the light on your adapter cord is green.
Continue charging your MacBook for at least two hours after you reach a full charge. You can use your MacBook during the two-hour period, but don't unplug it.
Unplug your MacBook, allowing it to run using the battery power. You will need to let the battery run completely down, so it is a good idea to save your work.
Continue using your MacBook---or leave it on---until the battery gets low and you see the warning dialog box pop up. Do not plug in your MacBook.
Allow your computer to automatically go to sleep and subsequently turn itself off.
Leave your computer turned off for at least five hours.
Reconnect your MacBook to the power adapter and charge it until it is full.
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How to Calibrate Your MacBook Battery (4 Steps)

Plug in your MacBook and give it a full charge. You can tell if your MacBook is fully charged when the green LED light on your power adapter changes from amber to green. When the LED is Green, your battery is at full charge. Leave the MacBook plugged in and charging for an extra two hours past the point when the LED turns Green.
Run your battery down and discharge it completely. Disconnect the power adapter and use your Mac until the battery is fully discharged. You will see a low battery warning on your screen, but keep using your MacBook until the battery completely runs out and the machine puts itself to sleep.
Close the laptop lid and let your Mac sleep, without power connected, for at least 5 hours. Letting your MacBook rest overnight is a good rule of thumb.
After letting the computer rest for 5 hours or longer, plug in your MacBook to the power supply and leave it connected until the computer is fully charged. It’s OK to use your MacBook while the battery charges. When the charge is completed, you’ve successfully completed recalibration of your MacBook battery.
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