Mac notebook computers come with a USB-C power adapter and charge cable. You can learn which power adapter and cable come with your Mac notebook computer, and find troubleshooting tips below. If you're having an issue with a non-Apple power adapter, try using the Apple power adapter and cable that came with your Mac notebook instead.
If your Mac notebook with USB-C doesn't charge
If your USB-C power adapter isn't charging your MacBook, MacBook Air, or MacBook Pro, first try unplugging the power adapter from the power outlet, waiting a few seconds, and plugging it back in. If that doesn't help, check these things.
Check power
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Make sure the USB-C power adapter that came with your Mac notebook is connected to a known working power outlet. Try plugging in a lamp or other appliance to make sure the outlet has power. If you've plugged the power adapter into a power strip, try plugging it directly into the wall outlet.
If the power adapter shuts off, interference might be affecting the power outlet you're using. If your power adapter works for a while, but then stops charging, temporarily unplug it from the power outlet. Wait 30 seconds, then plug the power adapter back in.
If your Mac notebook starts charging after you plug the power adapter back in, this might indicate an issue with line noise (disruption caused by stray electromagnetic signals) from your power outlet. The power adapter automatically shuts off when its built-in voltage protection feature senses line noise from an outlet.
Some possible sources of line noise include lights with ballasts, refrigerators, or mini-refrigerators that are on the same electrical circuit as the outlet you're using. Plugging the power adapter into an uninterruptible power supply (UPS) or an outlet that's on a different circuit can help.
If your power adapter continues to turn itself off when connected to a known good outlet, take your adapter to an Apple Authorized Service Provider or Apple Retail Store for further evaluation.
Your power adapter comes with a removable AC plug that has the blades you insert into an electrical outlet. If your Mac notebook doesn't charge when using the AC plug with the power adapter, try it with another Apple AC plug, or try using an Apple Power Adapter Extension Cable (sold separately).
Check cabling
Your Mac notebook comes with a USB-C cable that charges the computer. You can find out if this cable is causing your charging issue by trying another USB-C cable. Remember, not all USB-C cables can charge your MacBook, MacBook Air, or MacBook Pro, so make sure the cable you try is designed for charging.
If your Mac notebook charges with one USB-C cable but not another, immediately stop using the cable that doesn't work and get your cable and power supply evaluated.
If your Mac notebook begins charging only when you wiggle or move the USB-C cable or Apple Power Adapter Extension Cable (sold separately), immediately stop using the cable and get your cable and power supply evaluated.
Check for updates
In some cases, software or firmware updates might be available for your computer that improve communication with your power adapter. If your MacBook, MacBook Air, or MacBook Pro with USB-C isn't charging as expected, check for software updates on your Mac.
If the adapter gets warm
The USB-C power adapter can become warm during normal use, so be sure to use it in a well ventilated area. Always plug the power adapter directly into a power outlet using the AC plug, or place it on a table or other well ventilated area when using the Power Adapter Extension Cable (sold separately).
Avoid placing your adapter in a poorly ventilated area, like on a couch, thick carpeting, bedding, or a pillow. Avoid covering the adapter with a blanket or other insulation.
The power adapter might turn itself off if it gets too warm. If this happens, disconnect the USB-C cable from your Mac notebook, then let the power adapter cool down before handling it.
If you see a spark
When you plug in the USB-C power adapter, it might spark where the blades of the plug enter the outlet. This is generally normal and can happen when you plug any electrical appliance into a power outlet.
If you see any of the following when you plug in your adapter, or if you have other concerns about sparking, you should contact Apple:
- Contact Apple if a spark comes from somewhere other than the blades of the plug.
- Contact Apple if you see any damage or discoloration on the adapter.
Get your Mac notebook and power supply evaluated
Whether your Mac notebook with USB-C is in or out of warranty, you can bring it to an Apple Authorized Service Provider or Apple Retail Store for evaluation. Be sure to bring your Mac, your USB-C power adapter, and any USB-C cables you use for charging.
With so many mobile phones and laptops in a family these days, it is not really possible to get a power outlet for every device. If you find that there is a shortage of plugs, one easy way is to connect your smart phone to your laptop and get it charged – even when the latptop lid is closed. While every laptop that’s “awake” can charge mobile phone, even if it isn’t plugged into the power outlet, it is different when the laptop lid is closed and the laptop enters Sleep mode.
Do you know that you can charge your mobile phone in sleep mode even when the laptop lid is closed? In this post we will learn about how to charge your phone even with the laptop lid is closed and take a look at how to charge your phone faster.
A laptop charges your mobile phone when it is turned ON and as soon as you close the lid or put it to sleep, the charging stops. You probably don’t know, but you can still keep charging your phone even when your laptop lid is closed.
Charge Phone in Sleep Mode with Laptop lid closed
To charge a mobile phone in sleep mode with laptop lid closed, without a charger, you have to open Device Manager and uncheck Allow the computer to turn off this device to save power option. Let us see how to do it in detail.
First, open the Device Manager of your laptop. Right-click the Start Button in Windows 0 and select Device Manager. Else type ‘device manager’ in the search box and hit Enter.
Go to the Universal Serial Bus Controller to see a list of USB Root Hub.
Right click on each one of them and select Properties > Power Management tab.
Uncheck the Allow the computer to turn off this device to save power box.
This should work.
If this method doesn’t help, you probably have to check the USB support in your laptop’s BIOS system. In some laptops USB Wake Support is disabled by default, and you need to enable it to charge your phone in sleep mode with the laptop lid closed
Tips on charging the phone faster
Though plugging your phone into a laptop or a desktop is a very slow way to charge your Smartphone battery, you can still get it a bit faster by following these tips:
- Any device, including mobile phones and tablets, charge super fast when turned off. Switch off your phone before you put it on charging and see the difference.
- If not, make sure that the internet is not enabled in your phone, if you actually want to charge it faster. You can also put it on flight mode to get fast charging.
- A PC’s USB ports are specified at different power capacities. While USB 1.0 AND 2.0 are specified at 2.5W, it is 4.5W for USB 3.0. So always used USB 3.0 if you want to charge your phone faster.
It is always very important to keep your devices properly charged for a better battery life. Take a look at how to optimize a laptop battery.
TIP: Download this tool to quickly find & fix Windows errors automatically
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