Is your iPhone or Android phone running low on battery? Want to charge your phone using your laptop without turning on the laptop? In this guide, we will explain how to charge your phone using your laptop even when the laptop is turned off.
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We all know that when the laptop is turned on (running), all USB ports get power, and we can charge phones by connecting them to the laptop. But what if you want to charge your phone when the laptop is turned off? That is, what if you need to charge your iPhone or Android phone when your laptop is shut down or in hibernating?
Charging iPhone or Android phone using laptop when laptop is shut down
It’s possible to charge your phone or any other USB device using your laptop even when your laptop is shut down provided that your laptop supports it. That is, not all laptops send power to USB ports when they are turned off. The feature drains out the battery if a device is left connected to the laptop even after turning off the laptop.
If your laptop supports the feature, one or more USB ports on the laptop will continue to get power even after the laptop is turned off. There might be a mark next the USB port to indicate that the USB port gets power even when the laptop is shut down. For instance, my ThinkPad 450s has a battery icon next to one of the USB ports on the left-side to indicate that it gets power even when the laptop is not running.
If none of the USB ports on the laptop gets power when it’s turned off, please check your BIOS setting as usually there is a setting in the BIOS to turn this feature on and off. You can also check your laptop’s user manual or contact the manufacturer to check if your laptop sends power to its USB ports when it’s not running.
To charge your smartphone when the laptop is in sleep mode, please refer to our how to charge your phone when laptop is in sleep mode article.
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:
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.
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I always thought you couldn't charge an iPhone from a closed macbook without opening it first, and then closing it after plugging the iPhone in. However today my phone was completely dead and I was on a train unable to take my laptop out and open it even a little bit.
the phone charged while it was dead, and when it turned on it was on 2%, however it didn't stay charging, instead 5 minutes later it died again, and starting charging while dead again.
Is there a way to keep the phone charging after it turns on from dead? (without opening the macbook, it seems like it's the phones fault it stops charging as that's the only thing that doesn't change, and it's jailbroken so I can install tweaks)
Jonathan.Jonathan.
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3 Answers
You would want to enable closed clamshell mode (search Apple.com/support) for the details on what is required on which models:
At this point, you'll get the normal USB charging or the enhanced charge if the hardware detects your iOS device as benefitting from the capabilities of the hardware to charge at a higher rate than 500mA.
If you cannot run in closed clamshell mode, set the sleep to be long enough to get a charge and prevent the lid from closing completely. Setting up power nap will also allow brief moments of charge, but that isn't intended to get a realistic charge over USB.
bmike♦bmike
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A solution that I can think of is to turn of sleep before you close the lid of your MacBook. This will keep your laptop running until the battery for it dies.One tool for doing this is the InsomniaX.
Step by step:
Note: InsomniaX has a CPU Safety function that should keep the computer 'cool'. Still it is expected that the computer could get much warmer than average. You should test to see if your hardware get to hot if you put it in a bag. As an example; Automatic sync of your iPhone could make your computer heat up when you connect it to USB.
Joachim BratteliJoachim Bratteli
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phone will continue to charge ?
schpetschpet
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There are a lot of questions about cell phone batteries. Should you leave your smartphones plugged in overnight? Is it bad for the phone? Bad for your safety? What's the right thing to do?
In fact, how much should you charge your phone? When's the right time to plug in? Should it go down to 0 percent every time? Up to 100 percent? How do you get the longest life out of the battery inside a smartphone? Does it really matter if you're only going to keep the handset around for a couple of years before an upgrade?
The debate goes well beyond the worry of moderate harm to a device, as some people have fears of 'overloading' a smartphone battery. That worry seems relatively justified since it was only a few years ago that Samsung's Galaxy Note 7s were bursting into flame due to battery issues. But as we've explained before, unless a device has some serious manufacturing defects like that phone did, the fire-in-your-pocket (or on the nightstand) aspect is unlikely.
The problem is, some of the research and opinions out there are diametrically opposed. We've narrowed down the right and wrong things to do as best we can. We present to you the myths and truths of iPhone or Android phone charging, in particular when plugging in overnight.
Charging My iPhone Overnight Will Overload the Battery: FALSE
The one thing all the experts agree upon is that smartphones are smart enough that they do not let an overload happen. Extra protection chips inside make sure that can't happen in a tablet or smartphone or even a laptop. Once the internal Lithium-ion battery hits 100 percent of its capacity, charging stops. That usually happens within an hour or two, tops.
If you leave the smartphone plugged in overnight, it's going to use a bit of energy constantly trickling new juice to the battery every time it falls to 99 percent. That is eating into your phone's lifespan (see below).
The best thing to do: Don't worry about this too much. Plug the phone in (or place on the wireless charger) when you go to sleep; if you wake up sometime in the night, unplug it/move it to prevent constant trickle-charging. If you don't wake much, plug your phone into a smart plug that's on a schedule so it turns off.
Potential problems that could be encountered while charging overnight:
1) It is hot in here? The trickle-charge can cause some heating up. Many experts recommend taking a phone fully out of the case to charge overnight. At the very least, do NOT stack a bunch of crap like books or other devices on top of a charging device. And for the love of Jobs, don't put it under your pillow. Do any of the above and you can expect the phone to get hot—not necessarily enough for spontaneous combustion, but at least enough to damage the battery (see below).
(spyarm/shutterstock)
If you are afraid of fire, some in the UK recommend leaving the charging device on a dish or saucer while plugged in, or putting it on something metal that is more likely to dissipate heat, like a heatsink does on the chips inside a PC.That's not much of an option if you use a wireless charging pad, so don't sweat it.
2)Bad Cables. If you're using a knock-off cable that isn't from the manufacturer, or at least 'certified' in some way (iPhone Lightning cables should be MFi certified, for example), it could be a problem. The cord and connectors may not be up to the specifications needed for the phone or tablet. Don't skimp by buying chintzy cables.
I Should Freeze My Phone to Prevent Battery Problems: FALSE
Lithium-ion batteries hate two things: extreme cold and extreme heat. With cold, repeatedly charging a smartphone in sub-freezing temps can create a permanent 'plating of metallic Lithium' on the battery anode, according to BatteryUniversity. You can't fix that problem; doing it too much is only going kill the battery faster.
(Photo by sankai from iStock)
The battery is not alone in hating heat: all the internals of any smartphone dislike warmth. It's a computer in there, and computers and hot air are mortal enemies going back decades. Leave your black iPhone sitting in the sun as you laze by the pool someday, and don't be surprised when it throws a warning at you that it needs to cool off. In the summer, keep it off the dash of the car, preferably in the shade.
Apple specifically says charging iPhones over 35 degrees C/95 degrees F will do permanent damage to the battery; expect the same with any modern smartphone.
Best thing to NEVER do: Don't let it get too cold or hot when charging. And don't put your phone in the freezer. That's dumb.
My Battery Should Always Drop to 0 Percent: FALSE
Running a smartphone until it's dead—a full discharge—every time is not the way to go with modern Lithium-ion batteries. Don't even let it get that close to 0 percent. That wears out a Lithium-ion battery even faster than normal. Partial discharge is the way to go.
Batteries are on borrowed time from the get-go. The insides are in a state of decay that can't be helped. Over time, they're simply going to hold less and less power. If you've got an old iPhone 5 or 6 still in use and wonder why it's only got a charge for a few hours compared to the almost full day you got when it was new, that's why. The capacity diminishes over time.
The only time you would want to go out of your way to drain a smartphone battery to zero is to recalibrate the internal sensor that displays your phone's battery level. It's hardly guaranteed—in fact, many people don't think it works at all—but it's recommended by some, especially if you've got a phone that hits 10 percent (or even 20 or 30 percent) and seems to abruptly die.
Even if you do use the phone all the way to auto-shutdown, that may not mean the battery is at 0 percent. Leave the phone be for a few hours, if you believe this is worth doing. Then give it a reset (holding down the Home and sleep/wake button simultaneously) for good measure.
Best Thing to Do: Plug the phone in before it asks you to enter a low-power mode; iOS will ask you to turn that on when you hit 20 percent power. Plug it in when the phone is between 30 and 40 percent. Phones will get to 80 percent quickly if you're doing a fast charge. Pull the plug at 80 to 90, as going to full 100 percent when using a high-voltage charger can put some strain on the battery. Keep the phone battery charge between 30 and 80 percent to increase its lifespan.
Fast charging like we've seen in Android phones for a while finally arrived with the iPhone 8 and X. Before, it took an iPhone a couple of hours to go up 50 percent. Apple claims the 8 and up can increase 50 percent in only 30 minutes with the right chargers. That requires a USB-C power adapter, which in turn means owning a special USB-C-to-Lightning cable, neither of which are included with an iPhone; or using a higher voltage charger like the one from an iPad or even a MacBook.
My Battery Develops a 'Memory': FALSE
Developing a 'memory' was a problem with older nickel-cadmium (NiCad) batteries. That's where the whole 'discharge the battery entirely' thing came from. Like we said, it's not necessary on Lithium-ion batteries. Every binding of isaac character mod download no steam.
So why do Lithium-ion batteries not seem to last as long as they age? It's not about 'memory,' it's about capacity. Your smartphone battery over its lifetime degrades enough that in the same amount of time charging, a new phone could hit a full charge, while an older phone might only get to around 82 percent. BatteryUniversity calls it 'old man syndrome.'
(Jirsak/shutterstock)
Another way to look at it is that newer batteries are just hungrier to suck up all that power.
Apple claims that 'Apple Lithium-ion batteries are designed to hold at least 80 percent of their original capacity for a high number of charge cycles' but also admits that the amount differs from product to product.
Apple iPhone batteries also support 'fast charging' so they'll get to 80 percent pretty quickly. After 80, you'll see the capacity increase slowly, some of which is to prevent heat buildup, and that extends battery life. But guess what? Fast charging isn't great for Lithium-ion battery either—it makes the corrosion happen even faster.
Current iPhones come with a 5-watt (that's 5 volts at 1.1 amps) charger block which works, but of course, you can charge faster with a 10W charger, which has an output of 5 volts at 2.1amps—that's the kind of charger that comes with an iPad. If you stick to the Qi-based wireless charging, keep in mind that most support 7.5W, with wireless fast charging now available.
Best thing to do: Stop worrying about 'memory.' If you are going to charge overnight, don't fast charge. Use a slow charge. That means your charger should be lower voltage.
Phone Batteries Only Live a Couple of Years: FALSE-ish
Phone batteries measure their lifespan in 'charge cycles.' That means every time you discharge up 100 percent of the capacity, that's one cycle count—but that doesn't mean you went all the way to zero.
For example, if your phone is at 80 percent, you go down to 30 percent (that's 50 percent), and you charge it back to 80 and use that 50 percent up again.. that's one cycle. You could use 75 percent one day, 25 percent the next; that's one cycle. Expect iPhones to have a lifespan of 400 to 500 charge cycles (again, that's not necessarily 400 to 500 times the phone is actually plugged in to charge.)
If the phone's capacity has eroded enough, you may have to do that 50 percent charge-and-use a couple of times a day—and that's when the lifespan goes even faster. Here's Apple's graphic trying to explain it:
While your phone battery doesn't have a 'memory' that makes the capacity worse and worse, that limited lifespan means you may want to swap in a new battery (or batteries, as you can see in the image below).
In late 2017, Apple admitted to secretly slowing down batteries on older iPhones in the name of 'overall performance and prolonging the life of..devices.' It first applied the slowdowns to iPhone 6, iPhone 6s, and iPhone SE devices, but extended it to iPhone 7 devices, too. After an uproar, Apple offered battery replacements for these phones for $29, down from the usual $79 fee, through the end of 2018. They're now back up to $79, but that's a lot cheaper than a new iPhone.
Battery replacements are generally best done by a professional. Few new smartphones have a user-swappable battery. Those that do are from years ago, including models from LG (V20, V10, and G5), the Moto G5, and the Samsung Galaxy Note 4 from 2014. The newest one out with a removable battery is probably the Moto E4.
Why so few? Well, most Lithium-ion batteries perform effectively for around two to three years, and that's when the manufacturers would really like you to upgrade to a new phone. Or maybe it's because the average smartphone user in the US keeps a phone for around 22.7 months, according to Kantar WorldPanel, so they can always have the newest, coolest gadget on hand. Why bother making it easy to swap a battery?
The takeaway here: if you plan to swap phones every year or two, charge the stupid thing any way you want, as often as you want, and don't worry about the diminished capacity. However, if you want to stretch things out, use best practices for Lithium-Ion batteries as described above. It may help. Or, just take it in to and get a new battery installed every couple of years.
You may not remember, but there was a time when you had to plug a cable into the side of your computer if you wanted to check your email.
Today, Wi-Fi's wireless connections make physical network cables a rarity. But that's just the beginning. Technological forces are converging to make a lot of other wires in our lives look like relics. 2018 might not be the year when every cord disappears from your house, but it could begin a new big phase of uncluttering.
It'll start with the device you likely spend the most time with every day: your phone. Plenty of phones have offered wireless charging for years, but Apple's embrace of the technology this year in the iPhone 8 and iPhone X sends a strong message to leery consumers and to phone makers on the fence: Come on in, the water's fine.
Other wires that could be banished include your earbud cable, your laptop's power cord and maybe even your broadband connection to the internet. It's all part of the inexorable move to designs that are easier to install, maintain and use through untethering. That ultimate dream of a living room entertainment system with no cords is no longer so far-fetched.
'We've seen a trend over the last 10 years to remove any mechanical moving parts on the phone, to remove any compartment you can open,' IHS Markit analyst Ian Fogg said. 'At some point, we might see the removal of the data port, too, so there aren't any physical ports at all.'
To be sure, wires aren't going away completely in our lifetimes, much less in 2018. They're just too useful for transferring data and power quickly, cheaply and reliably. For instance, you'll still need a line that connects your wireless charging pad to the outlet. But on a daily basis, the technology means you can just plop your phone or even your laptop onto a charging pad instead of fiddling with cables.
Qi is key
Wireless phone charging had been a mess because of multiple standards. Nobody would want to set a phone on a charger in an office, coffee shop, hotel or car and find out it's incompatible. The industry now has mostly settled on one standard called Qi (pronounced 'chee'). For example, the day after Apple announced in September that its new iPhones would use Qi, charging station maker Powermat announced that its wireless charging spots at Starbucks coffee shops would add compatibility with Qi.
Samsung supports Qi in its Galaxy S8 and Note 8 phones. Furniture giant Ikea sells lamps with Qi wireless charging stations built in, and outside the house, the standard is in some cars from Ford, Audi, BMW, Toyota, Honda, Chrysler, Hyundai and Volkswagen.
Wireless charging exists for laptops too -- Dell's Latitude 7285, for example -- but that's a rarity at the moment. It's harder to supply enough power for a laptop, and the charging stations are more expensive: $200 in Dell's case.
Perhaps more interesting for laptop customers is a technology called WiGig that transmits data very rapidly over the air within a room. That can be handy for docking stations: When you flip open your laptop anywhere in a room, it wirelessly connects to a docking station that handles cabled connections to external hard drives, monitors, speakers and other devices.
Industry groups including the Wi-Fi Alliance and the IEEE are working on a second-generation WiGig technology, called 802.11ay, that should boost speeds and range and perhaps improve the technology for high-end virtual reality headsets that no longer are leashed to your computer. But the final version of WiGig 2.0 likely won't arrive until 2019.
Ta-ta, tangles
It's a marvel that our phones can deliver so many songs, podcasts, video chats and TV shows. But untangling your earbud wires first can be infuriating. For good or ill, several phone makers want to move us beyond that hassle by killing off the decades-old 3.5mm audio jack and steering us toward wireless Bluetooth audio connections.
Sure, you can still plug headphones into an Apple Lightning port or a Google Pixel 2USB-C port with the help of a dongle. But Apple would rather you buy a $159 set of wireless AirPods, and Google would steer you to its competing $159 Pixel Buds. Google doesn't even include earbuds in the Pixel 2 box.
Unfortunately, high-quality earbuds with Bluetooth can be expensive. They can be inconvenient to pair with your smartphone or laptop and can suffer from short battery life. You also have to worry about losing the charging case if you buy a premium set such as AirPods, Pixel Buds or Samsung's $200 Gear IconX wireless earbuds.
And another thing: 'The quality of audio is less good than for a wired headset because audio is recompressed over the Bluetooth connection,' Fogg said. The industry group working on Bluetooth has lowered power requirements and is working on better sound for music, but for now audiophiles should proceed with caution.
By 2022, however, the disappearance of 3.5mm audio jacks will help push us to buy 285 million 'hearables' such as wireless earbuds, Juniper Research estimates. For many of us, that journey will begin next year.
Wire-free home broadband?
The next generation of cellular technology, referred to as 5G, could do wonders for removing the pesky coaxial cable around your house.
How To Charge Phone With Laptop Closed
Verizon last month said it plans to begin selling 5G wireless service as a replacement for traditional home broadband in three to five cities in 2018, with the first being Sacramento, California. 5G networks promise to be about 10 to 100 times faster than existing LTE network connections and today's typical home broadband speeds.
AT&T is already testing 5G technology at businesses and residences in Austin and Waco, Texas, and in South Bend, Indiana, as part of a plan to offer 5G for home internet service. It's running at 1 gigabit per second right now, a data rate that a few years ago seemed almost like science fiction for broadband.
Wireless broadband is a big deal. Think about this: It means no installers taking up your entire day punching cables into your wall or routing from one room to another to get to your modem. Or, in the case of Verizon Fios, no one digging up the outside of your home to add a fiber-optic line.
But the high-frequency radio signals used by 5G broadband services have a hard time penetrating walls. So installation likely will be more complicated than just plugging in a networking box bristling with antennas.
Cutting even more cables
What we call wireless charging today isn't truly wireless. Take a look at what plugs the charging pad into the wall. The charging pads can be fiddly, too, requiring you to put your device in just the right place and maybe worry that notification buzzes will vibrate the device off center and stop the charge.
That's why some companies like Energous and Ossia want to do away with the wires altogether by beaming power over radio waves through a whole room.
'We want to have our first deployment sometime in the second half of 2018,' Ossia Chief Executive Mario Obeidat said. That'll start with accessories like a battery case for your phone, but later will be directly integrated into phones and other devices like Wi-Fi routers that could send charging energy as well as data, he said.
Ossia's technology, called Cota, is powerful enough to charge a phone or two, even in use with the screen on, but not a laptop. 'When we think about wireless power, it's in the home, in retail space, the office, in the car -- the places people congregate,' he said.
Energous expects wireless charging transmitters with its WattUp technology toward the end of 2018 with a range of about three feet, though the first devices using WattUp charging pads should come early next year. In 2019, WattUp transmitters with a 15-foot range should arrive, CEO Steve Rizzone said.
One early WattUp market will be hearing aids that can charge while you're wearing them, Rizzone said. You'll also be able to set WattUp priorities, so, for example, it'll charge your wireless headphones while you're away then switch to your phone when you get home from work. Just don't expect a transmitter to keep a whole roomful of gadgets juiced.
Certification from the Federal Communications Commission is the last obstacle. 'We believe we'll have this before the end of this year,' Rizzone said.
So sure, wires will still have a place in our lives in 2018. But year by year, wireless technologies will keep making that place smaller.
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