Is it harmful to keep your phone or tablet on charge overnight?

Is it harmful to keep your phone or tablet on charge overnight?

Is it safe to use your phone while it's charging?

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answers (11)

Answer 1
January, 2021

Modern battery cells in gadgets are well thought out, when the battery is fully charged, the phone stops sucking current well, or muffling it from time to time to keep the battery fully charged. Don't be afraid of this

Answer 2
January, 2021

Yes, and that's in the affirmative. In order not to sign here for a very long time, we can say in favor of a couple of facts. The smartphone has such an element (controller) that is responsible for turning off the current supply to the battery, but what if it suddenly fails?

Also think, if you leave the phone at night, it will receive a constant CHARGE, that is, it will work and discharge a little bit, but since it is connected to the network, this will not happen, it will immediately receive a current and 100 % battery. And now the question is: wouldn't it be harmful for the batteries to constantly jump from 99% to 100% at night (several times)? Despite the fact that you will not see this, but the batteries do not care, it receives current then.

IMHO, all of the above is my personal arguments, you can read in more detail about the battery using the example of XIaomi (there There is also a link to an English source, read).

In conclusion, Samsung devices have an option that artificially lowers the battery level at the system-wide level, from 100% to 85%. That is, you can safely charge your tablet / phone up to 100%, but in fact only 85%. This little trick allows you to increase the number of maximum charge cycles.

Now think about whether it affects or not ...

Answer 3
January, 2021

the smartphone must be charged even when the indicator shows "100% charge". buy a yusb tester showing the charge voltage and charging current - and you will see for yourself that after "100%" for about an hour more, the smartphone continues to gain battery capacity. then the charge stops. the reason for being able to charge at least three days is not in the type of battery (lithium or nickel-cadmium), the reason is in the program that controls the smartphone charge controller). the program will not allow the smartphone battery to be charged above the rated capacity.

Answer 4
January, 2021

Myths are myths, but the fact that lithium-ion and lithium-polymer batteries are not recommended to be charged at 100% is a fact. Experts do not recommend, not copywriters. If left overnight, the device will definitely be 100% charged.

On the other hand, this type of battery is just a capitalist's dream: in 2-3 years it is guaranteed to lose up to 50% of its capacity , so it makes no sense to tremble especially over those percentages that can be saved with extremely careful use.

If left in the sun - then yes, the result will be significant, rough, visible: irreversible loss of a significant part of the capacity or even complete battery failure.

More details on this issue can be found here .

Answer 5
January, 2021

No, not harmful, an absolute delusion!
The gadget MANAGES THE CHARGE BY itself !!!
It will stop it as soon as it considers the battery charged.
It is harmful - to use the phone while charging it, ESPECIALLY - PLAY.

Answer 6
January, 2021

Many users tend to believe that leaving a smartphone or tablet to charge overnight can negatively affect the battery - it will eventually stop holding a charge for a long time.

With modern smartphones, you don't have to worry about this, this is just a myth based on the experience of using the batteries of previous generations of phones - nickel-cadmium batteries, the resource of which decreased if they were not fully charged (such batteries had to be charged for a certain time and only when they were completely discharged).

As for modern smartphones, they have a completely different charging system, since they use lithium or lithium-ion batteries equipped with a special controller that "stops" the charging process as soon as the battery is 100% charged.

To make your smartphone battery last longer - try not to bring it to 0% charge too often, recharge it whenever possible, at least about 10-20 cents (it is not necessary to wait up to 100% every time, the optimal output will be to charge up to 40-50 percent).

The best charging wire is the original one, its use will also help the battery last longer.

If for some time you plan not to use your smartphone for a long time, it is better not to leave it fully charged, but leave it to wait for the continuation of its service with a half charge, in a cool dry place - this will also help preserve the battery life.

If you have any questions or additions on the topic - write, we will be happy to discuss.

Elena, technical specialist in the Benks online store /

Answer 7
January, 2021

As far as I know, then 50-60% of the charge is a condition for long-term storage, not operation. So it is quite possible to put modern lithium batteries at night and sleep in peace. But if you plan not to use for a long time, it is better to charge at 60%.

Answer 8
January, 2021

It's understandable why we leave the iPhone on charge all night. We want to wake up in the morning and get a 100% charged gadget so that it doesn't sit down on the way to work and work without recharging for at least half a day.

But how safe is it for the battery?
Many myths are associated with this, the main one is that long-term charging overheats the battery and spoils it. This is not entirely true. Smartphones have long learned to stop the process when the battery is sufficiently charged.

But the danger of this process lies elsewhere - any battery has a limit volume, a certain number of charge-discharge cycles.
The batteries of the latest iPhone models last for 1-2 years, after this period you will notice that the battery runs out much faster. And in the event that you often leave the iPhone on charging overnight, the battery charge decreases, 2 years turns, at best, into a year of stable battery operation.

Therefore, it is usually recommended to charge the phone to a maximum of 80 % , iPhones even send a “battery sufficiently charged” notification when the charge reaches 80%.

Also, it's best not to wait until your smartphone is completely discharged. Li-Ion the batteries used by Apple and Samsung work better with a charge reserve, so you can recharge your smartphone at 20-30% already.

If you have been using your smartphone for more than two years, you can hardly " revive "the battery. It will sit down faster and faster. In this case, it is not necessary to take out a loan or save up for a long time for a new device. You can buy an updated iPhone or Samsung from Smart Price.

For example, you can buy any iPhone up to 7 models and keep within the same 20 thousand.
Updated smartphones are devices that have passed certification, the company guarantees their quality. Yes, they were once used, but all smartphones went through diagnostics, cleaning and an update process, which includes replacing the display and battery if required. Within 90 days, you can replace the device with another if something went wrong.

Smart Price ensures that all devices work like new.

Answer 9
January, 2021

Have you ever noticed that when buying digital technology, the batteries are 50-60% charged?

It's not easy, the fact is that 60% is the optimal battery charge, at which the battery loses its volume the least over time. And the further the value is from this 60%, the faster the battery will wear out. Therefore, it is better not to fully charge or discharge your gadgets once again. The optimal working charge is 40-80% and it is better to leave it overnight within these limits, and in the morning to recharge it to the end (if necessary).

The Sony company, for example, has added a smart charging function to new smartphones, the phone first charges to 90%, and charges to the end for a certain time before the alarm clock. My Lenovo laptop has a battery storage function; when turned on, it maintains a charge of exactly 60% with a constant connection to the network. The rest of the companies do not yet know what functions they have.

Therefore, if you want your battery to last longer and more efficiently, do not leave your gadget charging overnight.

Answer 10
January, 2021

Not harmful. Modern devices are equipped with lithium-ion or lithium-polymer batteries. Generally speaking, these are quite dangerous power supplies, as even with a small overcharge they quickly overheat and can explode. And by the way, not only because of overcharging. That is why ALL such batteries are equipped with charge-discharge and temperature control systems built directly into the battery case. These devices are reliable enough and will not allow your carelessness to damage your device, as well as your health and property.

Unfortunately, problems did happen, and, oddly enough, a serious problem was with Sony laptops: batteries exploded during operation. But the conclusions were made, and nothing has been heard about such problems for a long time.

Charge control systems have been used for many years, they were in the first cell phones with nickel-cadmium batteries, and in laptops, so times When the batteries in my calculator were swollen, because I forgot to turn off the power supply from the network, they were left behind long ago.

Power adapters (charging) are also built on modern element base and on the basis of switching power supply circuitry; they contain multi-stage protection against both short circuit and overload.

If you have any doubts, for example, your device or power adapter has become suspiciously hot, quickly turn off, etc., then it is better to consult with repair specialists. It is dangerous to operate a device with signs of malfunction: although most likely they will not harm you and will only die quietly in the end, many of them can be saved and extended service life if preventive measures are taken in time.

What we have really unreliable, so this is the power supply, so do not leave the devices connected to the network unnecessarily, when leaving the house, disconnect the unnecessary, and when leaving for a long time, it is better to turn off everything from the sockets at all. You can protect your home network with special devices, but not all of them reliably protect, and many themselves are not reliable enough, but for those who have a private house with a power supply from poles, I would recommend that they seriously take care of this. But this, as they say, is a completely different story.

Answer 11
January, 2021

The more modern the phones are, the better the batteries that make them work. First, the phone is charged up to 80 percent with high current, and then the slow charging mode (that is, low current) is activated, which lasts for several hours. If the phone has not been turned off after it is fully charged, it is charged with a small current to compensate. It turns out that keeping your phone / tablet on charge all night is not harmful

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