Can a Phone, Laptop or a Tablet be Overcharged?

The biggest advantage that modern technology offers us is the portability of devices. Earlier, you could not even imagine moving your computers here and there but as the size of the devices grew smaller, and laptops and mobile phones were invented, you were presented with an all-new level of comfort that allowed you to carry your devices along with you wherever you go. This mobility only came into existence because of the invention of the batteries. Since the batteries support your devices and keep them up and running even when they are not plugged in, hence you can freely use your devices on battery power without any worries.

When this technology was new, the common people, as well as the experts, suggested to not keep charging your batteries once they are 100% charged. This could not only consume an extra amount of electricity but also cause harm to your battery thus reducing its lifespan. However, now most of the people say that our devices are smart enough to disconnect themselves from electricity once they get fully charged but not all the people think the same. Some of them still prefer to disconnect their chargers once their batteries are 100% charged and they propose several reasons for that. In this article, we will try to throw light on both of these views by stating the difference between the older and the newer batteries and finally, we will suggest you what is the best option for you.

Nickel Cadmium Battery vs Lithium Ion Battery

What is the Difference between the Older Types of Batteries and Modern Batteries?

When the batteries were used in the laptops and smartphones for the first time, they were not that efficient. The user had to look after the charging of his device manually and as soon as his battery is fully charged, he was advised to unplug the charger. The reason behind this advice was that earlier, the batteries were not intelligent enough to cut off the power supply once they are fully charged. This caused the overcharging of batteries, that was the reason behind their quick depletion.

However, today most of the devices use the modern Lithium-ion batteries, which are smart enough to detect that they are 100% charged and then they simply do not take the power from the charger anymore. Therefore, the problem of overcharging of batteries do not exist anymore. Nevertheless, there is still an issue with these batteries. If you keep your devices which have these type of batteries plugged in beyond 100%, then they have the self-discharging capability i.e. they keep toggling between 99% and 100% battery values. As soon as your battery reaches 100% and it is still plugged in, it will reduce to 99% and then again goes to 100% and this keeps happening until you plug out your charger.

Because of this very reason, your device produces some amount of heat energy. If that dissipated heat crosses beyond a certain limit, then it can be harmful to your device because most of the modern gadgets that we use today such as mobile phones and laptops are not heat friendly. Therefore, we need to take good care of the temperature at which we keep our devices and operate them.

Should you keep charging your Laptops and Smartphones beyond 100%?

Well, as we stated earlier that people have different opinions regarding this question. We will state here the pros and cons of doing this. Only then, you will be able to decide whether you should do this or not.

It is quite clear by now that modern batteries do not have the overcharging issue anymore. This can be a good reason for charging your batteries beyond 100%. For example, you came back from office after a very hectic day and you immediately went to bed after plugging in the charger of your mobile or laptop, which had a low battery percentage, and then you got up in the morning. You do not have to worry that your device has been excessively charged overnight because your device’s efficient power management stopped it from happening.

However, as we discussed that the continued trickling between 99% and 100% after your battery is fully charged, generates some amount of heat and that heat can be harmful to your device. Therefore, it is highly recommended that whenever you plan to plug in the charger of your device for a longer time then it is best to remove the casing in which your device is enclosed in order to prevent overheating.

Now that you know that it is not harmful to keep your devices such as laptops and smartphones on charge even if they are already 100% charged, you should also consider the fact that keeping your charger plugged in unnecessarily can also result in the wastage of electricity, which is obviously a very precious entity these days. Therefore, in my opinion, you can keep your devices plugged in beyond 100% when you forget to plug them out or you are busy doing something more important. However, if you can manage to get a second out to remove your charger from the socket when your battery is fully charged, then it will not only result in efficient power consumption but will also prevent any excessive heat dissipation.

Habiba Rehman
Major love for reading, but writing is what keeps me going. Dream to publish my own novels someday.