Is it good to keep the smartphone plugged in when it is 100% charged?

 Is it good to keep the smartphone plugged in when it is 100% charged?

A green light indicates that the battery is 100% charged.

Usually we believe in green complaints and unplug the charger immediately.

However, the battery gauge is dripping even when fully charged.

Why does it feel like it's not 100% the same?

This is especially the case with smartphones that have been used for a long time.

It is said that the green light hides a secret that we do not know.

What is it?

Even when the green light indicates that the smartphone is 100% charged, if you keep it plugged in, it will charge more.

The charge rate is displayed by measuring the voltage, but since there are countless lithium ions in the battery, it is impossible to check them all by connecting them one by one.

Although the surface can be considered charged, it cannot be said that the interior is fully charged.

Therefore, even if the green light is on, it is not fully charged, so it is recommended to keep it plugged in.

Usually, to fully charge the inside, you need to leave it plugged in for at least 2 hours.

The reason is that the concentration of lithium ions in the battery varies greatly, so it is necessary to wait until the voltage is sufficiently spread.

In particular, batteries that are more than a year old have lower performance, so you must give them enough time to charge more.