Is it safe to leave your phone charged overnight?

Many people prefer to charge their phones at night before going to bed and wake up to a fully charged device the next day. At the same time, many people do not do this, citing safety issues as their concerns.

Now comes the question, is it safe to charge your phone overnight?

In fact, the phone is equipped with a power management chip that can monitor the charging process in real-time and can avoid the safety risks associated with overcharging the phone.

The power management chip intelligently identifies the fully charged phone and automatically cuts off the charging circuit to stop the power supply, thus protecting the phone from the hidden danger of overcharging the battery.

After the charging process is cut off, the battery will enter the discharge state. And when the battery is consumed to a certain level, the power management chip will start the charging process again.

In other words, the phone is in the cycle of charging and discharging during the whole night, so overcharging is avoided.

However, be aware of two situations that can easily cause safety accidents.

First, do not use knock-off cables to charge your phone. In this way, the mechanism of charging protection will not be impeded, which is good for protecting the battery and eliminating hidden dangers.

Second, avoid charging when the battery temperature is too high because high temperature will bring irreversible damage to the lithium battery. The normal operating temperature of cell phones is generally between 0 to 40 ℃. If the temperature is too high or too low, the battery will be damaged.

For example, many people like to play games while charging, but this will cause the temperature inside the phone to rise sharply in a short period of time.

Because the heat is diffused very slowly in a closed phone, when your hands feel a very hot phone, the temperature inside the phone has already been too high for a while. Over time, this behavior will cause huge damage to the lithium battery.

Some cell phone manufacturers are also optimizing the phone’s charging process according to user habits to prevent safety accidents caused by overnight charging.

Before the power management chip, there is trickle charging (if the power reaches about 80%, the charging speed will be reduced). Now some intelligent charging system can analyze the user charging habits so that the phone can reach full power just before users get up, more conducive to protecting the battery.

(Source: Unsplash)