Power adapters are basically used in our lives. Mobile phone needs, electric vehicles need, computers also need, the application of power adapters can be said to be very extensive.

The power adapter is mainly a device that provides energy to electronic devices, so how do we judge whether the battery is full in the process of use? Here's how the charger can tell if the battery is fully charged:

In the process of charging, the power adapter generally takes a period of time to determine whether the battery is fully charged, which is generally determined by the way the power is judged, rather than being able to judge it immediately.

Now the mainstream and recognized more accurate judgment methods are mainly -△V and 0△V, and high-end chargers are generally based on these two judgment methods. However, after the battery is put into the charger and starts charging, regardless of whether the battery has power or no power, whether it is fully charged, the battery will not appear immediately or there will be a sufficient amount of -△V or 0△V, but it takes a period of time before there will be enough charger to judge -△V or 0△V, so the power adapter will take some time to judge whether it is fully charged.

However, the charger judged by the lowest level of voltage comparison can judge the "fully charged" battery in a short time, because the voltage comparison charger can judge the battery voltage. As long as the voltage of the battery is reached, it does not care whether the battery is really full, and it is judged as "full". Under normal circumstances, the battery that reaches that voltage has a lot of room for saturation, that is, it is basically not really full. Therefore, this judgment method is generally only used on the lowest level of the power adapter.

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