Everyone is talking about whether to unplug the phone when it is charged to 90%.

At present, Samsung mobile phones on the market all use lithium batteries, which have been activated when they leave the factory. Lithium batteries have no memory and can be charged as needed. Therefore, it takes about 1-2 hours to charge the machine normally for the first three times, and it takes more than three times to charge normally. It is recommended not to use the mobile phone when charging. You don't have to run out of electricity to charge your mobile phone. When the machine prompts that the battery is low or the remaining battery is insufficient, it can be charged.

Here are some tips for using mobile phone batteries:

1. Don't overdischarge. When the device prompts "insufficient power", it should be charged; Do not start charging until the equipment is automatically turned off and the battery has been discharged. This will affect battery life.

2. Don't overcharge. When the charger shows that it is full, you should unplug it. Current chargers are generally designed to be full and stop automatically, and it is okay not to take the battery off the charger for a short time. However, if the battery is left on the charger for a long time until the grid voltage rises late at night, the charger that has stopped charging will continue to charge after the voltage rises, resulting in overcharge of the battery. This will affect battery life.