The mobile phone battery is an energy storage tool that provides power to the mobile phone. It consists of three parts: a battery cell, a protection circuit and a casing. The mobile phone battery generally uses a lithium battery and a nickel-metal hydride battery. For the "activation" of the lithium battery, there are many opinions Yes: The charging time must be more than 12 hours, and full charge and discharge are repeated three times to activate the battery. This statement of "the first three charges must be charged for more than 12 hours" is for rechargeable batteries in the 1990s. The nickel-cadmium batteries at that time had a memory effect and needed to be fully charged to ensure battery capacity. The mobile phone uses a lithium-ion battery, which has no memory effect. Generally, it can be fully charged in 2-3 hours, which is enough. If the first three charging and discharging of the new battery can really reach 12 hours or more, it will cause great damage to the battery, and may cause the battery to swell or even burn. Fortunately, both the mobile phone and the charger have protection circuits. When it is fully charged, it will automatically power off, and it will not continue to charge when plugged into the charger. However, it is better to unplug the charger at this time to prevent the charger's protection circuit from overcharging, causing serious damage to the battery materials and affecting the battery's capacity and life.
