Lithium battery does not have to be fully charged for the first time

It is understood that most of the current electronic products use lithium batteries, and a few years ago, electronic products used nickel-cadmium batteries, the memory effects of these two batteries are different. The so-called memory effect refers to the previous charging, if not stopped then the battery will remember the capacity of the previous charging.

The experimental personnel of the South China Institute of Technology chemistry laboratory successively carried out 5 irregular charging and discharging on the lithium battery and the nickel-cadmium battery respectively: the charging was started without consuming the light, and the charging was stopped when the charging was 70%. At the same time, the two batteries were fully charged and charged. The results of the charge-discharge curve show that after five consecutive irregular charge and discharge, the capacity of the lithium battery does not change significantly, and the capacity of the nickel-cadmium battery decreases.

Professor Li of South China University of Technology said that through this experiment, lithium-ion batteries have no memory effect, and the first charge does not need to be filled for 10-14 hours. The first few full-filling methods are only for the management of battery capacity by electrical equipment. . In the future use process, it can also be used with the charge, without affecting the capacity.

In addition, the news that mobile phone battery explosions hurt people is also scary. Continuous long-term charging will make the phone hot, will it cause an explosion? Professor Li said that the experimenter charged two lithium batteries for more than 12 hours, one is a regular battery, the protection circuit is intact, and the other is protection circuit damage.

Experiments have shown that the regular battery is protected by a protective circuit, and even if it is charged for a long time, it will not cause an explosion, and the battery capacity has no effect. Unprotected batteries, as the charging time increases, the temperature will become higher and higher, and explosions may occur after more than 100 °C.

Experts caution that you must use batteries produced by regular manufacturers and use standard chargers to avoid danger.

The page contains the contents of the machine translation.