As baterias de-íon de lítio só podem ser carregadas e descarregadas 500 vezes?
I believe that most consumers have heard that the life of a lithium battery is "500 times", and 500 times of charge and discharge. After this number of times, the battery will "end of life". In order to prolong the life of the battery, many friends always use Does it really prolong the life of the battery by charging it when the battery is completely depleted? the answer is negative. The life of a lithium battery is "500 times", which refers not to the number of times of charging, but a cycle of charging and discharging.
A charging cycle means that the battery is fully charged from full to empty, and then from empty to full, which is not equivalent to charging once. For example, a lithium battery is only half charged on the first day, and then fully charged. If it's still the same the next day, that's half of the charge, for a total of two charges, which counts as one charge cycle, not two. Therefore, it may usually take several charges to complete a cycle. Each time a charge cycle is completed, the battery capacity decreases a little. However, this reduction in power is very small. High-quality batteries will still retain 80 percent of their original capacity after being charged for many cycles. Many lithium-ion battery-powered products are still used as usual after two or three years. Of course, the lithium battery still needs to be replaced after the end of its life.
As chamadas-500 vezes significa que o fabricante alcançou cerca de 625 vezes recarregáveis a uma profundidade constante de descarga (como 80 por cento), chegando a 500 ciclos de carregamento.
(80 por cento 625=500) (ignorando fatores como a redução da capacidade da bateria de lítio)
However, due to various influences in real life, especially the depth of discharge during charging is not constant, "500 charging cycles" can only be used as a reference battery life.
