充电周期

充电周期是指可充電的蓄電池从充满电用到电量完全用完，之後再從完全沒電的狀態到充滿電的過程。這一過程也被稱為電池完成一次循環次數。另外如果電池從滿電狀態下用到25%，之後充到滿電，之後用了25%，再繼續充到滿電，此時電池也算是完成一次循環次數^[1][2]。锂电池的寿命取决于充电周期（循環）次數^{[3][4][5][6][7][8][9][10]}。

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