The relationship between the lifespan of lithium batteries and the number of charges.

The relationship between the lifespan of lithium batteries and the number of charges.

Consumers all believe that the lifespan of lithium batteries is "500 times", and beyond this frequency, the battery will be "scrapped". Many users, in order to better extend the battery life, let the battery be completely depleted before each charge. Does this practice really extend the battery life? The lifespan of a lithium battery is 500 times, not referring to the frequency of charging, but to one charging and discharging cycle.

A charging cycle refers to the entire process of a battery from full to full, and then from full to full. Not equal to one charge. If a lithium battery only consumes half of its electricity in a day and is then fully charged. The next day is the same, which means half of the charging and discharging, with a total of 2 charges, which can be considered as one charging cycle instead of two. So, a few charges are usually one cycle. Every time a charge is performed, the battery level will slightly decrease, resulting in minimal power consumption reduction. After multiple charging and discharging cycles, the initial capacity will remain at 80%.