Shallow discharge, avoid frequent and complete discharge
In the past, both nickel-metal hydride batteries and nickel-cadmium batteries had a "memory effect" and needed to be fully discharged to maintain their power storage capacity. New electronic devices basically use lithium batteries without memory effect. In fact, fully discharged lithium batteries are harmful. You should try a shallow discharge-for example, charge when the battery level drops to 40-70%. Unless you have to, try not to let your battery power drop below 20%.
If a new lithium battery replacement for lead acid is discharged to 50%, charged, and then discharged to 50%, this will only count as a single "cycle." You don't need to worry about shallow discharge.
Of course, shallow discharge will bring a problem, the notebook computer will incorrectly estimate the battery life. Notebook computer manufacturers generally recommend that users perform a full discharge once a month to help calibrate the estimated battery life.





