Though lithium-ion batteries perform well, you have to control their response to critical situations such as discharging and/or overcharging. This monitoring process is done using an integrated electronic card known as the BMS (Battery Management System).
You've read the three tips carefully. You've therefore decided to charge your battery frequently within its comfort zone of 20% to 80%. After a certain amount of time, however, this may cause the BMS to stop recognising the extremes (completely empty and fully charged).
It is therefore recommended to recalibrate the BMS once a year. You can do so by taking the battery from full to empty two or three times in succession, using a normal charging station (no fast charging).
Don't forget to recharge the empty battery immediately, though!