According to convention and the design of cordless phones, they should be returned to the base after each use. This can activate the phone, replenish the released capacity, and compensate for the capacity loss due to self discharge. However, we recommend occasionally fully discharging the battery to restore its initial capacity and discharge performance. Of course, if the phone is not used for a long time, it is best to remove the cordless phone to avoid the battery being overcharged for a long time. In addition, even after the cordless phone is turned off, there is still a small amount of current discharging in the system. Therefore, when not in use for a long time, the battery should be removed and placed in an open circuit, and recharged when in use.