If you are planning on changing the battery password, you will need to enter the default password '1234' when prompted for the old password.
Note: There is no password retrieval or reset function. Password reset is a function that can only be performed by technicians at the manufacturer. The Reset function within the Battery Manager App is for resetting the default battery settings (ie. the Dual Charger setting) only and will not reset the password back to the default "1234".
Because of this, we strongly recommend that you don't change the password unless you absolutely needed to, and if you do change it, make sure to keep a record of the new password. Once you have changed the password, you will be asked to re-enter it every time you access the Settings menu within the Battery Manager App.