The battery will charge when it is inserted into the PowerShell™ and connected to the power supply. The battery can be charged with or without the Z1™ or Z2™ in the PowerShell™. The Z1™ or Z2™ screen will show the charging status.
The battery WILL NOT charge if the Z1™ or Z2™ is providing treatment (blowing air) even if the PowerShell™ is connected to the power supply.