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.