[mssms] run task sequence step only for desktops

[Kehl Reto]

I am using "Select * from Win32_Battery where availability > 0" to install 
software only for laptops and this works.

Now I need a query to install software only on Desktop PC's.

If I'm using "Select * from Win32_Battery where (BatteryStatus = 0)", it 
results in "The WMI condition expression is evaluated to be FALSE" but I need 
to have a query which returns TRUE

(it is not MDT Task Sequence)

any suggestions please..?