This has been mentioned in other hybrid topics again and again. The old-school, but easy method to run Powershell is by:

• echoing the Powershell script into a temporary script
• Execute the temporary script
• Optionally remove the temporary script

---

This is a sample script.

@echo off
echo powershell-command>Temp.ps1
echo another line>>Temp.ps1
    rem echo the script into a temporary file

powershell -File Temp.ps1
    rem execute the temporary script

del Temp.ps1
    rem Optionally remove the temporary script

The method above requires tons of echo statement if a long script is required, here is a better method suggest by @Aacini

@echo off
setlocal

    rem Get the number of the "<resource>" line
for /F "delims=:" %%a in ('findstr /N "<resource>" "%~F0"') do set "start=%%a"

    rem Skip such number of lines and show the rest of this file
(for /F "usebackq skip=%start% delims=" %%a in ("%~F0") do echo %%a) > Temp.ps1

powershell -File Temp.ps1
del /f /s /q Temp.ps1

goto :EOF

<resource>
PS
Powershell script

Using the POWERSHELL command, we can execute a 1-line command directly from a batch script, without any temporary file.

---

Here's the syntax.

powershell.exe -Command <yourPowershellCommandHere>

You may also want to include other flags, like -Nologo to improve the actual outcome.

This is the approach proposed by the stackoverflow's user rojo which also can handle the command line arguments :

<# : batch portion
@echo off & setlocal

(for %%I in ("%~f0";%*) do @echo(%%~I) | ^
powershell -noprofile "$argv = $input | ?{$_}; iex (${%~f0} | out-string)"

goto :EOF
: end batch / begin powershell #>

"Result:"
$argv | %{ "`$argv[{0}]: $_" -f $i++ }

called like this:

psbatch.bat arg1 "This is arg2" arg3

will produce:

Result:
$argv[0]: C:\Users\rojo\Desktop\test.bat
$argv[1]: arg1
$argv[2]: This is arg2
$argv[3]: arg3