Export all PDF files as Text Using Adobe Acrobar Pro DC

You may use PowerShell combined with Xpdf.

Xpdf will install a program called pdftotext, which can be invoked from a PowerShell script such as:

$FILES= ls *.pdf
foreach ($f in $FILES) {
    & "C:\Program Files\xpdf\bin32\pdftotext.exe" -enc UTF-8 "$f"
}

A similar batch script can be invoked from a .bat file without using PowerShell:

for /f %%G in ('dir /b') do {
  "C:\Program Files\xpdf\bin32\pdftotext.exe" -enc UTF-8 "%%G"
)

(Note: None of the scripts was tested.)