Batch command runas with a standard trick
echo password | runas
it is NOT going to work, because the password should be entered manually.
If you do not mind clicking Yes in UAC window you can use
Elevate.exe
With it you won't need writing password anywhere
"C:\yourFOLDER\elevate.exe" "C:\yourScriptFOLDER\yourScript.bat"
would be enough to start script with admin privileges (still need to click YES on UAC window).