Adding batch file to portable apps menu?

Nope, no way it can launch it. Well actually... There is a way, but it's fairly invlolved:

1. Make an App folder, and an appinfo folder inside.
2. Make an appinfo.ini file.
3. Put this into the file, replacing the stuff in braces:
   

   [Details]
   Name={Name}
   AppId={Namew/ospaces}
   Publisher=
   Homepage=
   Category=
   Description=
   Language=Multilingual
   Trademarks=
   InstallType=
   
   [License]
   Shareable=true
   OpenSource=true
   Freeware=true
   CommercialUse=true
   
   [Version]
   PackageVersion=0.0.0.0
   DisplayVersion=0.0
   
   [SpecialPaths]
   Plugins=NONE
   
   [Control]
   Icons=1
   Start={BatchFileinthemainfolder}
   ExtractIcon={IconFile}
   

4. Restart the menu.

Or do it the easy way: compile your batch files, or better yet, switch to AutoHotKey (which has some pretty neat functions, including GUI and keyboard hooks).
Good luck!