To use Batteries Included, the easiest solution is to take 
advantage of both findlib and ocamlbuild. In turn, to do
that, the easiest method is the following:

* in your project directory, copy file doc/batteries/myocamlbuild.ml 
  (it's part of Batteries Included, you can find it in this directory,
  be sure to keep the name "myocamlbuild.ml")

* still in your project directory, modify your file called "_tags"
  (if it doesn't exist yet, create it) to add the following line:
      <*>: pkg_batteries

Alternative techniques are documented in
          doc/batteries/html/setup.html

For more informations on the contents of Batteries Included, please
take a look at the documentation, available at
	  doc/batteries/html/index.html