41 pieces are used to put together the Do It Yourself Workbench Battery Installation & Information The Do It Yourself Workbench drill requires 2 AA batteries, not included. Using a Phillips screwdriver, remove the battery cover from the drill and insert the batteries as shown. Make sure to match the polarity. Replace the battery cover securely. • Batteries should be installed and replaced only by an adult. • Do not mix alkaline, standard (carbon-zinc) or rechargeable (nickel-cadmium) batteri