I couldn't find a specific video for the Defiant GA7X2D01AAP Castle Satin Nickel Single Cylinder Electronic Keypad Deadbolt, but I can guide you through the process: Unlock the door: Ensure the door is unlocked and open. Remove the interior escutcheon: Use a screwdriver to remove the screws and take off the interior escutcheon (keypad cover). Replace the batteries: Remove the old batteries and replace them with four new AA batteries. Reassemble the lock: Put the escutcheon back on and secure it with the screws.