To change the batteries in the AMSEC-American Security B2200-ESL20 Electronic Home Safe, follow these steps: - Locate the keypad housing and turn it counterclockwise to expose the battery compartment. - Remove the old batteries one at a time and disconnect them from the connectors. - Insert fresh 9-volt batteries, ensuring proper connection. - Reattach the keypad by rotating it back into place. - Test the lock with the safe door open to confirm functionality. For a visual guide, you can check out this video tutorial - https://www.youtube.com/watch?v=QKwTwMt_jzg