Is there any other equipment or hardware that I need to purchase for safety of the PV system?

For safety purposes, it is highly recommended that the user places a fast acting fuse or DC breaker between the ungrounded lead of the charge controller to the corresponding battery terminal as close as possible to the battery terminal. This will protect the conductor, device, and user from overcurrent. It is recommended installers use electrically insulated tools when wiring a system and follow applicable laws for the installation region.