The National Luna Intelligent Split Charging Kit is a complete turnkey Dual Battery system, that includes an Intelligent Solenoid, Dual Battery Controller, and all the necessary materials to complete the job. Battery and tray not included.
Short Version
The National Luna Intelligent Split Charging System allows you to maintain two or more batteries in your vehicle. The Intelligent Solenoid manages the charging of both of them when the vehicle is running, and isolates them when the vehicle is off. It is all automatic. You can monitor the status of the batteries, and manually override the connection from the Dual Battery Controller.