Blue Sea Add-A-Battery Kit

• Simplifies switching and automates charging for a 120A, two battery bank solution for inboard and outboard powered boats. • For alternators up to 120A. • Includes: e-Series Dual Circuit Plus Battery Switch (5511E) and the SI-ACR Automatic Charging Relay. • These components simplify switching and automate charging, so that all you have to do is turn the battery switch ON when you arrive and OFF when you leave. • Ignition protected.