Blue Sea Systems 7650003BSS Add-A-Battery Kit 120A with Dual Circuit Plus Switch and ACR

The Blue Sea Systems Add-A-Battery Kit prevents the unintended discharge of your engine start battery by adding a second battery to your electrical system. This kit is designed for boats with alternator output of 120A or less.

What's Included:

• E-Series Dual Circuit Plus™ Battery Switch for simplified switching between battery banks
• SI-ACR (Automatic Charging Relay) that automates charging between two batteries

Key Features:

• Isolates the start battery from house loads, preventing discharge of the start battery
• Provides simple control of charging and battery switching for two battery banks
• Simplifies operation - just turn the battery switch ON when you arrive and OFF when you leave
• Built-in LED indicator shows when batteries are combined during charging
• Works with all charge sources including alternators, AC chargers, and solar panels

This two-battery management system is easy to use and install, providing automated charging while maintaining battery isolation for reliable engine starting.