Marinco 7650-BSS Add-A-Battery Kit 120A with Dual Circuit Switch and Automatic Charging Relay

The Marinco 7650-BSS Add-A-Battery Kit provides a complete dual battery management solution for marine applications, supporting alternators up to 120 amps. This system is as simple to operate as an ON-OFF switch, yet effectively manages the switching and charging of two batteries from a single charge source.

Kit Includes:

• Dual Circuit Plus Battery Switch (Model 5511e) - isolates engine and house circuits
• SI-Series Automatic Charging Relay (Model 7610) - combines batteries during charging while keeping them isolated during cranking

Key Features:

• Automatically combines batteries during charging and separates them when engine is off
• Isolates start and house circuits to prevent accidental battery drain
• Emergency battery combining function for jump-starting
• Cranking rating: 700 amp DC; continuous rating: 300 amp DC
• Low voltage protection prevents linking a charged battery with a drained one (lockout below 9.5V for 12V systems, 19V for 24V systems)
• Tin-plated copper studs for maximum conductivity and corrosion resistance
• Ignition protected - safe for gasoline powered vessels
• Rated IP66 - protected against powerful water jets and heavy seas

The system shares charge between two batteries more efficiently than a traditional battery isolator, and automatically manages your battery banks so you can focus on enjoying your time on the water. Simply turn the switch ON when you arrive and OFF when you leave. CE marked, UL listed, and meets ABYC requirements for battery switches.