Product Description

Blue Sea Systems 7650 Add-A-Battery Kit

The Blue Sea Systems 7650 Add-A-Battery Kit is the industry-standard solution for managing two battery banks in marine, RV, or off-grid applications. This kit includes a Dual Circuit Plus™ Battery Switch and a 120A SI-Series Automatic Charging Relay (ACR), providing simple and reliable battery isolation and charging.

Features

  • Automatic Battery Charging: The 120A ACR automatically combines batteries during charging and isolates them when not charging, protecting your starting battery from discharge.
  • Dual Circuit Plus™ Switch: Offers ON, OFF, and COMBINE functions for quick manual control of both battery banks. Ideal for emergency starts or total system shut-off.
  • Heavy-Duty Ratings:
    • Switch rated at 350A continuous and 700A cranking
    • ACR rated at 120A continuous (210A intermittent)
  • Ignition Protected and Waterproof: Safe for use in engine compartments, with IP66 waterproof rating to withstand marine conditions.
  • LED Status Indicator: Built-in visual diagnostics help monitor voltage status and relay function.
  • Compact and Durable Design: Optimized for small spaces with corrosion-resistant components and robust housing.

Applications

  • Marine vessels with start and house battery systems
  • Recreational vehicles (RVs) and camper vans
  • Off-grid solar or emergency backup systems
  • Any dual-battery setup needing simple and automatic management

The Blue Sea 7650 kit delivers safe, automated battery isolation and charging in one compact package—backed by Blue Sea Systems’ reputation for rugged marine-grade products.