SKU:BSS7650

Blue Sea Add-A-Battery

Blue Sea Add-A-Battery

Regular price $157.99 USD
Sale price $157.99 USD Regular price
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Explore the Blue Sea Add-A-Battery for Battery Expansion

Blue Sea Add-A-Battery

Blue Sea Systems Add a Battery Kit 120A

Model: 7650-BSS


  • Simplifies switching
  • Isolates engine and house circuits
  • Combines batteries for emergency starting
  • Tin-plated copper studs for maximum conductivity and corrosion resistance
  • Automatically combines batteries during charging

The ADD-A-BATTERY 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

The Add-A-Battery includes a Dual Circuit PlusTM Battery Switch and an 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.


What's in the Box:

  • 5511e battery Switch
  • 7610 SI-ACR relay

What is the Blue Sea Add-A-Battery?

The Blue Sea Add-A-Battery is a high-quality, compact device designed to safely and efficiently add a second battery to an existing charging system without compromising the performance of either battery. This product is ideal for marine, RV, and off-grid applications where battery isolation is crucial. It automatically senses the voltage and connects the second battery only when the primary battery is fully charged, ensuring optimal battery health and longevity. This innovative design eliminates the need for additional manual switching and complex wiring.

Key Features and Benefits of the Blue Sea Add-A-Battery

The Blue Sea Add-A-Battery offers several features that make it a preferred choice in battery management. It includes an automatic voltage-sensing relay, robust corrosion-resistant materials, and an easy-to-install design. One of the main benefits is its ability to protect the starting battery from being drained while allowing auxiliary batteries to charge efficiently. Additionally, it supports multiple battery types and configurations, making it versatile. Its durable construction ensures reliable operation even in harsh marine or automotive environments.

Why Choose Blue Sea Add-A-Battery for Your Setup?

Choosing the Blue Sea Add-A-Battery ensures a reliable and user-friendly battery expansion system. It simplifies installation by reducing wiring complexity and enhances system safety through its smart isolation function. The product promotes longer battery life by preventing over-discharging and overcharging conditions. Its compact size allows installation in tight spaces, which is often critical in boats and RVs. Furthermore, Blue Sea Systems is a trusted brand known for durable and innovative electrical components, providing peace of mind that your battery setup is both efficient and safe.


Only 6 piece in stock!


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