Additional battery connection kit - Add-A-Battery

The Add-A-Battery Kit (Blue Sea Systems Add-A-Battery Kit) simplifies the retrofitting of a second battery bank for more powerful onboard electrical systems. The set includes an e-Series Dual Circuit Plus Battery Switch and an SI-ACR Automatic Charging Relay with 120 A continuous current – designed for alternators up to 120 A in inboard and outboard applications.

Advantages

• Includes e-Series Dual Circuit Plus Battery Switch and SI-ACR Automatic Charging Relay as a matched set
• Switches both battery banks simultaneously while keeping them galvanically isolated
• Can manually connect both banks in an emergency (weak starter battery)
• ACR automatically connects banks during charging and disconnects them during discharging – including optional start isolation for sensitive electronics
• Designed for alternators up to 120 A – suitable for inboard and outboard engines
• Simple operation: Turn on battery switch upon arrival, turn off upon leaving

Technical Data & Compatibility

• Included isolation relay: SI-ACR, continuous current 120 A, intermittent 210 A (5 min.), protection class IP67
• Included battery switch: e-Series Dual Circuit Plus, protection class IP66
• Combine voltage 13.0 V, disconnect voltage 12.75 V
• Ignition protected according to ISO 8846 and SAE J1171

For which electrical systems is the Add-A-Battery Kit suitable?

For all boats with stronger alternators up to 120 A that require a second battery bank for auxiliary consumers and want to reliably separate the start and house batteries. The kit covers both inboard and outboard applications and provides all necessary components in one set.