Bluewater 9800-7101-00 Automatic Charging Relay 12V 140 Amp Marine Battery Manager

The Bluewater 9800-7101-00 Automatic Charging Relay (ACR) is an intelligent battery management solution designed for marine and RV dual battery systems. This advanced relay automatically manages battery charging to ensure maximum efficiency while protecting both starter and house batteries from over-discharge.

Key Features:

• Automatic Battery Management – Connects batteries during charging and isolates them when voltage drops, ensuring each battery maintains optimal charge
• Start Isolation (SI) Protection – Protects sensitive electronics during engine cranking by temporarily disconnecting house loads, indicated by a slow-flashing yellow LED
• High-Output Support – Compatible with alternators up to 120 amps continuous (140 amps intermittent)
• Dual-Color LED Status Indicators – Provides real-time battery status including Fault, Charging, Discharging, Combine, SI, and Override modes
• Under Voltage Lockout – Prevents the relay from closing when battery voltage is too low (9.5V for 12V systems, 19V for 24V systems)
• Marine-Grade Durability – IP67 waterproof rating, ignition protected, safe for gasoline-powered boats and RV applications

Technical Specifications:

• Continuous Rating: 120 Amps
• Intermittent Rating: 140 Amps
• Maximum Voltage: 48VDC
• Recommended Cable Size: 4/0 AWG

Ideal for boats with dual battery systems, fishing boats with trolling motors, RVs with house and chassis batteries, and any application requiring intelligent battery isolation and charging management.