Bluewater Auto Charging Relay 12V - 140 AMP (Part Number 9800-7101-00)

Auto Charging Relay 12V - 140 AMP

The automatic charging relay (ACR) automatically manages battery charging to ensure maximum efficiency and protect your batteries.

Features:

• Automatic battery management connects batteries during charging and isolates them when the voltage drops
• Start Isolation (SI) 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 120A
• Dual-color LEDs provide real-time battery status: 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)
• Durable design IP67 waterproof, ignition protected, safe for marine and RV applications

Specifications:

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

Applications:

• Boats dual battery systems (starter + house)
• Sailboats navigation and lighting batteries
• Fishing boats trolling motor and accessory battery protection

The Bluewater Auto Charging Relay (ACR) Model 9800-7101-00 is designed to efficiently manage battery charging in various marine, RV, and automotive applications. With a continuous rating of 120 amps and intermittent support up to 140 amps, this relay ensures optimal power distribution while protecting your system. Its robust construction features an IP67 waterproof rating, making it suitable for harsh environments, including marine and outdoor use. The relay is ignition protected, providing added safety for sensitive electronics and critical components in your vehicle or vessel.
The ACR automatically connects batteries during charging and isolates them when voltage drops, preventing drain and ensuring reliable power management. It also includes Start Isolation (SI), which temporarily disconnects house loads during engine cranking to safeguard sensitive electronics, indicated by a slow-flashing yellow LED. Dual-color LEDs offer real-time status updates, displaying Fault, Charging, Discharging, Combine, SI, and Override modes for easy monitoring.
Supporting alternators up to 120A, the relay can handle large power loads with a 4/0 AWG cable size, suitable for dual battery systems such as starter and house batteries on boats, sailboats, and fishing vessels. An Under Voltage Lockout feature prevents the relay from closing when battery voltage drops below 9.5V for 12V systems or 19V for 24V systems, protecting your batteries from damage. The durable, waterproof design, combined with its versatile features, makes this relay an essential component for reliable power management in demanding environments.
Whether used for navigation, lighting, trolling motors, or accessory protection, the Bluewater Auto Charging Relay provides a dependable solution for maintaining optimal battery health and system performance in a compact, easy-to-install package.

Features:

• Automatic battery management connects batteries during charging and isolates them when voltage drops

• Start Isolation (SI) 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 120A

• Dual-color LEDs provide real-time battery status: 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)

• Durable design with IP67 waterproof rating, ignition protected, suitable for marine and RV applications