Bluewater Auto Charging Relay 12V, 140 AMP [9800-7101-00]

$77.91
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Delivery and Shipping

Non-Oversized Items

  • Standard (2-8 days) $9.95 to contiguous 48 states
  • 2-Day (2-3 days) $19.95 to contiguous 48 states
  • Overnight (1-2 days) $49.95 to contiguous 48 states

Oversized Items

  • UPS Ground (2-8 days) $95.00 to contiguous 48 states

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 120 A
  • 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

Specifications:

  • Continuous Amperage: 120

Quick Guide (pdf)