10% Off Your First Purchase!

Get 10% off on your first purchase by entering the promo code at the checkout!

SPRING10
Bluewater  |  SKU: IM-111083

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

Regular price $77.91


Professional Insight

This product is offered through Inlet Marine Supply as part of our marine electrical catalog. Always verify compatibility with your vessel’s electrical system prior to purchase.

Professional installation is recommended to ensure safety, proper integration, and long-term reliability.

Need help installing this product?

Our service division, Inlet Marine Electric, provides professional marine electrical installation, upgrades, and troubleshooting in South Florida.

Schedule Installation

Description

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
  • Box Dimensions: 3"H x 6"W x 9"L WT: 0.85 lbs
  • UPC: 810196331235

Quick Guide (pdf)

Payment & Security

Payment methods

  • PayPal
  • Venmo

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.