Batterylink™ Automatic Charging Relay – 12v/24V DC 120A

BatteryLink™ ACR Relay 120A – 12V / 24V

The BatteryLink™ Automatic Charging Relay (ACR) is designed to automatically manage and distribute charging between your primary and auxiliary battery systems. Ideal for caravans, 4WDs, marine, and off-grid applications, it ensures both batteries are efficiently charged from a single power source.

This smart relay detects charging conditions and automatically connects or isolates battery banks, helping to protect your starter battery while maximising auxiliary battery usage.

Key Features

• Automatic Charging Relay – Shares charge between start and auxiliary batteries
• Dual Voltage Compatibility – Supports both 12V and 24V DC systems
• 120A Continuous Rating – Handles high-current charging applications
• 210A Intermittent Rating – Supports short bursts up to 5 minutes
• Smart Voltage Detection – Automatically combines and isolates batteries
• Durable Design – Clip-on insulating cover and flexible cable entry points
• Integrated LED Indicator – Displays relay status
• Auxiliary Battery Priority – Optional feature for extended auxiliary usage

Specifications

• Nominal Voltage: 12V / 24V DC (auto-ranging)
• Continuous Rating: 120 A
• Intermittent Rating: 210 A (5 minutes)
• Operating Current: 175 mA @ 12V (combine), 115 mA @ 24V (combine), 15 mA (open)
• Maximum Cable Size: 1/0 AWG
• Terminal Stud Size: 3/8″ (M10)
• Maximum Torque: 15.82 Nm
• Stud Length: 22 mm (7/8″)
• Weight: 0.57 kg

Voltage Thresholds

• Combine (30 sec): 13.6V (12V) / 27.2V (24V)
• Combine (2 min): 13.0V (12V) / 26.0V (24V)
• Open Low: 12.75V (12V) / 25.5V (24V)
• Auxiliary Priority Open: 12.25V (12V) / 24.5V (24V)
• Over Voltage Lockout: 16.0V (12V) / 32.0V (24V)

Design & Installation Features

• Side and bottom knockouts for flexible cable routing
• Clip-on insulating cover for safety
• Quick-connect terminals for ground and optional features
• Integrated LED for real-time status indication
• Supports multiple cable terminals on extended studs

Optional Features

• Auxiliary Battery Priority for extended auxiliary usage
• Remote LED indicator (requires optional LED)

The BatteryLink™ ACR Relay 120A is a smart and reliable solution for managing dual battery systems, ensuring efficient charging and protecting your power setup in demanding environments.