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



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

Automatically shares single source of charge with Auxiliary Battery Features

  • 120 Amp continuous rating
  • 12/24V DC auto ranging voltage input
  • Senses charging on two battery banks
  • Side and bottom knockouts for cable connections
  • Clip-on cover insulates terminal connections
  • 7∕8″ (22 mm) stud length to accept multiple cable terminals
  • Integrated LED indicates ACR status
  • 1∕4″ × .032″ male quick connect terminals for ground and optional features
  • Largest battery bank cannot exceed Group 27

Optional Features

  • Optional Auxiliary Battery Priority connection shares the alternator charge with the Auxiliary battery longer when the engine is running to allow the use of auxiliary loads for an extended period of time
  • Remote LED remotely indicates ACR states – requires optional LED


BatteryLink™ Automatic Charging Relay – 12V/24V DC 120A
Nominal Voltage12V DC
24V DC
Auxiliary Battery PriorityYes
Amperage Operating Current175mA @ 12V (Combine)
115mA @ 24V (Combine)
15mA (Open)
Continuous Rating120A
Intermittent Rating210A (5 min)
Maximum Cable Size1/0 AWG
Maximum Torque140 in-lb (15.82 Nm)
Terminal Stud Size3/8″ – 16 (M10)
Relay Contact Position
Combine 30 sec13.6V @ 12V
27.2V @ 24V
Combine 2 Min13.0V @ 12V DC
26.0V @ 24V DC
Over Voltage Lockout16.0V @ 12 V
32.0V @ 24 V
Open Low12.75V @ 12 V
25.5V @ 24 V
Auxiliary Priority
Open Low12.25V @ 12V
24.5V @ 24V
Weight0.57 kg

Note: Specifications subject to change without notice.

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