BatteryLink Automatic Charging Relay, 120A 12V/24VDC


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Model # 16934085 | Mfg # 7611 | UPC # 632085076115

Automatically combines batteries during charging and isolates batteries when discharging.

Blue Sea's BatteryLink™ Automatic Charging Relay (ACR) automatically shares a single source of charge with an auxiliary battery and senses charging on two battery banks. Designed for alternators up to 120A, an ACR has one thnth the volatge drop of a battery isolator, resulting in a 60 percent higher charge rate.

Key Features

  • Dual sensing to manage multiple charge sources
  • Robust, fully sealed assembly for reliability in environments with vibration and moisture
  • Clip-on cover insulates terminal connections
  • Side and bottom knockouts for cable connections
  • Clip-on cover insulates terminal connections
  • Integrated LED indicates ACR status
  • 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)


  • Continuous Rating: 120A; Intermittent Rating (5 minutes): 210A
  • Voltage Input: 12/24V DC
  • Stud Length: 7/8" (22 mm) to accept multiple cable terminals
  • Terminal Size: 1/4" × .032" male quick connect terminals for ground and optional features
  • Maximum Cable Size: 1 / 0 AWG
  • Combine Voltage: 13.6V (30 sec.); 13.0V (2 min.)
  • Open Low (30 sec.): 12.75V
  • Compatibility: Largest battery bank cannot exceed Group 27 
 WARNING: Cancer and Reproductive Harm -


BatteryLink Automatic Charging Relay, 120A 12V/24VDC

Name Value
Amperage 210 Amps Intermittent
120 Amps DC Continuous
Best Use Continuous Duty
Type Relay
Voltage 12/24 Volts DC


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To receive your order by December 24th, 2018, please reference the 2018 Holiday Shipping Schedule.

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