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Celebrating over 50 years of Trusted Marine Service
Over 50 years of Trusted Marine Service

Battery Isolators & ACRs

Intelligent battery management with s (ACRs) and battery isolators. Ensure proper charging of multiple battery banks while preventing discharge of critical starting batteries. Essential for vessels with house and engine battery systems.

Key features:

  • Automatic Charging Relays (ACRs)
  • Voltage-sensitive relays (VSRs)
  • Diode-based battery isolators
  • FET isolators for minimal voltage drop
  • Emergency parallel switches

All battery isolators and ACRs are marine-grade with sealed, corrosion-resistant construction designed for reliable automatic battery management in demanding marine environments.

Filters

Blue Sea Systems SI Series 7610 Automatic Charging Relay 120A 12/24V

Original price $262.59 - Original price $262.59
Original price
$262.59
$262.59 - $262.59
Current price $262.59
Item locally warehoused

The Blue Sea Systems SI Series 7610 is an automatic charging relay (ACR) that intelligently manages charging across two battery banks while isolati...

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Original price $262.59 - Original price $262.59
Original price
$262.59
$262.59 - $262.59
Current price $262.59

Blue Seas Systems 7611 Batterylink® ACR Automatic Charging Relay

Original price $215.92 - Original price $215.92
Original price
$215.92
$215.92 - $215.92
Current price $215.92
Item locally warehoused

Blue Sea Systems 7611 Batterylink® ACR Automatic Charging Relay (661-7611) is designed to automatically share a single source of charge between two...

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Original price $215.92 - Original price $215.92
Original price
$215.92
$215.92 - $215.92
Current price $215.92

M-ACR Automatic Charging Relay

Original price $182.59 - Original price $182.59
Original price
$182.59
$182.59 - $182.59
Current price $182.59
Item locally warehoused

The M-ACR Automatic Charging Relay automatically combines two battery banks during charging and isolates them during discharge or starting to help ...

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Original price $182.59 - Original price $182.59
Original price
$182.59
$182.59 - $182.59
Current price $182.59

Sea-Dog 4227901 Smart Dual Battery Isolator, 12V

Original price $109.23 - Original price $109.23
Original price
$109.23
$109.23 - $109.23
Current price $109.23
Item locally warehoused

Sea-Dog Smart Dual Battery Isolator (12V) is designed to help manage dual-battery charging while isolating batteries to protect the starting batter...

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Original price $109.23 - Original price $109.23
Original price
$109.23
$109.23 - $109.23
Current price $109.23

Cole Hersee 48090 Heavy Duty Battery Isolator, 90A

Original price $179.69 - Original price $179.69
Original price
$179.69
$179.69 - $179.69
Current price $179.69
Item locally warehoused

Cole Hersee 48090 heavy duty battery isolator helps manage DC negative ground battery systems by isolating each battery so charge from the higher-c...

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Original price $179.69 - Original price $179.69
Original price
$179.69
$179.69 - $179.69
Current price $179.69

ProMariner - Pro IsoCharge 3-Bank - 23125

Original price $636.99 - Original price $636.99
Original price
$636.99
$636.99 - $636.99
Current price $636.99
Item locally warehoused

The ProMariner ProIsoCharge 180-3 is an advanced digital battery isolator for 12V marine charging systems with one alternator input and three indep...

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Original price $636.99 - Original price $636.99
Original price
$636.99
$636.99 - $636.99
Current price $636.99

Blue Sea Systems 7623 ML Series Automatic Charging Relay, 24V w/Manual Override

Original price $491.22 - Original price $491.22
Original price
$491.22
$491.22 - $491.22
Current price $491.22
Item locally warehoused

Overview Blue Sea Systems 7623 ML Series Automatic Charging Relay, 24V w/Manual Override. A dual-battery management relay that automatically ties b...

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Original price $491.22 - Original price $491.22
Original price
$491.22
$491.22 - $491.22
Current price $491.22

Blue Sea Systems 7622 ML Series Automatic Charging Relay, 12V w/Manual Override

Original price $597.29 - Original price $597.29
Original price
$597.29
$597.29 - $597.29
Current price $597.29
Item locally warehoused

Overview ML Series Automatic Charging Relay (12V) automatically combines batteries during charging and isolates them during discharging and engine ...

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Original price $597.29 - Original price $597.29
Original price
$597.29
$597.29 - $597.29
Current price $597.29

Battery Mate Battery Isolator, 160A, 2 Bank

Original price $705.79 - Original price $705.79
Original price
$705.79
$705.79 - $705.79
Current price $705.79
Item locally warehoused

The Battery Mate is the ultimate solution for charging several batteries simultaneously and is compatible with any type of alternator/battery charg...

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Original price $705.79 - Original price $705.79
Original price
$705.79
$705.79 - $705.79
Current price $705.79

ProMariner - Battery Isolator - 21302

Original price $642.58 - Original price $642.58
Original price
$642.58
$642.58 - $642.58
Current price $642.58
Item locally warehoused

The ProMariner 2-130-2 Multi-Battery Isolator is a solid-state DC charging isolator for marine electrical systems with two alternator inputs and tw...

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Original price $642.58 - Original price $642.58
Original price
$642.58
$642.58 - $642.58
Current price $642.58

ProMariner Battery Isolator

Original price $435.20 - Original price $435.20
Original price
$435.20
$435.20 - $435.20
Current price $435.20
Item locally warehoused

Overview Battery isolator designed to charge multiple battery banks from a single DC source while keeping banks separate. Supports 6, 12, 24 and 32...

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Original price $435.20 - Original price $435.20
Original price
$435.20
$435.20 - $435.20
Current price $435.20