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Battery Isolators

When setting up a single engine boat with dual batteries an isolator will automatically provide consistent service for both batteries from your engine.  No more manual switching.


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Arco Battery Isolator BI-0702

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Regular Price: $85.99
 On Sale For: $64.50 
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Arco Battery Isolator BI-1202

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Regular Price: $146.99
 On Sale For: $111.09 
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Arco Battery Isolator BI-3202

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Regular Price: $329.99
 On Sale For: $249.55 
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ProMariner ProIsoCharge Battery Isolator 120Amp 1-Alt 2-Bat - 12V #23121

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Regular Price: $213.79
 On Sale For: $159.99 
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Featured Products

ProMariner ProIsoCharge Battery Isolator 120Amp 1-Alt 3-Bat - 12V #23124

ProIsoCharge SeriesModel ProIsoCharge120 1•3 Part No. 23124 System Volts DC 12Max DC Amps 120 AmpAlternator Input1Battery Outputs 3Size 6.15"(l) x 5.875"(w) x 3.125"(h)Weight3 lbsSignificantly Smarter...ProIsoCharge delivers digitally controlled alternator output distribution while protecting.... learn more

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25Regular Price: $227.09
On Sale For: $169.99
You Save $57.10 

ProMariner ProIsoCharge Battery Isolator 250Amp 1-Alt 2-Bat - 12V #23123

ProIsoCharge SeriesModel ProIsoCharge250 1•3 Part No. 23123 System Volts DC 12Max DC Amps 250 AmpAlternator Input1Battery Outputs 2Size 6.95"(l) x 5.875"(w) x 3.125"(h)Weight4 lbsSignificantly Smarter...ProIsoCharge delivers digitally controlled alternator output distribution while protecting.... learn more

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25Regular Price: $280.29
On Sale For: $209.99
You Save $70.30 

Guest-Marinco-Guest 2501 Isolator #2501

" Optimized heat sink design for maximum performance Minimized voltage drop across isolation barrier using Schottky type diodes Each output individually capable of carrying the full alternator load Fixed cable posts for secure connections Fully potted, marine grade construction Waterproof component.... learn more

Usually Ships in 3-7 Days

25Regular Price: $82.99
On Sale For: $62.63
You Save $20.36 

Guest 30A Fail Safe Galvanic Isolator #4531001

Product Features: Prevents the electroplating action that occurs on boats with AC power feeds Voltage Rating: 115/230VAC Frequency Rating: 50/60Hz Current Rating: 30A at 50 deg. C Operating Temp: -20 to 50 deg. C Continuous Amps: 30 Amps Operation: 115/230VAC/50-60Hz Dimensions: 7-3/4'W x 5'L x 2-1.... learn more

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24Regular Price: $380.99
On Sale For: $287.85
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ProMariner ProSafe One 30 Amp Galvonic Isolator #22033

ProSafe Galvonic IsolationInterrupts galvanic circuit with other boats and the dock when your boat is plugged into a shore power system. Maintains AC safety ground and solves the most common cause of corrosion. Protects against zinc loss. U.L. tested to the new ABYC A-28 recommendation, effectiv.... learn more

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24Regular Price: $222.99
On Sale For: $168.50
You Save $54.49 

Guest 50/60A Fail Safe Galvanic Isolator #4531011

Product Features: Voltage Rating: 115/230VAC Passes necessary AC ground current for shore power safety Frequency Rating: 50/60Hz Current Rating: 50/60A at 50 deg. C Operating Temp: -20 to 50 deg. CGuest Galvanic Isolators protect your boat from galvanic corrosion and metal loss that can cost thousa.... learn more

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26Regular Price: $457.99
On Sale For: $338.84
You Save $119.15 

Arco Battery Isolator BI-1202-3A

BATTERY ISOLATOR BI-1202-3A.... learn more

Usually Ships in 3-7 Days

24Regular Price: $173.99
On Sale For: $132.17
You Save $41.82 

Arco Battery Isolator BI-3203

BATTERY ISOLATOR BI-3203.... learn more

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24Regular Price: $398.99
On Sale For: $301.71
You Save $97.28 

Arco Battery Isolator BI-0703

INBOARD BATTERY ISOLATORSARCO INBOARD BATTERY ISOLATORSBattery isolators are solid-state devices that allow electrical current to flow in one direction only, thus permitting the alternator to be connected directly to 2 batteries without fear of 1 higher charged battery discharging into the lower ch.... learn more

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24Regular Price: $120.99
On Sale For: $91.92
You Save $29.07 

Arco Battery Isolator BI-2703-4

BATTERY ISOLATOR BI-2703-4.... learn more

Usually Ships in 3-7 Days

24Regular Price: $248.99
On Sale For: $188.07
You Save $60.92 

Arco Battery Isolator BI-0702-4

BATTERY ISOLATOR BI-0702-4.... learn more

Usually Ships in 3-7 Days

24Regular Price: $108.99
On Sale For: $82.33
You Save $26.66 

Arco Battery Isolator BI-2702

BATTERY ISOLATOR BI-2702.... learn more

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24Regular Price: $183.99
On Sale For: $140.01
You Save $43.98 

Arco Battery Isolator BI-1203-3A

BATTERY ISOLATOR BI-1203-3A.... learn more

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24Regular Price: $223.99
On Sale For: $169.19
You Save $54.80 

Arco Battery Isolator BI-2703

BATTERY ISOLATOR BI-2703.... learn more

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25Regular Price: $226.99
On Sale For: $171.30
You Save $55.69 

Arco Battery Isolator BI-1203

BATTERY ISOLATOR BI-1203.... learn more

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25Regular Price: $187.99
On Sale For: $141.49
You Save $46.50 

Arco Battery Isolator BI-1602

BATTERY ISOLATOR BI-1602.... learn more

Usually Ships in 3-7 Days

25Regular Price: $194.99
On Sale For: $147.08
You Save $47.91 


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