Protect and optimize your onboard power with marine battery isolators built for dependable energy management. This collection includes high-performance isolators that allow multiple battery banks to charge simultaneously from a single power source—while keeping them electrically isolated to prevent backflow and discharge. Perfect for dual battery setups, house and starter bank separation, or auxiliary power systems, these isolators ensure your critical circuits stay powered when you need them most. Designed for the marine environment with corrosion-resistant materials and robust construction, they're a smart upgrade for safer, more efficient power distribution on board.
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Vendor:ProMariner
ProMariner Battery Isolator - 1 Alternator - 2 Battery - 70 AMP [11072]
Regular price $96.95 USDRegular price$176.99 USD-$80.04 USD Sale price $96.95 USD -
Vendor:Newmar Power
Newmar GI-60-FS Galvanic Isolator 60A Fail Safe [GI-60-FS]
Regular price $334.95 USDRegular price$425.10 USD-$90.15 USD Sale price $334.95 USD -
Vendor:ProMariner
ProMariner Battery Isolator - 130 AMP - 1 Alternator - 2 Battery [11132]
Regular price $135.95 USDRegular price$248.99 USD-$113.04 USD Sale price $135.95 USD -
Vendor:ProMariner
ProMariner Battery Isolator - 2 Alternator - 3 Battery - 70 AMP [12073]
Regular price $207.95 USDRegular price$380.99 USD-$173.04 USD Sale price $207.95 USD -
Vendor:Victron Energy
Victron Galvanic Isolator VDI-32A 32A Max Waterproof (Potted) [GDI000032000]
Regular price $249.05 USDRegular price$293.00 USD-$43.95 USD Sale price $249.05 USD -
Vendor:ProMariner
ProMariner ProIsoCharge Battery Isolator 180Amp 1-Alt 2-Bat - 12V [23122]
Regular price $157.95 USDRegular price$289.99 USD-$132.04 USD Sale price $157.95 USD -
Vendor:ProMariner
ProMariner ProIsoCharge Battery Isolator 250Amp 1-Alt 2-Bat - 12V [23123]
Regular price $179.95 USDRegular price$327.99 USD-$148.04 USD Sale price $179.95 USD -
Vendor:Mastervolt
Mastervolt Battery Mate 2503 IG Isolator - 200 Amp, 3 Bank [83125035]
Regular price $443.95 USDRegular price$793.99 USD-$350.04 USD Sale price $443.95 USD -
Vendor:Newmar Power
Newmar GI-30-FS Galvanic Isolator 30A Fail Safe [GI-30-FS]
Regular price $254.95 USDRegular price$323.37 USD-$68.42 USD Sale price $254.95 USD -
Vendor:Mastervolt
Mastervolt Battery Mate 1602 IG Isolator - 120 Amp, 2 Bank [83116025]
Regular price $366.95 USDRegular price$656.99 USD-$290.04 USD Sale price $366.95 USD -
Vendor:Victron Energy
Victron ArgoFET 200-2 Battery Isolator - 200AMP - 1 Alternator, 2 Batteries [ARG200201020R]
Regular price $119.85 USDRegular price$141.00 USD-$21.15 USD Sale price $119.85 USD -
Vendor:ProMariner
ProMariner ProSafe FAILSAFE 30amp Galvanic Isolator [22034]
Regular price $298.95 USDRegular price$570.99 USD-$272.04 USD Sale price $298.95 USD -
Vendor:ProMariner
ProMariner Battery Isolator - 130 AMP - 2 Alternator - 3 Battery [12133]
Regular price $403.95 USDRegular price$739.99 USD-$336.04 USD Sale price $403.95 USD -
Vendor:Newmar Power
Newmar 1-3-165 Battery Isolator [1-3-165]
Regular price $349.95 USDRegular price$460.09 USD-$110.14 USD Sale price $349.95 USD -
Vendor:ARCO Marine
ARCO Marine BI-1202 Battery Isolator - 120A - 1 Alternator, 2 Battery [BI-1202]
Regular price $119.95 USDRegular price$175.38 USD-$55.43 USD Sale price $119.95 USD -
Vendor:ARCO Marine
ARCO Marine BI-1602 Battery Isolator - 160A - 1 Alternator, 2 Battery [BI-1602]
Regular price $149.95 USDRegular price$221.61 USD-$71.66 USD Sale price $149.95 USD