Skip to content
Gift Cards About Us Contact Boating Life Blog Clearance
Ships Same Day

Orders before 3pm EST*

Price Guarantee

We won't be beaten

Expert Support

Experts via live chat 24/7

Free Shipping

When you spend $99+*

Marine Battery Isolators

Filters

$
$
  • Save 15% Save %

    Victron Galvanic Isolator VDI-32A 32A Max Waterproof (Potted) [GDI000032000]

    Victron Energy
    $293.00
    $293.00 - $293.00
    $293.00
    $249.05
    $249.05 - $249.05
    $249.05

    Galvonic Isolator VDI-32A 32A Max Waterproof (Potted)The galvanic isolator prevents electrolytic corrosion. It blocks low voltage DC currents that...

    View full details
    $293.00
    $293.00 - $293.00
    $293.00
    $249.05
    $249.05 - $249.05
    $249.05
    Save 15% Save %

  • ProMariner Battery Isolator - 130 AMP - 1 Alternator - 2 Battery [11132]

    ProMariner
    $224.24 - $224.24
    $224.24
    $224.24 - $224.24
    $224.24

    Battery Isolator - 1 Alternator - 2 Battery - 130 AMPProMariner Battery Isolators with gold-plated terminals and improved efficiency, provide enha...

    View full details
    $224.24 - $224.24
    $224.24
    $224.24 - $224.24
    $224.24

  • ProMariner Battery Isolator - 130 AMP - 1 Alternator - 3 Battery [11133]

    ProMariner
    $293.24 - $293.24
    $293.24
    $293.24 - $293.24
    $293.24

    Battery Isolator - 1 Alternator - 3 Battery - 130 AMPProMariner Battery Isolators with gold-plated terminals and improved efficiency, provide enha...

    View full details
    $293.24 - $293.24
    $293.24
    $293.24 - $293.24
    $293.24

  • ProMariner ProSafe FAILSAFE 60amp Galvanic Isolator [22074]

    ProMariner
    $595.99 - $595.99
    $595.99
    $595.99 - $595.99
    $595.99

    ProSafe FAILSAFE 60amp Galvanic IsolatorProSafe FS installs easily and does not require a dedicated monitor to verify the operational status of th...

    View full details
    $595.99 - $595.99
    $595.99
    $595.99 - $595.99
    $595.99

  • ProMariner Battery Isolator - 1 Alternator - 2 Battery - 70 AMP [11072]

    ProMariner
    $160.99 - $160.99
    $160.99
    $160.99 - $160.99
    $160.99

    Battery Isolator - 1 Alternator - 2 Battery - 70 AMPProMariner Battery Isolators with gold-plated terminals and improved efficiency, provide enhan...

    View full details
    $160.99 - $160.99
    $160.99
    $160.99 - $160.99
    $160.99
  • Save 15% Save %

    Victron Argo FET Battery Isolator 200-3 3 Batteries - 200AMP [ARG200301020]

    Victron Energy
    $165.00
    $165.00 - $165.00
    $165.00
    $140.25
    $140.25 - $140.25
    $140.25

    Argo FET Battery Isolator 200-3 3 Batteries - 200AMPSimilarly to diode battery isolators, FET isolators allow simultaneous charging of two or more...

    View full details
    $165.00
    $165.00 - $165.00
    $165.00
    $140.25
    $140.25 - $140.25
    $140.25
    Save 15% Save %

  • ProMariner ProIsoCharge Battery Isolator 130Amp 2-Alt 4-Bat - 12V [23127]

    ProMariner
    $444.99 - $444.99
    $444.99
    $444.99 - $444.99
    $444.99

    ProIsoCharge SeriesModel ProIsoCharge130 2•4 Part No. 23127 System Volts DC 12Max DC Amps 130 AmpAlternator Input2Battery Outputs 4Size12.05"(l) ...

    View full details
    $444.99 - $444.99
    $444.99
    $444.99 - $444.99
    $444.99

  • Newmar 1-3-70 Battery Isolator [1-3-70]

    Newmar Power
    $240.00 - $240.00
    $240.00
    $240.00 - $240.00
    $240.00

    1-3-70 Battery IsolatorThis heavy-duty isolator allows charging multiple batteries automatically from one or two alternators and prevents the disc...

    View full details
    $240.00 - $240.00
    $240.00
    $240.00 - $240.00
    $240.00

  • Mastervolt Battery Mate 2503 IG Isolator - 200 Amp, 3 Bank [83125035]

    Mastervolt
    $531.66 - $531.66
    $531.66
    $531.66 - $531.66
    $531.66

    Battery Mate 2503 IG Isolator - 200 Amp, 3 BankThe Battery Mate is the ultimate solution for charging several batteries simultaneously and is comp...

    View full details
    $531.66 - $531.66
    $531.66
    $531.66 - $531.66
    $531.66

  • ProMariner ProSafe FAILSAFE 30amp Galvanic Isolator [22034]

    ProMariner
    $446.99 - $446.99
    $446.99
    $446.99 - $446.99
    $446.99

    ProSafe FAILSAFE 30amp Galvanic IsolatorProSafe FS installs easily and does not require a dedicated monitor to verify the operational status of th...

    View full details
    $446.99 - $446.99
    $446.99
    $446.99 - $446.99
    $446.99

  • Newmar 2-3-120 Battery Isolator [2-3-120]

    Newmar Power
    $554.00 - $554.00
    $554.00
    $554.00 - $554.00
    $554.00

    2-3-120 Battery IsolatorThis heavy-duty isolator allows charging multiple batteries automatically from one or two alternators and prevents the dis...

    View full details
    $554.00 - $554.00
    $554.00
    $554.00 - $554.00
    $554.00

  • ProMariner ProIsoCharge Battery Isolator 120Amp 1-Alt 2-Bat - 12V [23121]

    ProMariner
    $224.99 - $224.99
    $224.99
    $224.99 - $224.99
    $224.99

    ProIsoCharge SeriesModelProIsoCharge120 1•2 Part No. 23121System Volts DC 12Max DC Amps 120 AmpAlternator Input1Battery Outputs 2Size 5.35"(...

    View full details
    $224.99 - $224.99
    $224.99
    $224.99 - $224.99
    $224.99

  • ProMariner Battery Isolator - 70 Amp - 1 Alternator - 3 Battery [01-70-3]

    ProMariner
    $163.99 - $163.99
    $163.99
    $163.99 - $163.99
    $163.99

    Battery IsolatorMax Current: 70 AmpConfiguration: 1 alt., 3 batt.ProMariner Battery Isolator, with gold-plated terminals and improved efficiency, ...

    View full details
    $163.99 - $163.99
    $163.99
    $163.99 - $163.99
    $163.99
  • Save 15% Save %

    Victron Argo FET Battery Isolator - 100AMP - 2 Batteries [ARG100201020]

    Victron Energy
    $118.00
    $118.00 - $118.00
    $118.00
    $100.30
    $100.30 - $100.30
    $100.30

    Argo FET Battery Isolator - 100AMP - 2 BatteriesSimilarly to diode battery isolators, FET isolators allow simultaneous charging of two or more bat...

    View full details
    $118.00
    $118.00 - $118.00
    $118.00
    $100.30
    $100.30 - $100.30
    $100.30
    Save 15% Save %
  • Save 15% Save %

    Victron Argo Diode Battery Isolator - 160AMP - 2 Batteries [ARG160201020]

    Victron Energy
    $106.00
    $106.00 - $106.00
    $106.00
    $90.10
    $90.10 - $90.10
    $90.10

    Argo Diode Battery Isolator - 160AMP - 2 BatteriesDiode battery isolators allow simultaneous charging of two or more batteries from one alternator...

    View full details
    $106.00
    $106.00 - $106.00
    $106.00
    $90.10
    $90.10 - $90.10
    $90.10
    Save 15% Save %

  • Newmar GI-30-FS Galvanic Isolator 30A Fail Safe [GI-30-FS]

    Newmar Power
    $417.50 - $417.50
    $417.50
    $417.50 - $417.50
    $417.50

    GI-30-FS Galvanic Isolator 30A Fail SafeInstalling the Galvanic Isolator between the AC safety ground and DC bonding system blocks most of the low...

    View full details
    $417.50 - $417.50
    $417.50
    $417.50 - $417.50
    $417.50

  • Newmar 2-3-70 Battery Isolator [2-3-70]

    Newmar Power
    $310.00 - $310.00
    $310.00
    $310.00 - $310.00
    $310.00

    2-3-70 Battery IsolatorThis heavy-duty isolator allows charging multiple batteries automatically from one or two alternators and prevents the disc...

    View full details
    $310.00 - $310.00
    $310.00
    $310.00 - $310.00
    $310.00

  • Newmar GI-60-FS Galvanic Isolator 60A Fail Safe [GI-60-FS]

    Newmar Power
    $559.50 - $559.50
    $559.50
    $559.50 - $559.50
    $559.50

    GI-60-FS Galvanic Isolator 60A Fail SafeInstalling the Galvanic Isolator between the AC safety ground and DC bonding system blocks most of the low...

    View full details
    $559.50 - $559.50
    $559.50
    $559.50 - $559.50
    $559.50

  • ProMariner ProIsoCharge Battery Isolator 180Amp 1-Alt 3-Bat - 12V [23125]

    ProMariner
    $308.99 - $308.99
    $308.99
    $308.99 - $308.99
    $308.99

    ProIsoCharge SeriesModel ProIsoCharge180 1•3 Part No. 23125 System Volts DC 12Max DC Amps 180 AmpAlternator Input1Battery Outputs 3Size 7.55"(l) ...

    View full details
    $308.99 - $308.99
    $308.99
    $308.99 - $308.99
    $308.99
  • Save 15% Save %

    Victron Argo FET Battery Isolator - 200AMP - 2 Batteries [ARG200201020R]

    Victron Energy
    $141.00
    $141.00 - $141.00
    $141.00
    $119.85
    $119.85 - $119.85
    $119.85

    Argo FET Battery Isolator - 200AMP - 2 BatteriesSimilarly to diode battery isolators, FET isolators allow simultaneous charging of two or more bat...

    View full details
    $141.00
    $141.00 - $141.00
    $141.00
    $119.85
    $119.85 - $119.85
    $119.85
    Save 15% Save %

  • ProMariner ProIsoCharge Battery Isolator 250Amp 1-Alt 2-Bat - 12V [23123]

    ProMariner
    $291.99 - $291.99
    $291.99
    $291.99 - $291.99
    $291.99

    ProIsoCharge SeriesModel ProIsoCharge250 1•3 Part No. 23123 System Volts DC 12Max DC Amps 250 AmpAlternator Input1Battery Outputs 2Size 6.95"(l) ...

    View full details
    $291.99 - $291.99
    $291.99
    $291.99 - $291.99
    $291.99
  • Save 15% Save %

    Victron Argofet Battery Isolator 100-3 3 Batteries - 100AMP [ARG100301020R]

    Victron Energy
    $135.00
    $135.00 - $135.00
    $135.00
    $114.75
    $114.75 - $114.75
    $114.75

    Argofet Battery Isolator 100-3 3 Batteries - 100AMPSimilarly to Argodiode battery isolators, Argofet isolators allow simultaneous charging of two ...

    View full details
    $135.00
    $135.00 - $135.00
    $135.00
    $114.75
    $114.75 - $114.75
    $114.75
    Save 15% Save %

  • Mastervolt Battery Mate 1603 IG Isolator - 120A, 3 Bank [83116035]

    Mastervolt
    $492.60 - $492.60
    $492.60
    $492.60 - $492.60
    $492.60

    Battery Mate 1603 IG Isolator - 120 Amp, 3 BankThe Battery Mate is the ultimate solution for charging several batteries simultaneously and is comp...

    View full details
    $492.60 - $492.60
    $492.60
    $492.60 - $492.60
    $492.60
  • Save 15% Save %

    Victron Galvanic Isolator VDI-16A, 16 AMP Max Waterproof Potted [GDI000016000]

    Victron Energy
    $129.00
    $129.00 - $129.00
    $129.00
    $109.65
    $109.65 - $109.65
    $109.65

    Galvanic Isolator VDI-16A, 16 AMP Max Waterproof PottedThe galvanic isolator prevents electrolytic corrosion. It blocks low-voltage DC currents th...

    View full details
    $129.00
    $129.00 - $129.00
    $129.00
    $109.65
    $109.65 - $109.65
    $109.65
    Save 15% Save %