Battery Isolators

Separate your battery banks. Manage your power with confidence.

Shop marine battery isolators, dual-battery isolators, multi-bank isolators, charging isolators and related battery-management accessories for sailboats, powerboats, yachts and other marine electrical systems.

Separate. Protect. Stay powered.

34 products

  • ProMariner Battery Isolator 130 AMP 2 Alternator 3 Battery 12133
    ProMariner Battery Isolator 130 AMP 2 Alternator 3 Battery 12133
    Save $220.00 USD
    ProMariner

    ProMariner Battery Isolator - 130 AMP - 2 Alternator - 3 Battery [12133]

    $438.99 USD
    $438.99 USD $658.99 USD

    Battery Isolator - 2 Alternator - 3 Battery - 130 AMPProMariner Battery Isolators with gold-plated terminals and improved efficiency, provide enhanced charging. Rated for use with...
  • ProMariner Battery Isolator 1 Alternator 2 Battery 70 AMP 11072
    ProMariner Battery Isolator 1 Alternator 2 Battery 70 AMP 11072
    Save $37.00 USD
    ProMariner

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

    $121.99 USD
    $121.99 USD $158.99 USD

    Battery Isolator - 1 Alternator - 2 Battery - 70 AMPProMariner Battery Isolators with gold-plated terminals and improved efficiency, provide enhanced charging. Rated for use with...
  • Newmar GI30FS Galvanic Isolator 30A Fail Safe GI30FS
    Newmar GI30FS Galvanic Isolator 30A Fail Safe GI30FS
    Save $3.01 USD
    Newmar Power

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

    $320.99 USD
    $320.99 USD $324.00 USD

    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-voltage currents and corrosive...
  • Newmar 1370 Battery Isolator 1370
    Newmar 1370 Battery Isolator 1370
    Save $45.01 USD
    Newmar Power

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

    $237.99 USD
    $237.99 USD $283.00 USD

    1-3-70 Battery IsolatorThis heavy-duty isolator allows charging multiple batteries automatically from one or two alternators and prevents the discharge or ‘dumping” of one battery into another....
  • Newmar 23120 Battery Isolator 23120
    Newmar 23120 Battery Isolator 23120
    Save $55.01 USD
    Newmar Power

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

    $597.99 USD
    $597.99 USD $653.00 USD

    2-3-120 Battery IsolatorThis heavy-duty isolator allows charging multiple batteries automatically from one or two alternators and prevents the discharge or ‘dumping” of one battery into another....
  • ProMariner Battery Isolator 2 Alternator 2 Battery 70 AMP 12072
    ProMariner Battery Isolator 2 Alternator 2 Battery 70 AMP 12072
    Save $63.00 USD
    ProMariner

    ProMariner Battery Isolator - 2 Alternator - 2 Battery - 70 AMP [12072]

    $209.99 USD
    $209.99 USD $272.99 USD

    Battery Isolator - 2 Alternator - 2 Battery - 70 AMPProMariner Battery Isolators with gold-plated terminals and improved efficiency, provide enhanced charging. Rated for use with...
  • Newmar 12120 Battery Isolator 12120
    Newmar 12120 Battery Isolator 12120
    Save $3.01 USD
    Newmar Power

    Newmar 1-2-120 Battery Isolator [1-2-120]

    $251.99 USD
    $251.99 USD $255.00 USD

    1-2-120 Battery IsolatorThis heavy-duty isolator allows multiple batteries to charge automatically from one or two alternators and prevents the discharge or ‘dumping” of one battery into...
  • Newmar GI60FS Galvanic Isolator 60A Fail Safe GI60FS
    Newmar GI60FS Galvanic Isolator 60A Fail Safe GI60FS
    Save $35.01 USD
    Newmar Power

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

    $390.99 USD
    $390.99 USD $426.00 USD

    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-voltage currents and corrosive...
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