Sure Power: Multi-Battery Isolator - 120 Amp ∼ 1 Input; 2 Output

In stock

Sure Power Battery Isolator
Part #: 1202

Sure Power Multi-Battery Isolators are the original Battery Isolator, and still the best on the market. Multi-Battery Isolators are used to eliminate multi-battery drain when two or more battery banks are in a charging system. They perform as well or battery then existing factory installed components. Specifically designed to exceed OEM Specifications, they are equipped with Solid-State Electronics, which isolate each battery circuit and allows each battery to discharge and charge according to its' own needs. They are more efficient and reliable then mechanical or solenoid systems, and have the reputation as the most comprehensive line of Battery Isolators on the market.

For optimum system performance it is recommended that a battery labeled "Deep Cycle" be used in the auxiliary position.


  • Charging Inputs: 1
  • Battery Outputs: 2
  • Current Rating: 120 Amps
  • Approx. Item Weight: 3 pounds

  • Vehicle Application Group: 1
  • Length: 9"
  • Width (base): 4.5"
  • Height: 2.5"
  • Height (w/posts): 3.375"
    Clicking one of the following links will open a new window for viewing the document.
  • Sure Power Isolator Application & Installation
    Isolator Application and Instruction is relevant to all sizes and types.

  • Sure Power Marine Isolator Instructions
  • Addendum: Ford alternators with 2 plug-in connections (1985+)
  • Sure Power : Intro to batteries and charging
  • Sure Power Multi-Battery Isolators are designed for the alternator systems with negative ground, and batteries of the same nominal voltage. Batteries of differing voltages cannot be used. For positive ground systems, marine outboard systems, or heavy-duty truck systems contact Sure Power's technical support for the proper isolator for your specialized application.


    General Motors (Delcotron/Delphi):
    except Delcotron/Delphi CS series alternators (CS used on most 1985 and newer GM vehicles.)

    Ford vehicles:
    Up to Year 1998

    All models all years including Nippondenso externally alternators.

    Equipped with Nippondenso series regulated alternators.

    Japanese Imports:
    With alternators using external voltage regulator external sensing.

    Load Handler Series or BEM Remote Sense Series.

    Manufacturer Profile:
    Sure Power Industries provides a wide variety of quality products and engineering services designed to aid in the management of DC electrical systems. Since inventing the Battery Isolator in 1959, Sure Power has been designing and manufacturing innovative, reliable and cost competitive products and services for a wide variety of markets including off-highway, bus, and truck, marine and automotive.

    Click here to view all products by Sure Power Industries

    More Information
    Write Your Own Review
    Shipping tab