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Battery Doctor Battery Isolator, 150A

Charge two batteries from a single alternator
Item #: BD92
International Shipping
Manuf. Part #: 20092
Weight (lbs): 1.1
Amps: 150
Price: $94.99
Quantity:  BUY NOW
In stock! Usually ships within 1 business day.

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  • Keeps starting battery isolated from second battery
  • Electronic switching control technology
  • Over-current and surge protected for vehicle with electronic systems
  • Priority charging and manual override for starting the battery

This innovative Battery Isolator controller packs a lot of power but is smaller and lighter than other battery isolators. A single push of the override/reset button allows you to change batteries to parallel mode for jump starting. Water resistant and suitable for marine use. Automatically charges auxiliary battery. Inlcudes mounting bracket. Imported.


by PowerReviews
Battery Doctor Battery Isolators

(based on 1 review)

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Reviewed by 1 customer

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(2 of 2 customers found this review helpful)


Fast and easy to hook up,,,and it works

By Jeff

from Richmond Ky.

Verified Buyer


  • High-Performance
  • Powerful
  • Reliable


    Best Uses

    • Business
    • Recreation
    • Transportation

    Comments about Battery Doctor Battery Isolators:

    My job requires me to work in traffic,so I have several warning lights on my truck that run off an auxiliary battery. I also have a power inverter that runs off same battery that I use for power tools. This isolater keeps my aux battery ready to go!

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    All versions of Battery Doctor Battery Isolators:
    Item # Amps Each
    BD92 150 $94.99
    BD90 100 $60.00