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20090 – Battery Doctor® Battery Isolator – 12V / 100 AMP
20090 – Battery Doctor® Battery Isolator – 12V / 100 AMP
20090 – Battery Doctor® Battery Isolator – 12V / 100 AMP

Battery Isolators

20090 – Battery Doctor® Battery Isolator – 12V / 100 AMP

Original price was: $118.95.Current price is: $24.14.

100 Amp Battery Isolator Battery Doctor® state-of-the-art, fully automatic dual battery controller i…

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Check the match before ordering

  • Part numberMatch the complete number, including letters and suffixes.
  • Electrical specificationConfirm voltage, chemistry and charging requirements.
  • Physical fitCompare dimensions, connector, polarity and terminal position.
SKU
20090
Brand
Battery Doctor®
Category

Description

100 Amp Battery Isolator

Battery Doctor® state-of-the-art, fully automatic dual battery controller is suitable for any vehicle with an auxiliary battery. Smaller and lighter than other standard battery isolators, the Battery Doctor® Battery Isolator employs electronic switching control technology. Our high-performance electronic isolator allows you to charge two batteries from a single alternator, and keeps the starting battery isolated from the second battery. Also, with a single push of the override/reset button, you can change the batteries to parallel mode for jump starting.

– Priority charging for starting battery.
– Includes mounting bracket that houses the 4″x4″x2″ Isolator.
– Over current and surge protected for vehicles with electronic systems.
– Manual override for starting battery.
– Automatically charges auxiliary battery.

NOTE: Battery Doctor Isolators are designed for lead acid batteries only!

Specifications

Charging Current: 75 Amp / 100 Amp Peak
Voltage: 12 volt
Charging Type: Parallel
Control: Electric
Approval: EMC
Current Draw: Charging 50 mA/(Standby 30 mA)
Surge Protection: Built In
Mounting: Surface/Fire Wall/Battery Side
Voltage Draw: None

Information Downloads

20090 – 20092 Isolators User Manual

20090 – 20092 Isolators Specification Sheet

Additional information

Brand

Battery Doctor®
Product Type

Battery Isolators
Brand + Part Number

Battery Doctor® 20090
Product Name + Part Number

Battery Isolators 20090

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Ordering guidance

A reliable replacement starts with an exact match

Similar-looking batteries and accessories can use different voltage, chemistry, connectors or polarity. Verify the label and physical fit before purchase.

View the battery matching guide
Is matching the voltage enough?

No. Chemistry, dimensions, connector type, polarity, terminal position and charging requirements must also match.

Which number should I compare?

Use the complete model or part number printed on the original item. Include every prefix, suffix, dash and revision where shown.

What if my device model is not listed?

Do not assume compatibility from appearance alone. Compare the original part number and specifications or confirm the requirements in the device documentation.

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