20090 - Battery Doctor® Battery Isolator - 12V / 100 AMP
SKU: 32159307380

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

Sale price$82.80 Regular price$92.00
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

20090 - Battery Doctor® Battery Isolator - 12V / 100 AMP100 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

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

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 32159307380

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Amazon Customer
Omaha, US
★★★★★ 5
Small but mighty
Size: 5.25” Woofer
Great sound. I can turn my stereo up loader than I care to listen to it and notice no distortion.
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Reviewed in the United States on April 20, 2026
M
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Meeikal
Carnegie, US
★★★★★ 5
Solid choice for fuse holder
Size: 300A Fuse Holder
It’s awesome, solid connections for running 0 gauge wire. No issues after using for months! Might upgrade to using 0 gauge wire ferrules to use with this but for now everything is working well.
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Reviewed in the United States on January 14, 2026
D
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Dana
Massapequa, US
★★★★★ 5
Would buy again
Size: 300A Fuse Holder
Works as described
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Reviewed in the United States on April 13, 2026
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Will Peppers jr
Whiting, US
★★★★★ 5
I can wire my 0gage wre finally
Size: 300A Fuse Holder
The speed of service and delivery fused at different Amps voltage to purchase appearance is always a great addition and skar audio is always a head of the game I love skar audio I have been running their RP series amps I have all of them except the 4500.1 I bought this for my 07 Wolfsburg jetta with a 15 dual 2ohm down to 1ohm with the RP 3500.1 and it slumps and hits so low the skar box foe my single 15evl series..is tuned to 30htz..n when it hits that level and lower man u know it ..o call it the 23htz (23hurter)..explosive always excellent quality and functionality thanks 😊
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Reviewed in the United States on January 28, 2025
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Kraig Cash
Dallas, US
★★★★★ 5
Top notch
Size: 300A Fuse Holder
Very good quality
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Reviewed in the United States on January 8, 2026

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