• WIRTHCO 20092 WirthCo Battery Doctor 20092 Dual Battery Isolator, 125/150 Amp, 12 Volt, Electronic Parallel Charging with Manual Override, IP62 Water Resistant, 4 x 4 x 2 Inch
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WIRTHCO

WirthCo Battery Doctor 20092 Dual Battery Isolator, 125/150 Amp, 12 Volt, Electronic Parallel Charging with Manual Override, IP62 Water Resistant, 4 x 4 x 2 Inch

WirthCo Battery Doctor 20092 Dual Battery Isolator, 125/150 Amp, 12 Volt, Electronic Parallel Charging with Manual Override, IP62 Water Resistant, 4 x 4 x 2 Inch

W4820092

$244.99
$244.99
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In stock
  • Genuine brand-name parts
  • Ships from US warehouse
  • 30-day returns
  • DUAL BATTERY MANAGEMENT - Automatically charges a 12 volt auxiliary battery from a single alternator while keeping the starting battery isolated, rated at 125 Amp continuous and 150 Amp peak for vehicles with an auxiliary battery.
  • MANUAL OVERRIDE JUMP START - A single push of the override and reset button parallels both batteries so a charged auxiliary battery can crank the engine when the starting battery is low, then returns to automatic charging once the engine starts.
  • COMPACT ELECTRONIC DESIGN - Uses electronic switching control technology in a 4 by 4 by 2 inch housing that is smaller and lighter than standard isolators, with surface, firewall, or battery-side mounting and an included mounting bracket
  • OVERCURRENT AND SURGE PROTECTED - Built-in surge protection and overcurrent protection guard the isolator and charging system in vehicles with electronic ignition systems, with no voltage drop. For use with lead acid flooded, AGM, and gel batteries.
  • WATER RESISTANT IP62 HOUSING - IP62 rated construction makes the isolator suitable for marine installations, and priority charging keeps the starting battery topped up before current is shared with the second battery.
Brand WIRTHCO
Manufacturer part number 20092
UPC / GTIN 10054200929
Weight 1.50 lb
Dimensions (L × W × H) 5.1 × 5.7 × 2.3 in
Category Engine & Drivetrain
Condition New — genuine brand-name part
Genuine brand-name part, full manufacturer warranty. Ships from the closest US warehouse — normally within 1–3 business days. Verify fitment with the manufacturer part number above; not sure? Send us your VIN and we’ll confirm before you order. 30-day returns on unused parts.

Shipping & delivery

Orders ship from the distributor warehouse closest to you, normally within 1–3 business days of purchase. Standard ground delivery takes 3–7 business days in the continental US; expedited options are shown at checkout. Oversized items (bumpers, running boards, large tonneau covers, some marine equipment) ship LTL freight — we contact you to schedule delivery and a signature is required.

Returns & warranty

Unused, uninstalled parts in original packaging can be returned within 30 days of delivery. A restocking fee of up to 20% may apply depending on the product and supplier, and return shipping is the buyer’s responsibility unless the item arrived defective, damaged or incorrect. Every product carries the full manufacturer warranty. Contact us with your order number to start a return.

Fitment & part numbers

Verify fitment with the manufacturer part number shown above and your vehicle’s year, make, model and trim. If the listing says “Fits select…”, confirm your exact application before ordering. Not sure? Send us your VIN and the part number and we’ll check it for you.

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