Ignitions and Electrical› Charging Systems

WIRTHCO

BATTERY ISOLATOR

$159.39

SKU: W01I 20090

In Stock
In Stock
Ships by Jun 16
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The Wirthco 20090 is a 12V electronic battery isolator designed for vehicles with auxiliary batteries. It allows a single alternator to charge two batteries, keeping the starting battery isolated from the auxiliary battery. The isolator features priority charging for the starting battery and a manual override function for jumpstarting the vehicle.

Installation is straightforward as it requires no changes to the existing wiring. The unit includes over-current and surge protection for the charging system and vehicle electronics. It is also water-resistant with an IP62 rating, making it suitable for marine applications.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandWIRTHCO
Part NumberW01I 20090

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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