Ignitions and Electrical› Charging Systems

Genesis Offroad

2021 Diesel Gladiator Dual Battery Kit - Under Hood

$814.00

SKU: G02Z 221-JTDG3-UNDERHOOD

In Stock
In Stock
Ships by Jun 9
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Genesis Offroad 221-JTDG3-UNDERHOOD is a smart dual battery system for 2021+ Diesel Gladiators. It automatically connects/disconnects batteries for charging, prioritizing the cranking battery. Accessories run from the second battery, which mounts under the back seat, while stock batteries remain under the hood. Adjustable brackets fit Group 35 up to Group 31 batteries. It includes 2ga pure copper welding cable with tin-plated, heat-shrink sealed copper lugs.

Fitment

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Specifications

BrandGenesis Offroad
Part NumberG02Z 221-JTDG3-UNDERHOOD

Videos

Jeep JL & Gladiator Gen 3 Dual Battery Kit Installation Guide

Jeep JL & Gladiator Gen 3 Dual Battery Kit Installation Guide

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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