2010-2024 Toyota 4Runner Gen 3 Dual Battery System

Batteries Sold Separately: Group 25 Batteries Required

Upgrade Your 4Runner’s Electrical Capability

The 2010–2024 Toyota 4Runner Gen 3 Dual Battery System gives you a powerful, reliable electrical foundation for powering accessories without risking your cranking battery. Designed for demanding overland, off-road, and utility use, this system features our GEN 3 Power Hub, a precision-fit steel tray, and all hardware needed for a clean, professional installation.

GEN 3 Power Hub

Take a closer look at the advanced Power Hub that sets this system apart.

Bus Bars

• Simplifies the process of adding electrical accessories—connect winches, compressors, lighting, audio equipment, and more.
• Accessories run from the auxiliary battery, preventing accidental drain of your cranking battery.
• Features three stud sizes for heavy-gauge wiring: 3/8", 5/16", and 1/4", plus three #10 screws for smaller ring terminals.

Boost Switch Functions

• Auto: Automatically manages battery connection based on voltage levels.
• On: Manually connects both batteries—acts like jumper cables for starting the engine.
• Off: Keeps the batteries separated.

G Screen Port

Compatible with our optional G Screen Monitoring System—simply plug in a single cable to view voltage, connection status, and boost controls from inside the cab.

How It Works

A heavy-duty smart battery combiner automatically manages the relationship between your cranking and accessory batteries.

• At startup, the cranking battery charges first.
• Once charged, the system links both batteries so the alternator can charge them together.
• When voltage drops below ~12.7V for about one minute, the batteries separate.

Your accessories continue running from the auxiliary battery, ensuring the cranking battery remains protected.

Smart Combiner Specifications

• Rated for 300A continuous current flow.
• Handles 500A for up to 5 minutes and up to 2,000A for 5 seconds.
• Requires a minimum of 8V to operate.
• Consumes zero power to maintain battery connection and generates no heat during operation.

Battery Requirements

Matching Group 25 batteries are required. The factory battery is not compatible.

Bus Bar Details

• Positive and negative bus bars include 3/8", 5/16", and 1/4" studs for high-amperage accessories.
• Three #10 screws accommodate small-gauge, low-amp accessories such as LED lights or communications equipment.

Cable Construction

• Built from 2-gauge, high-strand-count pure copper welding cable.
• More flexible, more conductive, and more durable than standard battery cable.
• Pure copper, tin-plated lugs resist corrosion and ensure optimal conductivity.
• All terminals are sealed with thick, adhesive-lined heat shrink for long-term protection.

Installation Time

• Typical DIY installation: 2–3 hours using common tools and our step-by-step video guide.
• Professional installation: most shops bill approximately 2 hours on a stock vehicle.
• Add time if aftermarket wiring needs to be rerouted or cleaned up.

Included in the Box

• GEN 3 Power Hub: Pre-wired, heavy-duty smart combiner for charging both batteries from the alternator.
• Steel Battery Tray: CNC laser-cut, precision-bent, and powder-coated for durability and perfect fit.
• Installation Hardware: All components required for a clean and secure installation.

Partner item — ships directly from Genesis Offroad