Last updated: May 21st, 2026

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The GS Yuasa Auxiliary AGM series is specifically designed to support modern vehicles equipped with advanced electrical systems, including hybrid and start-stop technology. AGM (Absorbent Glass Mat) technology provides superior resistance to deep discharge cycles, making these batteries ideal for applications that require a reliable and long-lasting power source. Unlike conventional lead-acid batteries, AGM batteries feature a sealed design that eliminates the risk of leaks and significantly reduces maintenance requirements. The GS Yuasa Auxiliary AGM series is engineered to deliver stable voltage levels, ensuring optimal performance of vehicle electronics, even under high-demand conditions.

The GS Yuasa HJ-S46B24R is a compact AGM battery with a capacity of 45Ah and a maximum starting current of 325A. This battery is specifically designed for auxiliary power applications in hybrid and advanced start-stop vehicles, where sustained power output and deep cycling capabilities are essential. Its AGM construction ensures enhanced durability and a longer lifespan compared to traditional flooded batteries. With its compact dimensions of 238 mm in length, 129 mm in width, and 227 mm in height, this battery falls within the B24 size category, a standard commonly found in Japanese and hybrid vehicles.

One of the notable characteristics of the HJ-S46B24R is its unique terminal configuration. Unlike most European batteries, this model features a positive terminal located on the left side (layout 1). Additionally, it is equipped with type 3 terminals, which are thinner than standard European terminals and are commonly found in Japanese vehicles. This specific terminal design ensures compatibility with a range of hybrid and electric vehicles that require smaller terminal connections.

Another distinctive feature of the HJ-S46B24R is its B00 mounting system. Unlike standard B13 mounting systems, which secure the battery with a full perimeter clamp, the B00 configuration lacks mounting flanges or bottom ledges, meaning it relies on top clamps or side brackets for secure installation. This mounting style is less common in European vehicles but is frequently used in Japanese automotive applications, particularly in hybrid models that require a lightweight and space-efficient battery.

When compared to similar batteries, such as the Optima Yellow Top AGM YT S 2.7J, the GS Yuasa HJ-S46B24R offers a slightly higher capacity (45Ah vs. 38Ah) but a lower cranking power (325A vs. 460A). However, the GS Yuasa model maintains excellent deep-cycle performance and stable power output, making it a highly reliable choice for vehicles requiring auxiliary battery support. Both batteries share the same B24 size classification and B00 mounting system, ensuring compatibility with similar applications.

Overall, the GS Yuasa HJ-S46B24R is an excellent choice for drivers seeking a high-performance auxiliary AGM battery for hybrid or start-stop vehicles. Its advanced technology, compact design, and unique terminal configuration make it an ideal solution for vehicles requiring specialized power management. With its superior deep-cycle durability and maintenance-free operation, this battery provides reliable and consistent performance for modern automotive electrical systems.

Specifications

Battery specification
Brand	GS Yuasa
Series	Auxiliary AGM
Model	HJ-S46B24R
Battery technology	AGM
Capacity	45 Ah
CCA (Cold Cranking Amps)	325 A
Length	238 mm
Width	129 mm
Height	227 mm
Battery layout	1 – positive on the left side
Terminal types	3
Base hold-down	B00

Similar batteries

Battery model	Capacity	CCA	Dimensions	Base hold-down
GS Yuasa Auxiliary AGM HJ-S46B24R	45 Ah	325 A	238x129x227 mm	B00
Optima Yellow Top AGM YT S 2,7J	38 Ah	460 A	237x129x227 mm	B00

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Frequently Asked Questions about the GS Yuasa HJ-S46B24R car battery

What vehicles is the GS Yuasa Auxiliary AGM HJ-S46B24R battery compatible with?

The GS Yuasa Auxiliary AGM HJ-S46B24R battery is primarily designed for use in Toyota and Lexus hybrid vehicles, including popular models such as the Toyota Prius, Auris, Yaris, and Lexus CT200h and IS300h. Always check your vehicle’s manual or consult a professional to confirm compatibility.

What are the main features of the GS Yuasa Auxiliary AGM HJ-S46B24R battery?

This auxiliary battery uses advanced AGM (Absorbent Glass Mat) technology, offering improved reliability, longer life, enhanced vibration resistance, and superior charge acceptance. It is maintenance-free and specifically engineered for the unique electrical demands of hybrid vehicles.

How does the AGM technology in the HJ-S46B24R benefit hybrid vehicles?

AGM technology provides better deep cycling capabilities, which are essential for hybrid vehicles that frequently start and stop. The design also ensures minimal acid leakage, greater durability, and higher resistance to extreme temperatures, making it ideal for modern hybrid applications.

Is the GS Yuasa HJ-S46B24R battery a direct replacement for the original auxiliary battery in my Toyota or Lexus hybrid?

Yes, the GS Yuasa HJ-S46B24R is designed as a direct replacement for the original auxiliary battery in many Toyota and Lexus hybrid models. However, it is important to verify the battery code and dimensions to ensure a perfect fit for your specific vehicle.

What is the expected service life of the GS Yuasa Auxiliary AGM HJ-S46B24R battery?

While the actual lifespan may vary depending on usage and environmental conditions, AGM batteries like the HJ-S46B24R typically offer a longer service life compared to conventional batteries, often lasting between 4 and 6 years in normal hybrid vehicle operation.

Do I need to perform any maintenance on the GS Yuasa Auxiliary AGM HJ-S46B24R battery?

No, the HJ-S46B24R is a maintenance-free battery. It is fully sealed, does not require topping up with distilled water, and is designed for hassle-free operation throughout its service life.

Can I install the GS Yuasa HJ-S46B24R battery myself?

While installation can be straightforward for those with automotive experience, it is recommended to have the battery installed by a professional technician to ensure correct fitment, safe handling, and proper setup in your hybrid vehicle.

Is the GS Yuasa Auxiliary AGM HJ-S46B24R battery environmentally friendly?

Yes, AGM batteries like the HJ-S46B24R are fully recyclable. GS Yuasa batteries are designed with environmental sustainability in mind, and proper recycling of your old battery is encouraged to minimize environmental impact.