Choosing the right battery for the Toyota Prius II (XW20) from 2003-2009 is crucial, as this model relies on unique hybrid solutions that require a tailored power source. For this car, AGM batteries with a capacity of 38 to 45 Ah and a starting current of 325 to 460 A are recommended.
Examples of compatible models include the GS Yuasa HJ-S46B24R and Optima YT S 2,7J. An important aspect is the polarity layout – in this case, a battery with the positive terminal on the left side is required. Additionally, the Toyota Prius II needs batteries with thinner type 3 terminals, which is also a less standard solution. Before purchasing, it is advisable to check the technical specifications of the selected battery model to avoid installation issues.
The Prius II uses a B00 mounting type, which differs from the popular B13 mountings found in most vehicles. This means not all standard batteries will be suitable. It is also worth noting that hybrid cars like the Prius utilize the battery not only for starting the engine but also for powering many onboard systems, making AGM batteries more suitable due to their efficiency and longer lifespan.
An interesting fact is that the Toyota Prius II is one of the first mass-produced hybrid cars that gained immense popularity worldwide. Thanks to its advanced hybrid technology, replacing the battery in this model is not only a matter of technical parameters but also an environmentally conscious choice. By selecting the appropriate battery, we contribute to maintaining the low carbon footprint of this remarkable vehicle.
Toyota Prius in version II (XW20) was produced in the years 2003 – 2009. The following table presents information about batteries that match each of the engines available on the market.
Basic parameters of batteries suitable for Toyota Prius (2003-2009):
| Layout | Terminal types | Base hold-down |
|---|---|---|
| 1 – positive on the left side | 3 | B0 |
Toyota Prius II (XW20) – petrol engines:
- 1.5 Hybrid (57 kW) – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| GS Yuasa Auxiliary AGM HJ-S46B24R | 45 Ah 325 A | 238x129x227 mm | More |
| Optima Yellow Top AGM YT S 2,7J | 38 Ah 460 A | 237x129x227 mm | More |
For the Toyota Prius II (XW20) equipped with the 1.5 Hybrid (57 kW) Start-Stop engine, the choice of battery is particularly important due to the specific requirements of hybrid technology. This engine utilizes a start-stop system and relies on an auxiliary battery to power the car’s electronics and support the hybrid system when the vehicle is not running solely on the internal combustion engine. It is essential to use a battery that is compatible with the hybrid system, offers reliable cold cranking power, and fits the compact battery compartment typical for the Prius II.
Two popular battery options that fit the 1.5 Hybrid engine in the Prius II are the GS Yuasa Auxiliary AGM HJ-S46B24R and the Optima Yellow Top AGM YT S 2,7J. Both of these batteries are of the AGM (Absorbent Glass Mat) type, which is required for hybrid vehicles due to their enhanced durability and deep-cycle capabilities. The GS Yuasa HJ-S46B24R provides a capacity of 45 Ah and a cold cranking current of 325 A, with dimensions of 238 mm in length, 129 mm in width, and 227 mm in height. The Optima Yellow Top YT S 2,7J offers a slightly lower capacity of 38 Ah but a higher cold cranking current of 460 A, with similar physical dimensions to ensure a proper fit in the battery compartment.
Both models use the same terminal layout (layout 1, terminal type 3) and are mounted in the B00 configuration, which corresponds to the original mounting style of the Prius II. Choosing either of these AGM batteries ensures compatibility with the Prius II hybrid system, reliable performance in start-stop operation, and optimal durability in various climates. It is important to avoid using standard lead-acid batteries, as only AGM batteries can withstand the frequent cycling and unique demands of the Toyota Prius II hybrid system.
If you’re still unsure which battery fits your Toyota Prius , or if you want to help others in their selection, please send us a photo of your current battery in the comment section at the bottom of the page. You can also send the picture to contact@whatbattery.co.uk (we will place it in the comments to also help other users). Be sure to specify the car model, year, type, as well as the engine capacity and power. We’ll do our best to assist you!