The Toyota Prius, a pioneer among hybrid vehicles, has earned a reputation as one of the most eco-friendly and economical cars on the market. Since its debut in 1997, the Prius has evolved through several generations, and the fourth generation, produced from 2015 to 2022, brought numerous technological innovations and design changes. One of the key components of every vehicle, including the Prius, is the 12V battery. Although hybrids are primarily associated with large batteries for electric propulsion, the standard 12V battery plays an equally important role.
The 12V battery in the fourth-generation Toyota Prius powers the electronic systems, lighting, radio, and car startup. Although its role may seem secondary compared to the traction battery, it is impossible to start the vehicle without a functioning 12V battery. Therefore, it is important to know when and how to replace it.
Why is the 12V battery important?
In standard cars, the 12V battery powers the starter and other basic electrical systems. In a hybrid Toyota Prius, even though the main drive is electric, the 12V battery performs many functions essential to the daily use of the vehicle. It powers systems such as the central locking, security systems, interior and exterior lighting, and the onboard computer. Furthermore, this battery is necessary to start the vehicle – it activates the relays that allow the hybrid system to start.
Frequency of 12V battery replacement
The 12V battery, like any other vehicle component, has a specific lifespan. For the fourth-generation Toyota Prius, it is recommended to replace it every 3-5 years, depending on the conditions of use. Intensive vehicle use, extreme weather conditions, or prolonged inactivity can shorten the battery’s lifespan. It is important to regularly check the battery’s condition and respond to the first signs of wear, such as difficulties in starting the car, flashing indicators, or electronic problems
Toyota Prius in version IV (XW50) was produced in the years 2015 – 2022. Below we present the specifications of batteries suitable for specific engines.
Basic parameters of batteries suitable for Toyota Prius (2015-2022):
| Layout | Terminal types | Base hold-down |
|---|---|---|
| 0 – positive on the right side | 1 | B13 |
Toyota Prius IV (XW50) – petrol engines:
- 1.8 Hybrid – with Start-Stop
- 1.8 Hybrid Plug-In – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S4 S40 02 | 52 Ah 470 A | 207x175x190 mm | More |
| Bosch S5 S50 02 | 54 Ah 530 A | 207x175x190 mm | More |
| Exide Excell EB500 | 50 Ah 450 A | 207x175x190 mm | More |
| Exide Premium EA530 | 53 Ah 540 A | 207x175x190 mm | More |
| Halfords Standard HCB 012 | 52 Ah 450 A | 207x175x190 mm | More |
| Varta Blue Dynamic C22 | 52 Ah 470 A | 207x175x190 mm | More |
| Varta Silver Dynamic C30 | 54 Ah 530 A | 207x175x190 mm | More |
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!