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
The Toyota Prius IV (XW50), produced between 2015 and 2022, is an iconic hybrid vehicle that combines innovative technology with reliability. The hybrid versions of this model, both standard and Plug-In, use lead-acid batteries to support the vehicle’s electrical systems and startup. Choosing the right battery is essential for the smooth operation of the car.
For both the 1.8 Hybrid and 1.8 Hybrid Plug-In versions, batteries with a capacity of 50 to 54 Ah and a cold cranking current of 450–540 A are recommended. Example suitable models include Bosch S40 02, Bosch S50 02, Exide EA530, Exide EB500, Halfords HCB 012, Varta C22, and Varta C30. These batteries ensure stable power supply and reliability even under demanding conditions.
Interestingly, the Toyota Prius IV was the first Prius model built on the TNGA (Toyota New Global Architecture) platform, which enhanced the vehicle’s aerodynamics and energy efficiency. This made the car even more economical and environmentally friendly. It’s also worth noting that the lead-acid batteries in the Prius IV are responsible for powering traditional electrical systems, while the main hybrid battery manages the drive system.
By maintaining regular checks and choosing the right battery, Prius IV owners can enjoy the vehicle’s reliability and efficiency for many years. When replacing the battery, it’s always important to ensure it meets the manufacturer’s requirements and has the appropriate capacity and cold cranking current.
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!