Choosing the right battery for a Renault 21 produced between 1986 and 1996 requires an understanding of the car’s engine specifications and energy demands. Since these vehicles did not come with Start-Stop systems, the selection process is a bit more straightforward compared to modern vehicles. All engines, whether petrol or diesel, are compatible with traditional lead-acid batteries, which are known for their reliability and affordability. This type of battery continues to be a popular choice for vehicles from this era thanks to its proven performance and easy maintenance.
For petrol engines with 1.4 and 1.7-liter capacities, the recommended battery specifications are between 44 Ah and 54 Ah capacity and a starting power of 360 to 540 amperes. Some examples of suitable battery models include the Bosch S30 02, Exide EA530, and Varta B19. These models provide the necessary balance between compact size and reliable performance for smaller engine variants. Interestingly, even within these engines, opting for a slightly higher cold cranking amperage (CCA) can benefit drivers in colder climates where winter starting performance becomes critical.
If you own a Renault 21 with a larger 2.0, 2.0 Turbo, or 2.2 petrol engine, including 4×4 versions, you will need a battery offering between 55 Ah and 65 Ah and a starting current from 460 to 640 amperes. Examples of compatible batteries include the Bosch S40 05, Exide EA640, and Varta D24. These batteries ensure sufficient energy supply for more demanding engines, especially when additional power is needed for turbocharged models. A little-known fact is that turbocharged engines often require batteries with more stable voltage characteristics to handle the additional boost control systems.
For diesel versions like the 1.9 D, 2.1 D, 2.1 TD, and 2.1 Turbo-D, a stronger battery is essential. These engines require a battery with a minimum capacity of 70 Ah and up to 78 Ah, providing between 640 and 780 amperes of starting power. Diesel engines inherently demand more starting energy due to higher compression ratios. Suitable examples of batteries for these diesel variants include the Bosch S50 08, Exide EA770, and Varta E11. It is worth noting that a battery with a higher CCA rating is particularly valuable for diesel vehicles, as it supports easier starts during freezing temperatures when diesel fuel thickens.
Another important consideration is choosing a battery from a trusted brand that ensures good quality standards. Brands like Bosch, Exide, Halfords, Lucas, and Varta are all recognized for providing durable and high-performing batteries. Even though these examples fit perfectly, it is always recommended to double-check the physical dimensions and terminal layout to avoid installation issues. Over the years, battery casings have slightly changed, so ensuring compatibility remains crucial for older models like the Renault 21.
Choosing a battery today also offers the option of enhanced maintenance-free models compared to what was available during the production years of the Renault 21. While conventional lead-acid batteries are still excellent, modern versions often feature improved internal design that minimizes water loss and extends lifespan. This makes battery maintenance less of a chore, especially for classic car enthusiasts who may not drive their Renault 21 daily.
Ultimately, picking the right battery for your Renault 21 involves balancing the right specifications with reliable quality. By selecting a reputable model suited for your engine type, you ensure not just smooth daily starts but also protect the car’s electrical system for the long term. A good battery choice is a small investment that guarantees many worry-free miles in a car that has become a classic of its era.
Renault 21 was produced in the years 1986 – 1996. We invite you to a list of batteries matching individual engine versions.
Basic parameters of batteries suitable for Renault 21 (1986-1996):
| Layout | Terminal types | Base hold-down |
|---|---|---|
| 0 – positive on the right side | 1 | B13 |
Renault 21 – petrol engines:
- 1.4
- 1.7
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S3 S30 02 | 45 Ah 400 A | 207x175x190 mm | More |
| Bosch S4 S40 02 | 52 Ah 470 A | 207x175x190 mm | More |
| Bosch S5 S50 02 | 54 Ah 530 A | 207x175x190 mm | More |
| Exide Classic EC440 | 44 Ah 360 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 |
| Lucas Premium LP012 | 45 Ah 390 A | 210x175x190 mm | More |
| Lucas Premium LP079 | 50 Ah 420 A | 210x175x190 mm | More |
| Lucas Supreme LS012 | 58 Ah 520 A | 210x175x190 mm | More |
| Varta Black Dynamic B19 | 45 Ah 400 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 |
Renault 21 – petrol engines:
- 2.0
- 2.0 4×4
- 2.0 Turbo
- 2.0 Turbo 4×4
- 2.2
- 2.2 4×4
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S3 S30 05 | 56 Ah 480 A | 242x175x190 mm | More |
| Bosch S4 S40 05 | 60 Ah 540 A | 242x175x190 mm | More |
| Bosch S5 S50 05 | 63 Ah 610 A | 242x175x190 mm | More |
| Exide Classic EC550 | 55 Ah 460 A | 242x175x190 mm | More |
| Exide Excell EB620 | 62 Ah 540 A | 242x175x190 mm | More |
| Exide Premium EA640 | 64 Ah 640 A | 242x175x190 mm | More |
| Halfords Essentials HB 027 | 56 Ah 480 A | 242x175x190 mm | More |
| Halfords Standard HCB 027 | 62 Ah 550 A | 242x175x190 mm | More |
| Lucas Premium LP027 | 60 Ah 540 A | 243x175x190 mm | More |
| Lucas Supreme LS027 | 65 Ah 640 A | 242x175x190 mm | More |
| Varta Black Dynamic C14 | 56 Ah 480 A | 242x175x190 mm | More |
| Varta Blue Dynamic D24 | 60 Ah 540 A | 242x175x190 mm | More |
| Varta Silver Dynamic D15 | 63 Ah 610 A | 242x175x190 mm | More |
Renault 21 – diesel engines:
- 1.9 D
- 2.1 D
- 2.1 TD
- 2.1 Turbo-D
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S3 S30 08 | 70 Ah 640 A | 278x175x190 mm | More |
| Bosch S4 S40 08 | 74 Ah 680 A | 278x175x190 mm | More |
| Bosch S5 S50 08 | 77 Ah 780 A | 278x175x190 mm | More |
| Exide Classic EC700 | 70 Ah 640 A | 278x175x190 mm | More |
| Exide Excell EB740 | 74 Ah 680 A | 278x175x190 mm | More |
| Exide Premium EA770 | 77 Ah 760 A | 278x175x190 mm | More |
| Halfords Essentials HB 096 | 70 Ah 640 A | 278x175x190 mm | More |
| Halfords Standard HCB 096 | 76 Ah 680 A | 278x175x190 mm | More |
| Lucas Premium LP096 | 75 Ah 680 A | 278x175x190 mm | More |
| Lucas Supreme LS096 | 78 Ah 780 A | 278x175x190 mm | More |
| Varta Black Dynamic E13 | 70 Ah 640 A | 278x175x190 mm | More |
| Varta Blue Dynamic E11 | 74 Ah 680 A | 278x175x190 mm | More |
| Varta Silver Dynamic E44 | 77 Ah 780 A | 278x175x190 mm | More |
If you’re still unsure which battery fits your Renault 21 , 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!