Batteries for Steyr 12 S-Serie 12S21
Which battery does a Steyr 12 S-Serie 12S21 need?
Specifications and battery: 12S21
Steyr 12 S-Serie 12S21: depending on the equipment, it takes a conventional 130 Ah, 1000 A battery (514 × 175 × 210 mm) or a conventional 140 Ah, 800 A battery (513 × 189 × 223 mm). Measure your current battery before choosing. In every case the positive terminal is on the left.
Battery for this engine
| Version | Technology | Capacity | Cold cranking (EN) | Size (L×W×H) | Polarity |
|---|---|---|---|---|---|
| Depending on equipment 1 | Conventional | 130 Ah | 1000 A | 514 × 175 × 210 mm | + on the left |
| Depending on equipment 2 | Conventional | 140 Ah | 800 A | 513 × 189 × 223 mm | + on the left |
This engine shares its battery with the 12S14 and 12S18: the compatible batteries are exactly the same.
Data: vehicle specifications and the battery manufacturer's application catalogue.
EFB, AGM or conventional for this engine?
Rule of thumb for the Steyr 12 S-Serie 12S21: fit the same technology as the original or better (conventional → EFB → AGM), with equal or higher capacity and cold cranking amps, and respect the size and terminal position of around 130 Ah.
Battery analysis for your Steyr 12 S-Serie 12S21
Quick answer Depending on the equipment, your vehicle uses one of these two main batteries. The most common option is ordinary lead-acid 130 Ah (514×175×210 mm): we recommend VARTA J10. Other units use ordinary lead-acid 140 Ah (513×189×223 mm): VARTA K8. Before buying, check the Ah on your current battery's label or measure its length.
Batteries in your Steyr 12 S-Serie 12S21
Measure the width of yours: 175 or 189 mm
Prices and availability updated on 29/10/2026
Based on the batteries we found for your vehicle, our experts help you pick the right one.
📋 What we found
For your Steyr 12 S-Serie 12S21 we found 10 compatible batteries. This list includes 2 AGM or EFB batteries and 8 conventional batteries.
📏 Battery size
The list contains batteries in different sizes or capacities (Ah). In many cases both variants fit, but it's worth checking your compartment dimensions and the Ah of your original battery before buying. Choose the one with the same dimensions as your current battery: a bigger one may not fit the compartment or the hold-down. If several match your size, the higher capacity gives more headroom for cold starts.
📊 View AGM vs EFB vs Conventional — full comparison
⭐ Our recommendation
For your Steyr 12 S-Serie 12S21 we recommend the VARTA J10 (ordinary lead-acid, 130 Ah). It's the battery recommended by the vehicle manufacturer for your Steyr 12 S-Serie 12S21 — the OEM equivalent. Varta is the world's leading manufacturer of starter batteries and supplies first-equipment (OEM) batteries to the major European car makers.
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Verified selection
- Class: Truck Batteries
- Brand: Steyr
- Model: 12 S-Serie
- Engine: 12S21
AGM / EFB batteries
AGM or EFB technology batteries: more charge cycles, faster recovery and a longer life than a conventional battery.
Conventional batteries
Standard lead-acid batteries.
-
Truck battery Varta J10 12V 130Ah 1000A
- 12 V
- 130 Ah
- 1000 A
Dimensions 514×175×210 mm
- ✓ OEM fitment
€147.90
-
Truck battery Tudor TG1403 12V 140Ah 800A
- 12 V
- 140 Ah
- 800 A
- Conventional TUDOR TG1403 · 140 Ah · 800 A
Dimensions 513×189×223 mm
€133.90
-
Truck battery Exide EG1403 12V 140Ah 800A
- 12 V
- 140 Ah
- 800 A
- Conventional EXIDE EG1403 · 140 Ah · 800 A
Dimensions 513×189×223 mm
€128.60
-
Truck battery Exide EF1453 12V 145Ah 900A
- 12 V
- 145 Ah
- 900 A
- Conventional EXIDE EF1453 · 145 Ah · 900 A
Dimensions 513×189×223 mm
€138.70
-
Truck battery Tudor TG1355 12V 135Ah 1000A
- 12 V
- 135 Ah
- 1000 A
Dimensions 514×175×210 mm
€297.20
-
Truck battery Tudor TF1453 12V 145Ah 900A
- 12 V
- 145 Ah
- 900 A
- Conventional TUDOR TF1453 · 145 Ah · 900 A
Dimensions 513×189×223 mm
€169.60
-
Truck battery Varta K8 12V 140Ah 800A
- 12 V
- 140 Ah
- 800 A
Dimensions 513×189×223 mm
€212.50
-
Truck battery Exide EG1355 12V 135Ah 1000A
- 12 V
- 135 Ah
- 1000 A
Dimensions 514×175×210 mm
€282.95
| Category | Make | Reference | Capacity | Cold cranking | Dimensions | Technology | Price | |
|---|---|---|---|---|---|---|---|---|
| Conventional batteries | VARTA | J10 | 130 Ah | 1000 A | 514×175×210 mm | Conventional | €147.90 | More info |
| Conventional batteries | TUDOR | TG1403 | 140 Ah | 800 A | 513×189×223 mm | Conventional | €133.90 | More info |
| Conventional batteries | EXIDE | EG1403 | 140 Ah | 800 A | 513×189×223 mm | Conventional | €128.60 | More info |
| Conventional batteries | EXIDE | EF1453 | 145 Ah | 900 A | 513×189×223 mm | Conventional | €138.70 | More info |
| Conventional batteries | TUDOR | TG1355 | 135 Ah | 1000 A | 514×175×210 mm | Conventional | €297.20 | More info |
| Conventional batteries | TUDOR | TF1453 | 145 Ah | 900 A | 513×189×223 mm | Conventional | €169.60 | More info |
| Conventional batteries | VARTA | K8 | 140 Ah | 800 A | 513×189×223 mm | Conventional | €212.50 | More info |
| Conventional batteries | EXIDE | EG1355 | 135 Ah | 1000 A | 514×175×210 mm | Conventional | €282.95 | More info |
Frequently asked questions
- Steyr 12 S-Serie 12S21: depending on the equipment, it takes a conventional 130 Ah, 1000 A battery (514 × 175 × 210 mm) or a conventional 140 Ah, 800 A battery (513 × 189 × 223 mm). Measure your current battery before choosing. In every case the positive terminal is on the left. We found 10 compatible batteries priced between 128,60€ — 297,20€. Check dimensions and positive terminal position before purchasing.
- Yes, you can install a higher capacity (Ah) battery as long as the physical dimensions fit your Steyr 12 S-Serie 12S21 battery compartment and the positive terminal position matches.
- Use the search tool by selecting your vehicle's make and model. Our system automatically filters compatible part numbers verified by our technicians. If you have any questions, contact us via WhatsApp.
- All our batteries come with the legal guarantee provided by consumer law against manufacturing defects. If a battery has a manufacturing defect, it will be replaced at no cost to the user.
- Under normal circumstances, batteries usually arrive within 1 to 2 days of ordering. However, there are some cases where delivery may take a little longer: peak seasons (Black Friday, Christmas, etc.), palletized shipments, occasional stock shortages, etc.
- In mainland Spain delivery takes 24-48 working hours if you order before 6:00 pm (Monday to Friday) and the battery is in stock; mainland Portugal takes 1 to 4 working days, the Balearic Islands 2 to 5 working days and other EU destinations 4 to 7 working days. Batteries are shipped fully charged and ready to install.