Batteries for Audi A4 B5 1.8 T 170 hp
Which battery does a Audi A4 B5 1.8 T need?
Specifications and battery: 1.8 T (170 hp)
Battery for Audi A4 B5 1.8 T (170 hp): versions with Start-Stop use a 70 Ah, 760 A AGM battery (278 × 175 × 190 mm), and those without it use a conventional 74 Ah, 680 A battery (278 × 175 × 190 mm). In every case the positive terminal is on the right.
- Start-Stop battery
- Depends on version
Battery for this engine
| Version | Technology | Capacity | Cold cranking (EN) | Size (L×W×H) | Polarity |
|---|---|---|---|---|---|
| With Start-Stop | AGM | 70 Ah | 760 A | 278 × 175 × 190 mm | + on the right |
| Without Start-Stop | Conventional | 74 Ah | 680 A | 278 × 175 × 190 mm | + on the right |
This engine shares its battery with the 1.8 (115 hp), 1.8 (125 hp), 1.8 quattro (115 hp), 1.8 quattro (125 hp) and 14 more: the compatible batteries are exactly the same.
Data: vehicle specifications and the battery manufacturer's application catalogue.
Battery analysis for your Audi A4 B5 1.8 T
Quick answer You need an AGM battery of 70 Ah. Our recommendation: VARTA A7.
Prices and availability updated on 19/10/2026
Based on the batteries we found for your vehicle, our experts help you pick the right one.
📋 What we found
For your Audi A4 B5 1.8 T we found 3 compatible batteries. This list includes 1 Start-Stop battery and 2 conventional batteries (non Start-Stop).
⚡ Battery type for your vehicle
Does your Audi A4 B5 1.8 T have a Start-Stop system? It shuts the engine off at short stops (traffic lights, jams) and restarts it automatically when you release the brake/clutch. If your dashboard has an "A-OFF" button or an engine icon with a circular arrow, it has it.
How do I know if my car has Start-Stop?
What happens if I fit a conventional battery in a Start-Stop car?
🔋 Technology (AGM / EFB)
✓ All Start-Stop batteries in the list are AGM — the most advanced technology. Perfect if your current battery was AGM or EFB: AGM always replaces both. Remember to register it via OBD if your car has a BMS (BMW, Audi, VAG, Mercedes…) so the alternator charges it correctly.
📊 View AGM vs EFB vs Conventional — full comparison
⭐ Our recommendation
For your Audi A4 B5 1.8 T we recommend the VARTA A7 (AGM, 70 Ah). It also offers the highest capacity (Ah) and the highest cranking power (CCA) on the list — more headroom in cold starts and with many consumers. Varta is the world's leading manufacturer of starter batteries and supplies first-equipment (OEM) batteries to the major European car makers.
- Rated 4.8/5 by 67 verified customers.
- Next-day delivery if you order before 6 PM.
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Verified selection
- Class: Car Batteries
- Brand: Audi
- Model: A4 B5
- Engine: 1.8 T
Start-Stop & high energy demand batteries
AGM or EFB battery for start-stop vehicles and for cars with high energy demand (many electrical consumers, frequent starts). More charge cycles, better charge recovery and longer service life.
Does your car have Start-Stop?
Start-Stop switches the engine off at traffic lights. If your car has it, it needs an AGM or EFB battery.
There are no batteries of that type for this engine. Try "Show all" or message us.
| Category | Make | Reference | Capacity | Cold cranking | Dimensions | Technology | Price | |
|---|---|---|---|---|---|---|---|---|
| Start-Stop & high energy demand batteries | VARTA | A7 | 70 Ah | 760 A | 278×175×190 mm | AGM | €148.78 | More info |
Conventional Battery
This is a standard or conventional battery for vehicles without a start-stop system
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Chargers
Chargers for your battery
Frequently asked questions
- Yes, you can install a higher capacity (Ah) battery as long as the physical dimensions fit your Audi A4 B5 1.8 T battery compartment and the positive terminal position matches.
- The Audi A4 B5 1.8 T requires a battery with the correct capacity (Ah) and Cold Cranking Amps (CCA) for this engine. Compatible batteries offer 70-77 Ah, 680-780 A (CCA), 12 V, case H6/L3, conventional flooded technology. Browse the compatible battery list below.
- The exact Ah rating for the Audi A4 B5 1.8 T depends on the vehicle's original electrical consumers. Compatible batteries offer 70-77 Ah, 680-780 A (CCA), 12 V, case H6/L3, conventional flooded technology. Use our finder for a precise recommendation.
- To find the exact battery you need, you need to know the make, model, and engine. If your car has a Start-Stop system (the engine shuts off at traffic lights), you need an AGM or EFB battery. An AGM battery can only be replaced with another AGM battery. However, an EFB battery can be replaced with either another EFB or an AGM battery, as the latter is superior.
- The standard battery is the conventional type. The EFB battery withstands start/stop cycles better. The AGM battery is the most durable and is mandatory in cars with Start-Stop and regenerative braking. Never replace an AGM battery with an EFB or standard battery.
- 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 and Portugal delivery takes 24 working hours if you order before 6:00 pm and the battery is in stock; for the Balearic Islands and other EU destinations allow 2 to 5 days. Batteries are shipped fully charged and ready to install.
- ⚠ Then you need a battery designed for Start-Stop (EFB or AGM). We have hidden the conventional batteries from the list: fitting them in your car would ruin the battery within months and could damage the alternator. The batteries below are built for the frequent charge/discharge cycles of Start-Stop. 💡 Great. You can buy either a conventional or a Start-Stop (EFB or AGM) battery: a Start-Stop battery is perfectly valid in a non-Start-Stop car and is actually more robust (longer life, better cold-start performance). It is just a bit pricier. On vehicles older than year 2000, an EFB is preferable to an AGM: legacy alternators charge at a fixed voltage without temperature compensation, and an AGM needs a more precise charging profile to avoid losing life quickly — an EFB tolerates the classic alternator profile better. 💡 If in doubt, play it safe: buy a Start-Stop battery (EFB or AGM). It works in Start-Stop cars and non-Start-Stop cars alike, lasts longer and avoids any risk. You only pay a few euros more than a conventional one.
Guides
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This vehicle uses a conventional flooded battery: no BMS registration is required, the alternator will charge it directly.