Can I install a higher capacity battery in my BMW 3 Coupe 320 Cd?

Yes, you can install a higher capacity (Ah) battery as long as the physical dimensions fit your BMW 3 Coupe 320 Cd battery compartment and the positive terminal position matches.

What battery fits the Bmw 3 Coupe 320 Cd?

The Bmw 3 Coupe 320 Cd requires a battery with the correct capacity (Ah) and Cold Cranking Amps (CCA) for this engine. Compatible batteries offer 80-85 Ah, 740-800 A (CCA), 12 V, case T7/LB4, conventional flooded technology. Browse the compatible battery list below.

How many Ah does the Bmw 3 Coupe 320 Cd battery need?

The exact Ah rating for the Bmw 3 Coupe 320 Cd depends on the vehicle's original electrical consumers. Compatible batteries offer 80-85 Ah, 740-800 A (CCA), 12 V, case T7/LB4, conventional flooded technology. Use our finder for a precise recommendation.

What type of battery does my car need?

You need the make, model and engine. If your car has Start-Stop (the engine switches off at traffic lights), it needs an EFB or an AGM battery, depending on what it came with: if it has an AGM, fit another AGM; if it has an EFB, another EFB or an AGM. On cars with battery management (BMW, Mercedes, VAG group…), moving from EFB to AGM requires coding the new battery. Without Start-Stop, a conventional battery is fine, or an EFB or AGM if you want a longer life.

What is the difference between AGM, EFB and standard batteries?

A conventional (lead-acid) battery is for cars without Start-Stop. An EFB is a reinforced conventional battery for basic Start-Stop. An AGM offers the highest performance and is fitted as standard on cars with advanced Start-Stop, regenerative braking or high electrical demand. Replacement rule: an AGM only with another AGM; an EFB with another EFB or an AGM; a conventional battery with any of the three. Never move down in technology.

How do I find the right battery for my vehicle?

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.

What warranty do the batteries have?

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.

How long does it take for the battery to arrive?

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.

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BMW 3 Coupe 320 Cd

Batteries for BMW 3 Coupe 320 Cd 150 hp (diesel, 2003-2006)

BMW · 3 Coupe

Which battery does a BMW 3 Coupe 320 Cd need?

Specifications and battery: 320 Cd (150 hp)

BMW 3 Coupe 320 Cd (150 hp, diesel, 2003-2006): depending on the equipment, it takes a conventional 85 Ah, 800 A battery (315 × 175 × 175 mm) or a 80 Ah, 800 A AGM battery (315 × 175 × 190 mm). Measure your current battery before choosing. In every case the positive terminal is on the right.

Brand: BMW
Model: 3 Coupe (E46)
Built: 11/2003 - 07/2006
Power: 110 kW / 150 hp
Fuel: Diesel
Engine size: 1,995 cc (2 L)
Cylinders: 4
Body type: Coupe
Drive: Rear-Wheel Drive
Engine codes: M47 D20 (204D4)

Battery for this engine

Version	Technology	Capacity	Cold cranking (EN)	Size (L×W×H)	Polarity
Depending on equipment 1	Conventional	85 Ah	800 A	315 × 175 × 175 mm	+ on the right
Depending on equipment 2	AGM	80 Ah	800 A	315 × 175 × 190 mm	+ on the right

Data: vehicle specifications and the battery manufacturer's application catalogue.

🔧 Battery Expert Advisor

Battery analysis for your BMW 3 Coupe 320 Cd

Quick answer Depending on the equipment, your car uses one of these two main batteries: ordinary lead-acid 85 Ah (315×175×175 mm), for which we recommend VARTA F18, or AGM 80 Ah (315×175×190 mm): VARTA A6. Before buying, check the Ah on your current battery's label or measure its length.

Batteries in your BMW 3 Coupe 320 Cd

MainDepends on equipmentSee all in the list →

Measure the height of yours: 175 or 190 mm

Our recommendation

VARTA F18

ordinary lead-acid85 Ah800 A

315 × 175 × 175 mm

€97.80Buy

Alternative

VARTA A6

AGM80 Ah800 A

315 × 175 × 190 mm

€149.95Buy

Prices and availability updated on 26/10/2026

Based on the batteries we found for your vehicle, our experts help you pick the right one.

📋 What we found

For your BMW 3 Coupe 320 Cd we found 6 compatible batteries. This list includes 3 Start-Stop batteries and 3 conventional batteries (non Start-Stop).

📏 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.

⚡ Battery type for your vehicle

✓ Your BMW 3 Coupe 320 Cd does not need a Start-Stop battery. The conventional ones shown fit your vehicle and are the most affordable option. If you want a higher-quality, longer-lasting battery, you can also fit an EFB or AGM as an upgrade — they are fully compatible and last more years.

🔋 Technology (AGM / EFB)

Do you know whether your car's current battery is AGM or EFB?

Check your battery label: "AGM" or "VRLA" means AGM; "EFB" means EFB. If it says neither, it is probably conventional: on a Start-Stop car, ask us before buying. Never fit a conventional battery on a Start-Stop car, nor an EFB where an AGM was fitted.

Where do I check if my battery is AGM or EFB?

Can I fit an AGM if my car had EFB?

📊 View AGM vs EFB vs Conventional — full comparison

⭐ Our recommendation

Our recommendation

For your BMW 3 Coupe 320 Cd we recommend the VARTA F18 (ordinary lead-acid, 85 Ah). It also has the highest capacity (Ah) on the list — more autonomy to power consumers with the engine off and more reserve for prolonged loads. Varta is the world's leading manufacturer of starter batteries and supplies first-equipment (OEM) batteries to the major European car makers.

Rated 4.6/5 by 11 verified customers.
Get it on Wednesday before 5 PM — your product ships tomorrow.
35% cheaper than the most expensive option in the list.

See this battery →

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Verified selection

Class: Car Batteries
Brand: BMW
Model: 3 Coupe
Engine: 320 Cd

Order now with express shipping: your product ships tomorrow and arrives on Wednesday before 5 PM (Spain mainland and Portugal only).

Before you buy: check 3 key points

Although the batteries shown are sourced from information provided by manufacturers, we recommend checking on your current battery:

Dimensions (length × width × height, including terminals and protrusions)
The dimensions shown are the maximum of the battery and include the height of the terminals, small ridges at the base and any lateral protrusions. Measure your current battery completely, from edge to edge. The new one must be the same size or slightly smaller — never larger, it would not fit in the housing.
Positive terminal (left or right viewed from the front — check the battery photo carefully)
Stand facing the battery, with the manufacturer's label facing you and the terminals on top. Locate the terminal marked with +: if it is on your right, it is "positive right"; if it is on your left, it is "positive left". Do not rely on how the battery is mounted in the car — the position is always measured looking only at the battery itself.
Technology (AGM, EFB or conventional — the same as your current battery or higher)
Depending on the manufacturer, the same technology may be labelled differently: AGM may also appear as VRLA, AGM Start-Stop or AGM Deep Cycle. EFB may appear as EF, EFB+ or Enhanced Flooded Battery. Conventional may appear as SLI, Lead-Acid, Wet or Standard. If your vehicle has Start-Stop, the battery must be AGM or EFB — never conventional.

If you have any questions, just ask us and we'll be glad to advise you with no obligation.

Conventional Battery

This is a standard or conventional battery for vehicles without a start-stop system

3 products

Compare the technologies available for your car

A higher technology withstands more charge and discharge cycles, according to manufacturers. If your car has Start-Stop, it needs EFB or AGM.

Conventional (lead-acid) For normal use in cars without Start-Stop. from €85.60 View EXIDE EB800
EFB Up to 2× more cycles than a conventional battery. Good for short trips and city driving. from €89.90 +€4.30 View EXIDE EL800
AGM Up to 3× more cycles than a conventional battery. The highest performance, ideal with lots of electrical equipment. from €149.95 +€64.35 View VARTA A6

Recommended conventional
Car battery Varta F18 12V 85Ah 800A
- 12 V
- 85 Ah
- 800 A
Dimensions 315×175×175 mm
- ✓ Varta brand
€97.80
Compare
🔥 Most popular
Car battery Varta F17 12V 80Ah 740A
- 12 V
- 80 Ah
- 740 A
Dimensions 315×175×175 mm

€97.80
Compare
Car battery Exide EB800 12V 80Ah 640A
- 12 V
- 80 Ah
- 640 A
- Conventional
Dimensions 315×175×190 mm

€85.60
Compare

Comparison table of available products
Category	Make	Reference	Capacity	Cold cranking	Dimensions	Technology	Price
Conventional Battery	VARTA	F18	85 Ah	800 A	315×175×175 mm	Conventional	€97.80	More info
Conventional Battery	VARTA	F17	80 Ah	740 A	315×175×175 mm	Conventional	€97.80	More info
Conventional Battery	EXIDE	EB800	80 Ah	640 A	315×175×190 mm	Conventional	€85.60	More info

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.

3 products

Comparison table of available products
Category	Make	Reference	Capacity	Cold cranking	Dimensions	Technology	Price
Start-Stop & high energy demand batteries	VARTA	A6	80 Ah	800 A	315×175×190 mm	AGM	€149.95	More info
Start-Stop & high energy demand batteries	EXIDE	EL800	80 Ah	800 A	315×175×190 mm	EFB	€89.90	More info
Start-Stop & high energy demand batteries	TUDOR	TL800	80 Ah	800 A	315×175×190 mm	EFB	€96.30	More info

Complete your purchase

Chargers

Chargers for your battery

1 product

Battery charger ABSAAR Pro4.0 6/12V 4A Smart Charger
- 6 V
€50.60

Frequently asked questions

: Yes, you can install a higher capacity (Ah) battery as long as the physical dimensions fit your BMW 3 Coupe 320 Cd battery compartment and the positive terminal position matches.
: The Bmw 3 Coupe 320 Cd requires a battery with the correct capacity (Ah) and Cold Cranking Amps (CCA) for this engine. Compatible batteries offer 80-85 Ah, 740-800 A (CCA), 12 V, case T7/LB4, conventional flooded technology. Browse the compatible battery list below.
: The exact Ah rating for the Bmw 3 Coupe 320 Cd depends on the vehicle's original electrical consumers. Compatible batteries offer 80-85 Ah, 740-800 A (CCA), 12 V, case T7/LB4, conventional flooded technology. Use our finder for a precise recommendation.
: You need the make, model and engine. If your car has Start-Stop (the engine switches off at traffic lights), it needs an EFB or an AGM battery, depending on what it came with: if it has an AGM, fit another AGM; if it has an EFB, another EFB or an AGM. On cars with battery management (BMW, Mercedes, VAG group…), moving from EFB to AGM requires coding the new battery. Without Start-Stop, a conventional battery is fine, or an EFB or AGM if you want a longer life.
: A conventional (lead-acid) battery is for cars without Start-Stop. An EFB is a reinforced conventional battery for basic Start-Stop. An AGM offers the highest performance and is fitted as standard on cars with advanced Start-Stop, regenerative braking or high electrical demand. Replacement rule: an AGM only with another AGM; an EFB with another EFB or an AGM; a conventional battery with any of the three. Never move down in technology.
: 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.

Guides

: This vehicle has no Start-Stop. According to the manufacturer, it does not need to be registered after the change.

Batteries for BMW 3 Coupe 320 Cd 150 hp (diesel, 2003-2006)

Which battery does a BMW 3 Coupe 320 Cd need?