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

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

What battery fits the Bmw 3 320 I?

The Bmw 3 320 I requires a battery with the correct capacity (Ah) and Cold Cranking Amps (CCA) for this engine. Compatible batteries offer 70-95 Ah, 760-850 A (CCA), 12 V, case H6/L3, conventional flooded and Start-Stop (EFB/AGM) technology. Browse the compatible battery list below.

How many Ah does the Bmw 3 320 I battery need?

The exact Ah rating for the Bmw 3 320 I depends on the vehicle's original electrical consumers. Compatible batteries offer 70-95 Ah, 760-850 A (CCA), 12 V, case H6/L3, conventional flooded and Start-Stop (EFB/AGM) technology. Use our finder for a precise recommendation.

How long does a battery last in a Bmw 3 320 I?

With normal use, a battery for the Bmw 3 320 I lasts 3–5 years. A healthy alternator and avoiding deep discharges significantly extend battery life.

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.

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BMW 3 320 i

Batteries for BMW 3 320 i 156 hp (petrol, 2007-2011)

All engines and prices for this model: battery BMW 3 Series →

BMW · 3

Which battery does a BMW 3 320 i need?

Specifications and battery: 320 i (156 hp)

BMW 3 320 i (156 hp, petrol, 2007-2011): depending on the equipment, it takes a 95 Ah, 850 A AGM battery (353 × 175 × 190 mm) or a 70 Ah, 760 A AGM battery (278 × 175 × 190 mm). Measure your current battery before choosing. In every case the positive terminal is on the right. (N46 B20 C, N46 B20 B, N46 B20 CC, N46 B20 CD, N46 B20 E)

Recommended battery for this engine Start-Stop battery Varta A5 12V 95Ah 850A AGM €179.99 incl. VAT

View battery →

Brand: BMW
Model: 3 (E90)
Built: 02/2007 - 2011
Power: 115 kW / 156 hp
Fuel: Petrol
Engine size: 1,995 cc (2 L)
Cylinders: 4
Body type: Saloon
Drive: Rear-Wheel Drive
Engine codes: N46 B20 C, N46 B20 B, N46 B20 CC, N46 B20 CD, N46 B20 E
Start-Stop battery: Depends on version

Battery for this engine

Version	Technology	Capacity	Cold cranking (EN)	Size (L×W×H)	Polarity
Depending on equipment 1	AGM	95 Ah	850 A	353 × 175 × 190 mm	+ on the right
Depending on equipment 2	AGM	70 Ah	760 A	278 × 175 × 190 mm	+ on the right

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

EFB, AGM or conventional for this engine?

It depends on the version of the BMW 3 320 i: if the engine switches itself off at traffic lights it has Start-Stop and needs AGM of around 95 Ah; if not, the conventional battery in the table is fine. If in doubt, check the label on the battery fitted now and never go down a technology level.

🔧 Battery Expert Advisor

Battery analysis for your BMW 3 320 i

Quick answer Depending on the equipment, your car uses one of these two main batteries. The most common option is AGM 95 Ah (353×175×190 mm): we recommend VARTA A5. Other units use AGM 70 Ah (278×175×190 mm): VARTA A7. Before buying, check the Ah on your current battery's label or measure its length.

Batteries in your BMW 3 320 i

MainDepends on equipmentSee all in the list →

Measure the length of yours: 353 or 278 mm

Recommended

VARTA A5

AGM95 Ah850 A

353 × 175 × 190 mm

€179.99Buy

Alternative

VARTA A7

AGM70 Ah760 A

278 × 175 × 190 mm

€134.95Buy

Prices and availability updated on 30/10/2026

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

📋 What we found

For your BMW 3 320 i we found 4 compatible Start-Stop 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.

⚡ Battery type for your vehicle

✓ Your BMW 3 320 i uses the Start-Stop system. Every battery shown is compatible — no conventional options to confuse you.

🔋 Technology (AGM / EFB)

✓ All Start-Stop batteries in the list are AGM. If your current battery is AGM, this is the right replacement. If it is EFB, an AGM is also a valid upgrade, but on cars with battery management (BMW, Mercedes, VAG group…) it must be registered and coded for the new technology with a diagnostic tool; otherwise the car keeps charging it as an EFB.

📊 View AGM vs EFB vs Conventional — full comparison

⭐ Our recommendation

Our recommendation

For your BMW 3 320 i we recommend the VARTA A5 (AGM, 95 Ah). It's the battery recommended by the vehicle manufacturer for your BMW 3 320 i — 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.

Rated 3.9/5 by 7 verified customers.
Get it on Tuesday before 5 PM — your product ships on Monday.

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Verified selection

Class: Car Batteries
Brand: BMW
Model: 3
Engine: 320 i

Order now with express shipping: your product ships on Monday and arrives on Tuesday 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.

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.

4 products

This engine comes with an AGM/EFB battery as standard: the car's charging system requires it even without Start-Stop. If in doubt, message us and we will confirm.

Comparison table of available products
Category	Make	Reference	Capacity	Cold cranking	Dimensions	Technology	Price
Start-Stop & high energy demand batteries	VARTA	A5	95 Ah	850 A	353×175×190 mm	AGM	€179.99	More info
Start-Stop & high energy demand batteries	VARTA	A7	70 Ah	760 A	278×175×190 mm	AGM	€134.95	More info
Start-Stop & high energy demand batteries	EXIDE	EK960	96 Ah	850 A	353×175×190 mm	AGM	€140.10	More info
Start-Stop & high energy demand batteries	TUDOR	TK960	96 Ah	850 A	353×175×190 mm	AGM	€142.70	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 3 320 i battery compartment and the positive terminal position matches.
: The Bmw 3 320 I requires a battery with the correct capacity (Ah) and Cold Cranking Amps (CCA) for this engine. Compatible batteries offer 70-95 Ah, 760-850 A (CCA), 12 V, case H6/L3, conventional flooded and Start-Stop (EFB/AGM) technology. Browse the compatible battery list below.
: The exact Ah rating for the Bmw 3 320 I depends on the vehicle's original electrical consumers. Compatible batteries offer 70-95 Ah, 760-850 A (CCA), 12 V, case H6/L3, conventional flooded and Start-Stop (EFB/AGM) technology. Use our finder for a precise recommendation.
: With normal use, a battery for the Bmw 3 320 I lasts 3–5 years. A healthy alternator and avoiding deep discharges significantly extend battery life.
: 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.
: 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

: Depending on the version, this vehicle uses a conventional or a Start-Stop battery (AGM or EFB). Some versions require the new battery to be registered via OBD and, if you change technology, coded.

Batteries for BMW 3 320 i 156 hp (petrol, 2007-2011)

Which battery does a BMW 3 320 i need?