The 2004 BMW 325xi uses a 12-volt battery. Most replacements for this model are around 70–90 amp-hours and typically come in the Group 48/H6 size, with some cars equipped with an AGM variant. Always verify the exact specification on the battery label or from the vehicle’s VIN/parts catalog.
Battery types and capacity for the 2004 325xi
There are two common configurations you might encounter for this era of BMW 3 Series: a standard flooded lead-acid battery or an optional AGM (absorbed glass mat) battery. The capacity is usually in the 70–90 Ah range, with cold-cranking amps (CCA) typically between about 650 and 900 A depending on the exact size.
- 12V flooded lead-acid battery, typically around 70–90 Ah
- 12V AGM battery, often used in cars with more electronics or optional equipment, similar 70–90 Ah range
- Cold-cranking amps (CCA) commonly in the 650–900 A range, depending on the battery size
In practice, most replacements for a 2004 325xi align with the Group 48/H6 sizing and a nominal capacity near 90 Ah, but always confirm with the car’s battery label or a parts lookup using your VIN.
How to identify the correct battery for your car
To ensure you choose a compatible battery, use the following verification steps.
- Check the owner's manual or the battery label for the exact group size (for example, 48/H6) and the recommended CCA and Ah rating.
- Inspect the current battery: look for a label on the top or side that lists the group size and CCA.
- Use your VIN to pull the BMW parts catalog or consult with a dealer/parts retailer to confirm the factory-recommended battery type (flooded vs AGM).
- Consider aftermarket options that specify compatibility with 2004 E46 3 Series, and ensure they match the group size and electrical requirements of your vehicle.
If you’re unsure, a BMW dealer or reputable auto parts supplier can confirm the exact battery specification for your specific vehicle configuration. Choosing the wrong type (flooded vs AGM) can affect charging and on-board electronics.
Installation tips and care
When replacing the battery, ensure the vehicle’s electrical system is disconnected properly, terminals are clean, and the correct polarity is observed. If your car has an AGM battery, use a compatible charger and avoid standard low-current charging tools that aren’t designed for AGM batteries. After installation, reset any necessary electronics as directed in the manual or by a technician.
Summary
For a 2004 BMW 325xi, you’ll typically be dealing with a 12-volt battery in the 70–90 Ah range, most commonly Group 48/H6. Some vehicles may use an AGM variant. Always verify the exact group size, capacity, and type via the battery label, VIN-based parts lookup, or a trusted parts professional to ensure proper fit and performance.
Where is the battery in a BMW 325xi?
And that's loose. Slide off the cable. Slide it out of the way with that off now I can loosen up the positive side the same 10 mm socket ratchet loosen this up take off the positive cable.
What battery for BMW E46?
Battery For BMW 3 Series E46 M3 3.2 Exide AGM 12V 72Ah 760CCA Type AGM096.
What battery does a BMW 3 series use?
Diesel
| Engine | Battery | |
|---|---|---|
| 3 Series (E46) | 320d Saloon | 096 |
| 3 Series (E90) | 320d Saloon | 019 |
| 3 Series (E90) | 320d Saloon | 110 |
| 3 Series (E92) | 320d xDrive Coupe | 019 |
What kind of battery does a 2004 BMW 325xi take?
Super Start Platinum AGM Top Post Battery Group Size 49 H8 850 CCA 170 Minute RC - 49PLT.