How to disconnect and reconnect batteries on BMW 325i?

Always disconnect the cable from the negative battery terminal first and hook it up last to avoid shorting the battery. The negative cable connector of the battery has an Intelligent Battery Sensor (IBS), so do not pry under it or attach any other ground wires to the negative cable end. Some systems on the vehicle require battery power to be available at all times, such as the alarm system, power door locks, or to maintain control unit memory. When the battery is disconnected, the power that maintains these systems is cut. Therefore, remove the key from the ignition and keep it with you to avoid it getting locked inside. Devices known as "memory-savers" can be used to avoid some of these problems. The typical memory saver is plugged into the cigarette lighter and is connected to a spare battery. Then the vehicle battery can be disconnected from the electrical system. To disconnect the battery, loosen the cable end bolt and disconnect the cable from the negative battery terminal. Isolate the cable end to prevent accidental contact with the battery terminal. After reconnecting the battery, several of the vehicle's electronic control modules will require time to relearn certain values. This will normally be complete within a normal driving pattern of 15 miles. In addition, several systems may require re-initialization. For the sunroof, press the sunroof operating switch into the tilt position and hold it there. Once the sunroof has reached the fully tilted position, hold the switch in that position for approximately 20 seconds. Initialization is complete when the sunroof briefly lifts at the rear again. For electric windows, operate the button to fully close the window, then continue to hold the button for at least 1 second to normalize the auto stop function.

Genuine BMW 325i Batteries

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20 Batteries found

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BMW 325i Ep Battery 70Ah
Part Number: 61212353806
$108.08 MSRP: $145.00
You Save: $36.92 (26%)
Product Specifications
- Replaced by: 61212353817
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2006 BMW 325i | Sedan M54 Engine(E46), Sedan(E46), Sedan(E90), Wagon M56 Engine(E46)
View related parts
BMW 325i Ep Battery 80Ah
Part Number: 61212353808
$151.99 MSRP: $195.00
You Save: $43.01 (23%)
Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2006 BMW 325i | Sedan M54 Engine(E46), Sedan(E46), Sedan(E90), Wagon M54 Engine(E46), Wagon M56 Engine(E46), Wagon(E46)
View related parts
BMW 325i Ep Battery 70Ah
Part Number: 61212353811
$198.32 MSRP: $247.10
You Save: $48.78 (20%)
Product Specifications
- Replaced by: 61215A40E19
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006 BMW 325i | Sedan(E90)
View related parts
BMW 325i Ep Battery 80Ah
Part Number: 61212353813
$204.81 MSRP: $255.21
You Save: $50.40 (20%)
Product Specifications
- Replaced by: 61215A40E31
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2003-2006 BMW 325i | Sedan(E90), Wagon M56 Engine(E46)
View related parts
BMW 325i Battery, Manuf.: Exide (Warranty Only)
Part Number: 61217586962
$139.89 MSRP: $158.33
You Save: $18.44 (12%)
Product Specifications
- Other Name: Battery
- Replaces: 61-21-6-946-334
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006 BMW 325i | Sedan(E90)
View related parts
BMW 325i Battery, Manuf.: Exide (Warranty Only)
Part Number: 61217586961
$139.89 MSRP: $158.33
You Save: $18.44 (12%)
Product Specifications
- Other Name: Battery
- Replaces: 61-21-6-946-333
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2006 BMW 325i | Sedan M54 Engine(E46), Sedan M56 Engine(E46), Sedan(E46), Sedan(E90), Wagon M54 Engine(E46), Wagon M56 Engine(E46), Wagon(E46)
View related parts
BMW 325i Battery, Manuf.: Exide (Warranty Only)
Part Number: 61217553952
$146.66 MSRP: $166.00
You Save: $19.34 (12%)
Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2005 BMW 325i | Sedan M54 Engine(E46), Sedan M56 Engine(E46), Sedan(E46), Wagon M54 Engine(E46), Wagon M56 Engine(E46), Wagon(E46)
View related parts
BMW 325i Battery, Manuf.: Exide (Warranty Only)
Part Number: 61217567182
$110.90 MSRP: $123.42
You Save: $12.52 (11%)
Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1992-1995 BMW 325i | Sedan(E36)
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BMW 325i Battery, Manuf.: Exide (Warranty Only)
Part Number: 61217567181
$100.82 MSRP: $112.21
You Save: $11.39 (11%)
Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1987-1992 BMW 325i | Convertible(E30), Coupe(E30), Sedan(E30)
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BMW 325i Battery, Manuf.: Douglas (Warranty Only)
Part Number: 61218381720
$98.54 MSRP: $117.50
You Save: $18.96 (17%)
Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1992-1995 BMW 325i | Sedan(E36)
View related parts
BMW 325i Ep Battery 92Ah
Part Number: 61212353812
$229.22 MSRP: $313.32
You Save: $84.10 (27%)
Product Specifications
- Replaced by: 61215A40E29
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2003-2006 BMW 325i | Sedan M56 Engine(E46), Sedan(E90), Wagon M56 Engine(E46)
View related parts
BMW 325i Battery, Manuf.: Douglas (Warranty Only)
Part Number: 61218381738
$103.15 MSRP: $123.00
You Save: $19.85 (17%)
Product Specifications
- Other Name: Battery
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2006 BMW 325i | Sedan M54 Engine(E46), Sedan M56 Engine(E46), Sedan(E46), Sedan(E90), Wagon M54 Engine(E46), Wagon M56 Engine(E46), Wagon(E46)
View related parts
BMW 325i Battery, Manuf.: Douglas (Warranty Only)
Part Number: 61218353651
Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1992-1995 BMW 325i | Sedan(E36)
View related parts
BMW 325i Battery, Manuf.: Douglas (Warranty Only)
Part Number: 61218381749
$114.05 MSRP: $136.00
You Save: $21.95 (17%)
Product Specifications
- Other Name: Battery
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2006 BMW 325i | Sedan M54 Engine(E46), Sedan M56 Engine(E46), Sedan(E46), Sedan(E90), Wagon M54 Engine(E46), Wagon M56 Engine(E46), Wagon(E46)
View related parts
BMW 325i Battery, Manuf.: Douglas (Warranty Only)
Part Number: 61218381762
$119.15 MSRP: $144.50
You Save: $25.35 (18%)
Product Specifications
- Other Name: Battery
- Replaces: 61-21-8-361-827
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006 BMW 325i | Sedan(E90)
View related parts
BMW 325i Battery, Manuf.: Douglas (Warranty Only)
Part Number: 61218381722
Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1993-1995 BMW 325i | Convertible(E36)
View related parts
BMW 325i Battery, Manuf.: Douglas (Warranty Only)
Part Number: 61218361050
Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1993-1995 BMW 325i | Convertible(E36)
View related parts
BMW 325i Battery, Manuf.: Exide (Warranty Only)
Part Number: 61217567183
Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1993-1995 BMW 325i | Convertible(E36)
View related parts
BMW 325i Battery, Manuf.: Douglas (Warranty Only)
Part Number: 61218376379
Product Specifications
- Other Name: Battery
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1987-1992 BMW 325i | Convertible(E30), Coupe(E30), Sedan(E30)
View related parts
BMW 325i Battery, Manuf.: Exide (Warranty Only)
Part Number: 61217586960
$174.96 MSRP: $218.41
You Save: $43.45 (20%)
Product Specifications
- Other Name: Battery
- Replaces: 61-21-6-946-332
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2006 BMW 325i | Sedan M54 Engine(E46), Sedan M56 Engine(E46), Sedan(E46), Sedan(E90), Wagon M54 Engine(E46), Wagon M56 Engine(E46), Wagon(E46)

BMW 325i Batteries

BMW 325i Batteries provide the car with the sudden flow of electricity it requires to turn the engine to the crank to start and provide fuel. They also power components when the engine is not in use. Within the electrical architecture of BMW, these Batteries contain six lead acid cells that produce 12 volts, which provide excellent cold cranking amps for cold mornings and reserve capacity to keep the lights, audio, and memory circuits powered when alternator output drops. Early 325i models rolled with traditional flooded lead acid Batteries and were subject to the need for occasional water top-offs. Later, BMW incorporated maintenance-free flooded Batteries and sealed absorbed glass mat Batteries as improvements in both parts to curtail evaporation, resist vibration, and allow the bank to discharge deeper. AGM units contain the electrolyte within fiberglass mats for faster current flow, and the sealed FLA option follows the familiar plate layout but sacrifices a little bit of durability for a lower price. Regardless of type, every BMW 325i system depends on its battery to serve as an SLI power source, providing a leveling effect for voltage spikes, providing additional current during high demand beyond charging, and giving city or snow-bound 325i drivers an assured start.

If you are looking for OEM BMW 325i Batteries, we highly recommend to shop with us. Not only do we offer budget friendly prices, but we also provide fast delivery. In addition, we have a hassle-free return policy on all genuine BMW 325i Batteries that come backed by the manufacturer's warranty.

BMW 325i Batteries Parts Questions & Experts Answers

Battery, Manuf.: Exide (Warranty Only)
61217586962
Q:
How to disconnect and reconnect batteries on BMW 325i?
Posted by Louis H.
A:
Always disconnect the cable from the negative battery terminal first and hook it up last to avoid shorting the battery. The negative cable connector of the battery has an Intelligent Battery Sensor (IBS), so do not pry under it or attach any other ground wires to the negative cable end. Some systems on the vehicle require battery power to be available at all times, such as the alarm system, power door locks, or to maintain control unit memory. When the battery is disconnected, the power that maintains these systems is cut. Therefore, remove the key from the ignition and keep it with you to avoid it getting locked inside. Devices known as "memory-savers" can be used to avoid some of these problems. The typical memory saver is plugged into the cigarette lighter and is connected to a spare battery. Then the vehicle battery can be disconnected from the electrical system. To disconnect the battery, loosen the cable end bolt and disconnect the cable from the negative battery terminal. Isolate the cable end to prevent accidental contact with the battery terminal. After reconnecting the battery, several of the vehicle's electronic control modules will require time to relearn certain values. This will normally be complete within a normal driving pattern of 15 miles. In addition, several systems may require re-initialization. For the sunroof, press the sunroof operating switch into the tilt position and hold it there. Once the sunroof has reached the fully tilted position, hold the switch in that position for approximately 20 seconds. Initialization is complete when the sunroof briefly lifts at the rear again. For electric windows, operate the button to fully close the window, then continue to hold the button for at least 1 second to normalize the auto stop function.
Answered by BMW Parts Specialist Brad / Dec 02, 2025