Best Battery For Bmw 328I: Compare 10 Replacement Batteries

#1 · Best Overall

1. Marxon Group 49 AGM

• Compatible with Vehicle Type: Passenger Car

Best for: Maintenance-free Group 49 option.

Why it ranks #1: The listing explicitly names BMW and specifies a 12V, 95Ah, 900CCA AGM battery in BCI 49/H8 dimensions, though exact vehicle fit still needs confirmation.

Maintenance-free AGM construction is the defining feature of this MARXON Group 49 battery, giving buyers a listed battery type without routine maintenance requirements. Its 95Ah capacity and 900 CCA rating establish a useful performance profile, while the stated H8/L5 dimensions help shoppers compare its footprint with the battery already installed in a BMW 328i.

The 12V, 95Ah AGM specification and 900 CCA rating give shoppers two concrete measures to compare when considering a replacement. Its dimensions are 13.9 by 6.89 by 7.48 inches, and the listing identifies it as BCI 49, DIN H8, and L5; those labels and measurements support a direct size comparison with the existing battery. The maintenance-free description also means routine battery maintenance is not part of the stated ownership requirements. MARXON notes that vehicle battery requirements can vary by model.

Skip it if you want a listed reserve-capacity figure; the WEIZE Platinum AGM QTF-95 specifies 160 minutes.

This MARXON suits a shopper seeking a maintenance-free Group 49 AGM with stated capacity and cranking figures. Its dimensions and size labels are useful comparison points, but check the current battery and vehicle-specific requirements before choosing it for a 328i.

Listed on Amazon as: Marxon Group 49 Car Battery 12v 95AH 900CCA H8 AGM Batteries Maintenance Free Automotive Start Stop Replacement L5 Battery for Audi BMW Ford Toyota Mercedes-Benz Volvo

#2 · High Capacity

2. WEIZE Platinum AGM

• Voltage: 12 V DC
• Compatible with Vehicle Type: Passenger Car
• Dimensions D x W x H: 6.89"D x 13.9"W x 7.48"H

Best for: Group 49 AGM replacement.

Why it ranks #2: Its Group 49 H8 format, 95Ah capacity, 900CCA rating, and 13.9-inch length closely match the leading option's listed specifications.

A 900-CCA rating paired with 95Ah capacity gives this WEIZE Group 49 AGM a clear starting-power and capacity profile. Its H8/BCI Group 49 format helps shoppers compare it with a BMW 328i battery by size class, while the listed dimensions provide a concrete reference for checking the battery compartment and installation requirements.

This 12-volt battery measures 13.9 by 6.89 by 7.48 inches, giving buyers specific dimensions to compare against the vehicle’s existing battery and available tray space. Its Group 49/H8 size designation and 900 CCA rating help narrow the search to a matching size class while indicating its stated cold-cranking output. At 56.4 pounds, it is a substantial item to handle during installation. The listed 160-minute reserve capacity adds another useful specification for comparing options.

Skip it if you need a different battery size; the ACDelco Gold 48AGM is listed as Group 48, not Group 49.

A BMW 328i owner comparing Group 49 AGM options can use the stated dimensions, capacity, and cranking rating to assess this WEIZE. Treat the size designation as a starting point, and compare it with the car’s current battery before buying.

Listed on Amazon as: Weize Platinum AGM Battery BCI Group 49-12v 95ah H8 Size 49 Automotive Battery, 160RC, 900CCA, 36 Months Warranty, Dimensions 13.9" L x 6.89" W x 7.48" H

#3 · Group 49 Alternative

3. ACDelco Gold 49AGM

• Voltage: 12 V
• Compatible with Vehicle Type: Passenger Car
• Dimensions D x W x H: 6.9"D x 13.9"W x 7.5"H

Best for: ACDelco Group 49 AGM.

Why it ranks #3: This AGM Group 49 battery measures 13.9 inches long and includes a 36-month free-replacement limited warranty, but has no listed Ah or CCA.

A Group 49 designation paired with a 13.9-by-6.9-by-7.5-inch footprint makes this ACDelco Gold 49AGM straightforward to compare against a BMW 328i’s existing battery. Its silver-calcium stamped alloy is listed as improving cycle life, while the puncture-resistant separator supports acid circulation and helps prevent shorts—useful construction details beyond the size match.

This 12-volt passenger-car battery’s Group 49 label and dimensions provide specific fit-comparison points before installation. Its high-density negative paste is described as improving performance and battery life, while the silver-calcium stamped alloy is linked to increased cycle life. The puncture-resistant envelope separator allows increased acid circulation and helps prevent shorts; the listing also says improved circulation helps the battery remain cool. Together, those details make its construction relevant to shoppers weighing an AGM replacement for repeated cycling.

Skip it if you need a listed 900 CCA figure; the WEIZE Platinum AGM QTF-95 specifies 900 CCA.

This ACDelco is a practical comparison for BMW 328i shoppers seeking a Group 49 AGM with specified dimensions and cycling-related construction details. Its 58.6-pound weight matters when planning installation, and the size should still match the battery already fitted.

Listed on Amazon as: ACDelco Gold 49AGM (88864539) 36 Month Warranty AGM BCI Group 49 Battery

#4 · High Reserve

4. ACDelco Gold 49AGMHR

• Voltage: 12 V DC
• Compatible with Vehicle Type: Passenger Car
• Dimensions D x W x H: 7.5"D x 13.9"W x 6.9"H

Best for: High-reserve Group 49 AGM.

Why it ranks #4: It is another Group 49 AGM option with a listed 36-month free-replacement limited warranty; its 7.5-by-13.9-by-6.9-inch dimensions differ from standard examples.

The 49AGMHR’s high-reserve designation sets this ACDelco apart within the Group 49 choices, while its 13.9-by-7.5-by-6.9-inch dimensions offer a precise footprint for comparison. A BMW 328i shopper can use those measurements and its 55.6-pound weight to assess space and handling, but the listing supplies no reserve-capacity figure.

This 12-volt passenger-car AGM is identified as Group 49 and measures 13.9 by 7.5 by 6.9 inches. Those specifications help shoppers compare its footprint with the battery already in the vehicle and plan how to handle its 55.6-pound weight during installation. ACDelco describes the part as meeting fit, form, and function specifications for General Motors vehicles and most makes and models. Although the model name includes “High Reserve,” no reserve-capacity number is provided for direct comparison.

Skip it if you need a stated reserve-capacity number; the WEIZE Platinum AGM QTF-95 lists 160 minutes.

This ACDelco is for shoppers comparing a Group 49 AGM whose high-reserve designation and dimensions fit their selection criteria. Its lack of a numerical reserve-capacity figure is a meaningful boundary, so compare documented specifications with the BMW’s current battery.

Listed on Amazon as: ACDelco Gold 49AGMHR (88866099) 36 Month Warranty High Reserve AGM BCI Group 49 Battery

#5

5. ACDelco Gold 94RAGM

• Voltage: 12 V
• Compatible with Vehicle Type: attribute not appiicable to product
• Dimensions D x W x H: 6.9"D x 12.4"W x 7.5"H

Best for: Group 94R high-cycling AGM.

Why it ranks #5: This 12V AGM battery has a 36-month free-replacement limited warranty, but its Group 94R format and 12.4-inch length differ from Group 49 choices.

High-density plate oxide is the key distinction listed for the ACDelco Gold 94RAGM, with the product description linking it to power per pound and dependable high-cycling service. Its Group 94R designation and 12.4-by-6.9-by-7.5-inch dimensions give BMW 328i shoppers concrete details for comparing this battery against their current size and available space.

This 12-volt AGM measures 12.4 by 6.9 by 7.5 inches, providing a defined footprint for a tray-space comparison before installation. Its Group 94R size label is an important check against the car’s existing battery rather than an assumed fit. A high-density negative paste and silver-calcium stamped alloy are described as improving performance and cycle life, while the calcium-lead positive grid is said to maximize conductivity and allow low resistance. Together, these features explain the product’s high-cycling focus.

Skip it if you need a Group 49 replacement; the WEIZE Platinum AGM QTF-95 is listed as Group 49/H8.

This ACDelco is a comparison candidate for shoppers whose existing battery calls for Group 94R and who want the listed high-cycling construction. Its dimensions and size class are the main fit boundaries; verify those against the battery already in the BMW.

Listed on Amazon as: ACDelco Gold 94RAGM (88864542) 36 Month Warranty AGM BCI Group 94R Battery

#6

6. ACDelco Gold 48AGM

• Voltage: 12 V
• Compatible with Vehicle Type: Truck
• Dimensions D x W x H: 7.5"D x 11.9"W x 7.6"H

Best for: Group 48 cycling-focused AGM.

Why it ranks #6: The Group 48 AGM measures 11.9 by 7.5 by 7.6 inches and has a 36-month warranty, but its size differs from Group 49.

A puncture-resistant envelope separator is a concrete feature of the ACDelco Gold 48AGM, intended to allow acid circulation and help prevent shorts. That construction, alongside its stated high cycling capability, makes it an option to compare for start-stop use; its Group 48 size and dimensions let BMW 328i shoppers assess the size class separately.

The 48AGM’s 11.9-by-7.5-by-7.6-inch dimensions and Group 48 designation give shoppers a specific footprint to compare with the battery currently in the car. Its puncture-resistant separator supports acid circulation and helps prevent shorts, while improved acid circulation is also described as helping the battery remain cool. The product description says the AGM design is leak- and spill-proof and notes high cycling capability and charge receptivity for start-stop applications. Those details are useful when comparing battery construction and intended operating use.

Skip it if you need a Group 49 battery; the ACDelco Gold 49AGM is explicitly listed in that size class.

Consider this ACDelco for a buyer whose existing battery calls for Group 48 and who values the listed AGM construction and cycling features. The product’s size differs from Group 49, so use the current battery’s size as the deciding boundary.

Listed on Amazon as: ACDelco Gold 48AGM (88864541) 36 Month Warranty AGM BCI Group 48 Battery

#7

7. Interstate MTX-48/H6

• Voltage: 12 V
• Compatible with Vehicle Type: Passenger Car, Truck, SUV
• Dimensions D x W x H: 11"D x 6.94"W x 7.5"H

Best for: Pure-lead Group 48 AGM.

Why it ranks #7: Its Group 48/H6 AGM provides 70Ah, 760CCA, and a 36-month performance warranty, but the listed format is smaller than Group 49.

Interstate identifies this MTX-48/H6 as an automotive pure-lead AGM, a defining construction detail for shoppers comparing start-stop batteries. The listing also states 70Ah capacity and 760 CCA, giving BMW 328i owners concrete figures to weigh against their current battery’s requirements, while its Group 48 dimensions help establish the physical size to check.

The 12-volt battery measures 11 by 6.94 by 7.5 inches and is identified as Group 48, giving buyers a clear size reference for comparison with the installed unit. Its stated 70Ah capacity and 760 CCA rating provide specific electrical figures to consider alongside vehicle requirements. Interstate describes the MTX AGM as using more lead and says it meets or exceeds starting requirements while powering accessories. The listing calls it a start-stop vehicle battery, making that use case part of the comparison.

Skip it if you need a listed 95Ah battery; the MARXON Group 49 MX-BCI-49 specifies 95Ah and 900 CCA.

This Interstate suits shoppers comparing a pure-lead Group 48 AGM for a start-stop vehicle, with capacity and CCA figures clearly stated. Its Group 48 size and 70Ah rating are boundaries to check against the BMW’s current battery and electrical requirements.

Listed on Amazon as: Interstate Batteries Car Battery 12V 70Ah 760CCA Group H6, 48 AGM

#8

8. ACDelco Gold 51RAGM

• Compatible with Vehicle Type: Passenger Car

Best for: Group 51R fit-form option.

Why it ranks #8: This AGM is identified as Group 51R and intended for passenger cars, but the listing provides no dimensions, CCA, or capacity for comparison.

ACDelco lists this Gold 51RAGM as a Group 51R AGM battery manufactured to meet fit, form, and function specifications for General Motors vehicles and most makes and models. That stated fit-and-form scope gives shoppers a starting point for screening; the product’s 32-pound weight is another concrete detail when planning handling and installation.

The Group 51R designation is the main size reference supplied for this ACDelco, so buyers can compare it with the battery currently installed before planning a replacement. Its AGM type and stated 32-pound weight provide additional product details for evaluating the option and handling it during installation. ACDelco says the battery is manufactured to meet fit, form, and function specifications for General Motors vehicles as well as most makes and models. That broad statement does not establish a specific BMW 328i fit.

Skip it if you need stated capacity and CCA figures; the WEIZE Platinum AGM QTF-95 lists 95Ah and 900 CCA.

This ACDelco may suit shoppers comparing a Group 51R AGM whose fit-and-form description covers many makes and models. For a BMW 328i, the size designation is a boundary to check, and the listing’s missing capacity and CCA figures limit output comparisons.

Listed on Amazon as: ACDelco Gold 51RAGM (88866315) 36 Month Warranty AGM BCI Group 51R Car Battery

#9

9. OPTIMA 35 REDTOP

• Voltage: 12 V
• Compatible with Vehicle Type: Passenger Car, Truck
• Dimensions D x W x H: 6.75"D x 9.38"W x 7.69"H

Best for: Compact high-cranking battery.

Why it ranks #9: It offers 720CCA and 90 minutes of reserve capacity, but its 9.38-inch length and Size 35 designation make fit less evident.

OPTIMA’s SpiralCell technology, using 99.99% pure lead, is the feature that distinguishes this REDTOP and is associated in the listing with starting power and performance in bad weather. Its 720 CCA rating and 31.7-pound weight provide concrete comparison points for BMW 328i shoppers, though the compact listed dimensions make size verification especially important.

At 9.38 by 6.75 by 7.69 inches, this 12-volt REDTOP has a compact stated footprint that shoppers can compare with the available battery tray and current battery. It provides 720 CCA and a 90-minute reserve capacity, giving two useful figures for evaluating starting output and reserve. OPTIMA says SpiralCell technology delivers more power than conventional flat-plate batteries and supports starting in bad weather. The 31.7-pound weight is also a practical handling detail for installation.

Skip it if you need a Group 49 AGM; the ACDelco Gold 49AGM is explicitly listed in that size class.

This REDTOP is for a buyer prioritizing its stated cranking performance, SpiralCell construction, and manageable listed weight. Its dimensions and 44Ah capacity are important boundaries; compare them with the BMW’s existing battery before considering it as a replacement.

Listed on Amazon as: OPTIMA® Batteries High Performance 35 REDTOP® Sealed AGM Battery

#10

10. OPTIMA D51 YELLOWTOP

• Voltage: 12 V
• Compatible with Vehicle Type: Passenger Car
• Dimensions D x W x H: 5.06"D x 9.31"W x 8.94"H

Best for: Dual-purpose accessory power.

Why it ranks #10: Its D51 format is the least substantiated match here, with listed dimensions of 9.31 by 5.06 by 8.94 inches and no BMW fit claim.

Premium starting and deep-cycle power is the defining combination of OPTIMA’s D51 YELLOWTOP, giving accessory-loaded vehicle owners both functions in one listed AGM battery. Its vibration-resistance claim adds another relevant point for demanding use, while the 9.31-by-5.06-by-8.94-inch dimensions let BMW 328i shoppers compare its footprint with the installed battery.

OPTIMA describes this YELLOWTOP as a true dual-purpose automotive battery, pairing premium cranking power with cycling capability and rechargeability. That combination suits a buyer who wants starting power alongside repeated accessory use, such as a high-demand audio system. The listing also states 15 times more vibration resistance, a feature relevant to vehicles exposed to vibration. Its dimensions—9.31 by 5.06 by 8.94 inches—are notably specific and should be compared with the existing battery and available space before installation.

Skip it if you need stated CCA and amp-hour figures; the OPTIMA 35 REDTOP 9020-164 lists 720 CCA and 44Ah.

This YELLOWTOP is for a buyer who needs both starting and deep-cycle capability for accessory use, and values the listed vibration resistance. Its dimensions and unspecified CCA and amp-hour figures are key boundaries when comparing it for a BMW 328i.

Listed on Amazon as: OPTIMA® Batteries High Performance D51 YELLOWTOP® Sealed AGM Battery