ACDelco Professional AGM Group 48 Battery
Our Professional AGM Group 48 Battery brings premium Absorbed Glass Mat technology to vehicles requiring BCI Group 48 fitment. Designed for cars and light trucks with high electrical demands, this maintenance-free battery delivers reliable cold cranking power and exceptional cycling performance.
We engineered this battery with calcium-alloy grid technology and pressurized valve regulation to withstand extreme temperatures and resist vibration. Whether you’re powering advanced safety systems, infotainment displays, or frequent start-stop operation, the Professional AGM Group 48 provides consistent voltage output throughout its service life.
- 760 cold cranking amps (CCA) for strong starting performance in all climates
- 120 reserve capacity minutes for extended accessory runtime
- BCI Group 48 dimensions: 10-7/8″ L × 6-13/16″ W × 7-9/16″ H
- Maintenance-free sealed design — no water additions required
- Absorbed Glass Mat construction resists vibration and prevents acid leakage
AGM Technology & Construction
The ACDelco Professional AGM Group 48 battery reviews consistently highlight our Absorbed Glass Mat construction as a key performance advantage. Unlike conventional flooded batteries, AGM technology suspends electrolyte within highly porous glass mat separators pressed tightly against the lead plates.
This pressurized design eliminates free liquid acid, preventing spills and allowing flexible mounting positions. The tight compression reduces active material shedding and extends cycle life, making this battery ideal for vehicles with regenerative braking or frequent engine restarts.
Fitment & Compatibility
This battery matches BCI Group 48 specifications with precise dimensional tolerances of 10-7/8 inches length, 6-13/16 inches width, and 7-9/16 inches height. The top-post terminal configuration fits most domestic and import vehicles designed for Group 48 battery installations.
Common applications include select Honda, Nissan, Infiniti, and Hyundai models equipped with advanced electrical systems. Always verify your vehicle’s battery group size in the owner’s manual or by inspecting the original equipment battery label before ordering.
Installation & Mounting
The sealed, valve-regulated design permits installation in confined spaces, including trunk-mounted battery compartments and under-seat locations. Our Professional AGM Group 48 meets all safety requirements for passenger-compartment battery placement when properly secured.
Before installation, disconnect the negative cable first and clean all terminal connections with a wire brush. Apply a thin layer of dielectric grease to terminal posts to prevent corrosion. Torque terminal bolts to manufacturer specifications — typically 90-120 inch-pounds for top-post connections.
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Common Questions About the ACDelco Professional AGM Group 48
The Group 48 battery fits select Honda Accord, Honda Civic, Nissan Altima, Nissan Maxima, Infiniti Q50, Hyundai Sonata, and similar vehicles requiring BCI Group 48 dimensions (10-7/8″ L × 6-13/16″ W × 7-9/16″ H). Always verify your specific vehicle’s battery group size by checking the owner’s manual or inspecting the existing battery label.
This battery works best in vehicles with advanced electrical systems, start-stop technology, or frequent accessory use that benefits from AGM deep-cycle capabilities.
Under normal automotive use with a properly functioning charging system, this AGM battery typically delivers 4-6 years of service life. Actual longevity depends on climate conditions, driving patterns, electrical load, and maintenance practices.
Vehicles with frequent short trips, extreme temperature exposure, or high parasitic draws may experience shorter battery life. The 24-month free replacement warranty provides coverage during the critical early service period, with prorated protection available for an additional year.
Yes, the sealed valve-regulated AGM design meets safety requirements for passenger-compartment installation when properly secured. The absorbed electrolyte construction prevents acid leakage and minimizes hydrogen gas emissions during normal operation.
Ensure adequate ventilation around the battery and verify that any existing vent tube remains properly routed. Follow your vehicle manufacturer’s installation instructions for trunk-mounted or under-seat battery locations, including proper hold-down bracket securing and terminal orientation.
AGM batteries like the ACDelco Professional Group 48 suspend electrolyte in absorbent glass mat separators rather than free liquid acid. This construction delivers faster recharge rates, better deep-cycle performance, superior vibration resistance, and maintenance-free operation.
AGM batteries handle the demands of start-stop systems, regenerative braking, and frequent accessory use better than conventional flooded batteries. The sealed design prevents corrosion-causing acid vapor and allows flexible mounting positions, though AGM batteries typically cost more than standard flooded equivalents.
ACDelco Professional AGM batteries ship with a factory charge sufficient for immediate installation in most cases. However, if the battery has been in storage for several months, we recommend checking the open-circuit voltage with a digital multimeter.
A fully charged AGM battery should read 12.8-13.0 volts at rest. If voltage measures below 12.4 volts, charge the battery using a quality AGM-compatible charger before installation to ensure optimal performance and service life.
The ACDelco Professional AGM Group 48 works with standard automotive charging systems that maintain 13.8-14.4 volts during operation. Most modern vehicles detect AGM batteries automatically and adjust charging parameters accordingly.
If your vehicle requires battery registration or coding after replacement (common in European makes), have an authorized service center program the new battery into the vehicle’s electrical management system. This ensures proper charge control and maximizes battery longevity.
We provide a 24-month free replacement limited warranty covering defects in materials and workmanship under normal automotive use. After the initial two years, prorated replacement coverage extends for an additional 12 months based on time in service.
Warranty service is available at thousands of authorized ACDelco retailers nationwide. Keep your purchase receipt and note the date code on the battery case to verify coverage eligibility when requesting warranty support.