ACDelco Group 49 Battery – Size 49 Power
Our ACDelco Group 49 Battery provides the dependable starting power your vehicle needs, season after season. Engineered with advanced AGM or flooded lead-acid technology depending on model configuration, this battery delivers consistent cranking amps in all weather conditions.
Designed to meet OE specifications for vehicles requiring Group 49 fitment, our battery features precision construction and rigorous quality testing. Whether you’re replacing your original equipment battery or upgrading for enhanced performance, the ACDelco Group 49 ensures your vehicle starts reliably every time.
- Group 49 (H8/L5) standardized dimensions: approximately 15 × 6.9 × 7.5 inches for universal compatibility
- Cold cranking amps (CCA) rating optimized for reliable cold-weather starting performance
- Reserve capacity engineered to power accessories when the engine is off
- Calcium-enhanced lead alloy grids minimize self-discharge and extend service life
- Advanced plate design maximizes surface area for improved electrical conductivity
Group 49 Battery Dimensions & Vehicle Compatibility
The acdelco group size 49 battery follows industry-standard BCI (Battery Council International) Group 49 specifications, measuring approximately 15 inches long, 6.9 inches wide, and 7.5 inches tall. This size is also known as H8 or L5 in some applications, and it’s specifically engineered to fit battery trays in many European and luxury vehicles including select BMW, Mercedes-Benz, Audi, Volkswagen, and Volvo models.
Before purchasing, we recommend verifying your vehicle’s battery group size in your owner’s manual or by checking the label on your current battery. The Group 49 fitment ensures proper hold-down bracket alignment and cable reach, preventing installation issues. Our battery terminals are positioned to match OE specifications, so you can expect a direct-fit replacement without modifications.
Construction & Technology
We build the acdelco group size 49 battery using either Absorbent Glass Mat (AGM) or traditional flooded lead-acid technology, depending on the specific model variant. AGM batteries feature fiberglass mats that absorb the electrolyte, making them spill-proof and vibration-resistant—ideal for vehicles with advanced start-stop systems or those subjected to demanding driving conditions.
Our flooded batteries use a liquid electrolyte solution and offer proven, cost-effective performance for standard applications. Both designs incorporate calcium-enhanced lead alloy grids that reduce water loss and self-discharge, extending the time between maintenance intervals. The plates are precision-manufactured to maximize surface area contact with the electrolyte, improving electrical efficiency and cranking power.
Installation & Maintenance Guidelines
Installing your new ACDelco Group 49 Battery requires basic hand tools and attention to safety procedures. Always disconnect the negative (ground) cable first, followed by the positive cable, to prevent electrical shorts. Remove the old battery’s hold-down bracket, lift out the old unit, and clean the battery tray and cable terminals with a wire brush to ensure good electrical contact.
Position the new battery in the tray with terminals facing the correct direction, secure the hold-down bracket, and reconnect cables in reverse order—positive first, then negative. Apply a thin coat of dielectric grease to terminals to prevent corrosion. We recommend having your charging system tested if your previous battery failed prematurely, as alternator issues can shorten replacement battery life.
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Common Questions About the ACDelco Group 49 Battery
The Group 49 battery is designed to fit vehicles specifying BCI Group 49, H8, or L5 battery sizes—common in many European and luxury vehicles including BMW, Mercedes-Benz, Audi, Volkswagen, and Volvo models. We recommend checking your owner’s manual or the label on your current battery to confirm Group 49 fitment.
The standard dimensions are approximately 15 × 6.9 × 7.5 inches, which ensures compatibility with the battery tray and hold-down brackets in designated vehicles. If you’re unsure about fitment, most auto parts stores can look up the correct battery group size using your vehicle’s year, make, and model.
AGM (Absorbent Glass Mat) batteries use fiberglass mats to absorb the electrolyte, making them spill-proof and more resistant to vibration. They’re typically required for vehicles with start-stop technology or advanced electrical systems, and they handle deep discharge cycles better than flooded batteries.
Flooded batteries use liquid electrolyte and offer reliable, cost-effective performance for standard applications without start-stop systems. They may require occasional fluid level checks and distilled water additions. Check your vehicle’s specifications—if your original battery was AGM, you should replace it with AGM to maintain proper battery management system function.
Under normal driving conditions, you can typically expect 3-5 years of service life from this battery. Actual longevity depends on several factors including climate, driving habits, and vehicle electrical demands.
Frequent short trips that don’t allow the alternator to fully recharge the battery, extreme hot or cold temperatures, and extended periods of inactivity can all shorten battery life. Regular maintenance—keeping terminals clean, ensuring tight connections, and checking fluid levels in maintainable batteries—helps maximize service life. If your previous battery failed prematurely, have your charging system tested to rule out alternator issues.
CCA ratings for the acdelco group size 49 battery vary by specific model variant, typically ranging from 700-850 CCA depending on whether you select a flooded or AGM configuration. Cold cranking amps measure the battery’s ability to start your engine at 0°F, so higher numbers provide more starting power in cold weather.
We engineer our Group 49 batteries to meet or exceed the original equipment specifications for vehicles requiring this size. Your vehicle’s owner’s manual will list the minimum CCA requirement—choosing a battery that meets or slightly exceeds this number ensures reliable starting performance in your climate.
Yes, installing a Group 49 battery is a straightforward process that most vehicle owners can complete with basic hand tools—typically just a wrench or socket set. Always disconnect the negative cable first, then the positive cable, to prevent electrical shorts.
After removing the old battery’s hold-down bracket, clean the battery tray and cable terminals before installing the new battery. Reconnect cables in reverse order (positive first, negative second) and secure the hold-down bracket firmly. If your vehicle has a battery management system, some models may require a simple reset procedure detailed in your owner’s manual. When in doubt, professional installation is available at most service centers.
ACDelco batteries typically include a limited warranty covering defects in materials and workmanship, with specific terms varying by model tier and purchase location. Warranty periods generally range from 1-3 years depending on whether you select a value, mid-tier, or premium battery configuration.
Free replacement coverage is usually provided for a portion of the warranty period, followed by prorated replacement for the remaining term. Keep your receipt as proof of purchase, and check the warranty card included with your battery for complete details. Most retailers that sell ACDelco batteries can process warranty claims if issues arise during the coverage period.
Maintenance requirements depend on whether you have an AGM or flooded battery version. AGM batteries are sealed and maintenance-free—they never require fluid additions and are designed for minimal upkeep beyond keeping terminals clean and connections tight.
Flooded batteries may be maintenance-free or maintainable depending on the specific model. Maintainable batteries have removable caps that allow you to check electrolyte levels and add distilled water as needed—typically every few months depending on climate and usage. Both types benefit from periodic terminal cleaning to prevent corrosion and ensure good electrical contact. Regardless of type, we recommend having your battery and charging system tested annually after the first two years of service.