The 2007 Buick Lucerne uses a standard 12-volt flooded lead-acid automotive battery. It is not typically an AGM battery by default, and the exact group size depends on the engine and trim (commonly around 75 or 78).
In brief, the Lucerne’s electrical system runs on a conventional 12V battery, so when replacing it you should match the correct group size and cold-cranking amps (CCA) as listed on the existing battery or in the owner's manual. The exact specification can vary by engine option and market, so verifying the label or manual is essential.
Battery basics for the 2007 Buick Lucerne
Before shopping for a replacement, know these core specifications and options to ensure compatibility with your Lucerne's electrical system.
- Battery type and chemistry: Flooded lead-acid, standard automotive battery. AGM is less common for this model year unless the owner upgraded.
- Voltage: 12 volts.
- Common group sizes for this model: 75 or 78 are typical for full-size GM sedans of this era.
- Cold-cranking amps (CCA): Typically in the 600–800 A range, depending on the engine and exact equipment.
- Reserve capacity (RC): Generally around 100–125 minutes, enough to support accessories if the engine is off.
Note: Specifications can vary by engine option and market, so always verify by checking the battery label or the owner's manual, and match or exceed the CCA and RC when replacing.
Replacing and installation considerations
When replacing the battery, ensure you disconnect the negative terminal first, wear eye protection, and replace with a battery of the same or higher performance and the same physical dimensions or fitment. Ensure proper terminal orientation and secure mounting to prevent movement.
Summary
The 2007 Buick Lucerne uses a standard 12-volt flooded lead-acid automotive battery, with typical group sizes around 75–78 and CCA in the 600–800 A range. Always confirm your exact spec via the battery label or owner's manual and replace with a battery meeting or exceeding those ratings.