2005 Mercury Grand Marquis Battery Size
The 2005 Mercury Grand Marquis uses a BCI Group 65 battery, rated about 650-850 cold cranking amps (Flooded).
- Battery type (OEM)
- Flooded
- Cold cranking amps (CCA)
- 650-850
- Terminal position
- Standard-terminal layout
- Dimensions (L×W×H)
- 306×192×192 mm
- Location
- Under the hood (engine bay)
Panther RWD; Group 65 top-post all years. Always confirm against your owner's manual or current battery label.
Where to buy a Group 65 battery
A car battery is heavy and expensive to ship, so buying in person (Walmart, Costco, or a local auto-parts store) often beats online once you count free installation and the core-charge refund on your old battery. To compare prices and reviews online:
Search Group 65 batteries on Amazon650+ CCA, FloodedAs an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Frequently asked
What size battery does a 2005 Mercury Grand Marquis take?
The 2005 Mercury Grand Marquis uses a BCI Group 65 battery, rated around 650-850 cold cranking amps.
Does the 2005 Mercury Grand Marquis need an AGM battery?
No - it comes with a flooded battery from the factory. You can usually upgrade to AGM in the same Group 65 size, but it isn't required.
How many cold cranking amps (CCA) does it need?
Aim for roughly 650-850 CCA. Choosing at or above the OEM rating is fine; going below can cause hard starts in cold weather.
Where is the battery located?
Under the hood (engine bay). Standard-terminal layout.
Other vehicles that use Group 65
See all cars that take a Group 65 battery →Also check the wiper sizes for your 2005 Mercury Grand Marquis →