The 2015 Dodge Charger uses a standard 12-volt automotive battery. The exact size varies by engine and trim, but most 2015 Chargers use a Group Size 75 battery, with some configurations using a 78 size.
Overview of the 12-volt battery in the Charger
The Charger’s electrical system runs on a conventional 12-volt lead-acid battery, not a high-voltage pack. This battery powers starting, lighting, and accessories. Some models may use an AGM (absorbed glass mat) option from the factory or through certain trim packages, but this isn’t universal.
What size does it take?
To confirm the exact group size for your particular vehicle, refer to the owner’s manual, inspect the battery label on your car, or consult Mopar parts catalogs using your VIN. In practice, many 2015 Chargers use Group Size 75, while a few configurations may use Group Size 78 or other close equivalents.
How to determine your battery size
Use these steps to verify the correct battery size before purchasing a replacement.
- Inspect the battery top or side label for the group size (for example, 75 or 78).
- Check the owner’s manual or a factory specifications sheet for the recommended group size and CCA rating.
- Use your VIN to look up the exact OEM battery in the Mopar parts catalog or through a Dodge dealer.
- Choose a battery that meets or exceeds the OEM CCA, RC, and dimensions for your engine/trim.
Confirming the precise size ensures compatibility with fitment, electrical load, and warranty coverage.
Replacing the battery
When replacing, use a 12-volt lead-acid battery with the appropriate group size for your model (commonly 75 or 78). Ensure the battery is maintenance-free or properly maintained and that it provides sufficient CCA for your climate. Some high-traffic or feature-rich configurations may call for an AGM option as specified by the dealer or trim level.
To avoid damage, follow safe replacement practices: disconnect the negative terminal first, then the positive; keep track of any anti-theft or alarm codes; ensure clean and tight terminals after installation.
Battery care and expected life
Replacement intervals typically run about 3–5 years, depending on climate, driving patterns, and battery quality. Regular checks for terminal corrosion and proper charging help extend life.
Summary
The short answer is that a 2015 Dodge Charger uses a standard 12-volt automotive battery. The common group sizes are 75 or 78, depending on the engine and trim, so verify with the battery label, the owner's manual, or a dealer using your VIN. Choose a replacement that meets or exceeds OEM specifications, and consider an AGM option if your configuration calls for it. Regular maintenance and timely replacements will keep the Charger starting reliably and its electrical system functioning smoothly.