The gasoline 2018 Fiat 500 uses a standard 12-volt lead-acid battery for starting and electronics, while the electric Fiat 500e uses a separate high‑voltage battery pack rated around 24 kWh for propulsion.
Gasoline Fiat 500 (2018) battery size
The following notes describe the typical specifications for the gasoline version, with variations by market and trim.
- Battery type: 12-volt lead-acid auxiliary battery (the conventional car battery used for starting the engine, lights, and electronics).
- Typical capacity: approximately 40–60 Ah, depending on market and exact vehicle specification.
In practice, the gasoline Fiat 500 relies on a standard 12‑volt battery to power routine electrical loads, with capacity within the common range for compact cars of its era.
Electric Fiat 500e battery size
The following notes cover the electric version, which uses a high‑voltage traction battery separate from the 12‑V system.
- Battery type: high‑voltage lithium‑ion traction pack used to power the electric motor.
- Nominal capacity: about 24 kWh (the pack is commonly listed as 24 kWh in most markets).
- Voltage and configuration: nominally around 350–400 volts, with battery management and thermal controls integrated into the system.
- Note: The 12‑V system in the 500e is recharged via a DC‑DC converter from the high‑voltage pack, separate from the main traction battery.
In summary, the standard 2018 Fiat 500’s battery is a 12‑volt auxiliary unit for the gasoline model, while the electric 500e uses a 24 kWh lithium‑ion pack for propulsion.
Summary
For the 2018 Fiat 500, the gasoline version employs a conventional 12‑volt lead‑acid battery (roughly 40–60 Ah), and the electric 500e version uses a 24 kWh lithium‑ion high‑voltage battery for its drivetrain. The two batteries serve different roles and are not interchangeable, with the 12‑V system being charged via the vehicle’s alternator (gasoline) or a DC‑DC converter (electric). Always refer to the owner’s manual or the battery label for the exact specifications applicable to your vehicle’s market and trim.