The Scion FR-S, a gasoline-powered sports coupe, uses a conventional 12-volt automotive battery for starting and on-board electronics. There is no separate high-voltage traction pack in this model. Replacement batteries are standard 12V lead-acid units, with many owners opting for AGM types for reliability. Exact size and rating vary by year and market, so always check the label or the owner’s manual for the precise specification.
Battery basics for the FR-S
Understanding the FR-S battery setup helps buyers and owners choose a replacement that fits and performs well under typical driving conditions.
Stock battery type and capacity
What you’ll typically encounter when replacing or upgrading the FR-S’s 12V system:
- Type: 12-volt automotive lead-acid battery (flooded or AGM); not a lithium-ion or high-voltage hybrid pack.
- Stock capacity: generally in the 40–60 amp-hour range, though exact ratings depend on year and market.
- Replacement considerations: AGM batteries are a common upgrade for improved durability, quicker starts in cold weather, and better vibration resistance in performance cars.
Conclusion: The FR-S uses a standard 12V lead-acid battery, with replacement options typically spanning flooded or AGM types within a practical 40–60 Ah window. Always verify the exact specification from the battery label or the owner's manual.
Installation and maintenance tips
Practical advice for replacing, installing, and caring for the FR-S’s 12V battery:
- Safety first: disconnect the negative terminal before other connections, then reconnect in the reverse order.
- Replacement process: gain access to the battery, unfasten the mounting bracket, and swap in the new unit with correct terminals aligned.
- Maintenance: check electrolyte level if using a flooded battery, keep terminals clean and tight, and consider a battery tender in cold climates or if the car sits unused for extended periods.
- Compatibility: ensure the replacement meets OEM requirements for cold-cranking amps (CCA) and capacity; many aftermarket options fit standard dimensions.
Conclusion: Using the correct 12V battery type and proper installation practices helps ensure reliable starting and electrical performance for the FR-S.
Summary
The Scion FR-S relies on a conventional 12-volt lead-acid battery for its starting system and electronics, with no high-voltage pack. Replacement options include flooded or AGM 12V batteries, typically in a 40–60 Ah range, depending on year and market. Always confirm exact specifications from the owner’s manual or the battery label, and follow safe installation practices.
What is the difference between 24F and 27F?
The 27F also has the advantage of reserve capacity (RC) that can normally exceed 150 minutes compared to the 120-140 minutes of the 24F. This higher endurance will allow the 27F to suit more vehicles with multiple electrical systems or vehicles that need increased endurance in the event of alternator failure.
What battery does a 2013 Scion FR-S take?
Optima – Red Battery : Group Size 35, 720 CCA, 910 CA, 90 Minute Reserve Capacity (Part No. 35)
Is group 47 the same as H5?
47 and H5 are interchangeable. The codes that start with H are just the German/European designation under DIN and the numbers you most often see used in North America like 51R, 24R, 65, etc.
What kind of battery does the FRS take?
Most Scion FR-S models use a Group Size 35 battery.