The 2013 Scion FR-S uses a standard 12-volt automotive battery. Replacement batteries are commonly Group 35 (or 35R in some markets), with a cold-cranking rating roughly 450–700 amps depending on climate and whether you choose a flooded or AGM type. Always verify the exact group size and terminal layout on your current battery or in the owner's manual before purchasing a replacement.
Battery type and common sizes
Below are the battery sizes and options you’re most likely to encounter when replacing the original unit on a 2013 FR-S. This information helps you pick a compatible battery that fits and performs properly in your driving environment.
- Most 2013 FR-S vehicles use a 12-volt lead-acid battery, with Group 35 (or 35R, depending on market) being the typical OEM fit.
- Cold-cranking amperage (CCA) for replacements generally ranges from about 450 to 700 A, depending on climate and whether you choose a standard flooded battery or an AGM variant.
- Two main replacement technologies are available: flooded/wet-cell and absorbed glass mat (AGM). AGM batteries offer better vibration resistance and slower self-discharge but cost more.
When choosing a replacement, ensure the group size and terminal configuration match your current battery and that the chosen CCA meets or exceeds your climate’s starting demands.
Terminal layout and compatibility
Check that the positive and negative terminals on the replacement align with your car’s cable routing. Some FR-S models may have slight variations in terminal location or clamp designs, so confirming fitment before purchase can prevent installation delays.
How to choose and install
Follow these steps to select the right battery and install it safely, ensuring reliable starts and electrical performance.
- Inspect the existing battery label to confirm the exact group size (e.g., 35 or 35R) and the minimum CCA rating required by the vehicle. The owner’s manual also lists these specifications.
- Consider your climate: harsher winters typically justify choosing a higher CCA within the acceptable range to improve starting reliability.
- Decide between a flooded lead-acid battery and an AGM battery. AGM is more durable in vibration and temperature variations but costs more upfront.
- Verify physical fitment: ensure the new battery fits the tray and that the terminal layout matches the vehicle’s cables and clamps.
- Installation notes: connect the negative terminal first, then the positive; secure the battery with the tray clamp; and reset or reprogram electronics if required by your vehicle model.
After installation, start the car to confirm proper operation, and consider recycling the old battery at a certified facility.
Summary
The 2013 Scion FR-S commonly uses a 12-volt lead-acid battery, with Group 35 (or 35R) as the typical replacement size and a CCA range of about 450–700 depending on climate and battery type. When replacing, verify the exact group size and terminal layout on your current battery or in the owner’s manual, choose between flooded or AGM based on your needs and budget, and ensure proper installation for reliable starting and electrical performance.