The 2007 Lexus IS250 uses a standard 12-volt lead-acid car battery. The typical replacement size is Group Size 35, with roughly 640–720 cold-cranking amps, though exact specs can vary by market, trim, and options. Always verify the correct size by checking the battery label or the dealer with your VIN.
In more detail, this model year relies on a conventional 12-volt battery for starting and electronics. It is not a high-voltage or hybrid battery. Most owners replace it with a maintenance-free, sealed lead-acid unit in Group Size 35, but regional catalogs may list alternative sizes. Verifying the exact spec via the vehicle’s documentation or parts database helps ensure a proper fit and performance.
Battery type and common sizes for the 2007 IS250
To replace or buy the correct battery, you mainly need to match the group size and ensure sufficient cold-cranking amps for your climate.
- Group Size 35 — 12-volt lead-acid, typically around 60–65 Ah, and 640–720 CCA; maintenance-free sealed unit. This is the most common replacement size for the IS250 (model years around 2006–2008 in many markets).
- Alternative sizes sometimes appear in local catalogs depending on market or supplier. Always verify fitment and CCA with your vehicle’s VIN before purchasing.
Bottom line: Start with Group Size 35 and aim for a CCA rating that meets or exceeds the OEM specification for your climate; confirm fitment and terminal orientation to ensure proper installation.
How to confirm the exact spec for your car
Use these steps to ensure you buy the right battery for your IS250.
- Inspect the current battery for its group size, CCA, and part numbers printed on the label.
- Check the Lexus owner’s manual or Lexus Parts Lookup (or the dealer) using your VIN to confirm the recommended battery group size.
- Compare the replacement options at reputable parts stores to ensure the battery matches the confirmed size and CCA requirements.
- Ensure the replacement fits the tray, has compatible terminal layout, and that the hold-down hardware will secure it properly.
Conclusion: Verifying the exact spec with your VIN or the dealer helps prevent buying the wrong battery and avoids starting or electrical issues.
Summary
The 2007 Lexus IS250 typically takes a 12-volt lead-acid battery, with Group Size 35 being the most common replacement. While 640–720 CCA is a typical range, exact specifications can vary by market and options. Always verify the correct size and rating using the battery label, the owner’s manual, or a dealer/parts database tied to your VIN to ensure an exact match. Regular checks and appropriate replacement keep the IS250 starting reliably and its electrical systems functioning smoothly.