In short, the Lexus ES 350 uses a standard 12-volt automotive battery, with common replacement sizes being Group 24F or Group 35 depending on the year and trim. Always verify the exact size on the battery label or in the owner’s manual before buying.
Understanding the ES 350 battery sizes and types
The ES 350 has relied on conventional 12-volt lead-acid batteries across its generations. The two most frequently encountered group sizes are 24F and 35, each providing the necessary cold-cranking amps (CCA) to start the engine and run electrical systems. Most ES 350 units use a flooded lead-acid battery, but some late-model or market-specific configurations may require an AGM (absorbed glass mat) battery, particularly if the vehicle has Start-Stop functionality or unusually high electrical demand. Always confirm the exact specification for your vehicle by checking the under-hood label, the owner’s manual, or Lexus’ official service information with your VIN.
Common battery sizes you’re likely to encounter on the ES 350, along with typical performance ranges, are listed below. These values are general guidance; the exact fit can vary by model year and market.
- Group Size 24F: Widely used in older ES 350 generations; typical CCA around 650–750 A; reserve capacity (RC) roughly 90–110 minutes.
- Group Size 35: Often seen in later ES 350 models; similar CCA around 650–750 A; RC typically in the 90–120 minute range.
- AGM option: Available in some trims or regions, especially where Start-Stop or heightened electrical demand is present; AGM batteries handle higher current and vibration better and can be more expensive.
Bottom line: for most ES 350 replacements, you’ll be choosing between 24F and 35, with CCA in the 650–750 A range and RC around 90–120 minutes. Always verify the exact spec for your vehicle to ensure a perfect fit.
How to choose and install a replacement battery
Choosing the right battery involves matching the correct group size, CCA, and battery type to your ES 350. Installation should be done with care to avoid electrical damage and corrosion. The following steps help ensure a proper and safe replacement.
- Identify the exact group size, CCA rating, and terminal arrangement from the battery label under the hood or your vehicle’s manual, using your VIN if needed.
- Decide between a flooded lead-acid battery (most common) and an AGM battery (recommended if your car has Start-Stop or you want maximum durability in extreme climates).
- Ensure the battery dimensions fit the tray and that the polarity (positive/negative) terminals align with the cables in your ES 350.
- Choose a battery with a warranty length that fits your needs; many reputable brands offer 3–5 year coverage.
- Have the battery installed by a professional if you’re not comfortable doing it yourself, especially to avoid short circuits or improper cable routing. When replacing yourself, disconnect the negative terminal first, then the positive, and reconnect in reverse order, cleaning any corrosion from terminals.
With the correct battery and careful installation, your ES 350 should start reliably and maintain electrical performance across seasons.
Brand options and warranty considerations
Many well-known battery brands offer Group 24F and Group 35 options that meet or exceed OEM specifications. When choosing, consider cold-crank performance, reserve capacity, and warranty length. In addition to price, a longer warranty or Better-Business-rated service can be a strong indicator of reliability, especially in colder climates where starting performance matters.
Common reputable brands you’ll see for the ES 350 include Bosch, Duralast, Interstate, Exide, Optima (AGM), and OE-equivalent options from Toyota/Lexus-authorized suppliers. Always verify that the chosen battery matches your ES 350’s group size and electrical requirements.
To ensure you get the best value, you can compare specifications (CCA, RC, size), read customer reviews for reliability in your climate, and confirm the warranty terms before purchase.
Summary
The ES 350 typically requires a 12-volt automotive battery, with Group Size 24F or 35 being the most common replacements. Verify the exact size and CCA from the battery label or the owner's manual for your specific year and market. When buying, consider whether you want a standard flooded battery or an AGM variant, particularly if your vehicle has higher electrical demands. Ensure proper fit, safety during installation, and a solid warranty to protect your investment. If in doubt, consult a Lexus dealer or a qualified technician with your VIN for precise specifications.