What type of battery does Lexus use?

In short, Lexus uses multiple battery technologies across its lineup: nickel-metal hydride (NiMH) traction batteries for most traditional hybrids, and lithium-ion (Li-ion) traction batteries for newer plug-in hybrids and all-electric models. The 12-volt auxiliary battery is typically a lead-acid or AGM unit.

The brand’s strategy mirrors the broader Toyota-Lexus approach and reflects trade-offs between durability, cost, and electric range. NiMH packs have proven durability and lower upfront cost, while Li-ion packs deliver higher energy density for plug-ins and EVs. In practice, recent plug-in hybrids such as NX 450h+ and the all-electric RZ 450e rely on Li-ion technology, while earlier and ongoing non-plug-in hybrids continue with NiMH in many markets.

High-voltage traction batteries: NiMH vs Li-ion

As with other hybrid automakers, Lexus uses two main types of high-voltage battery packs to power the electric motor and provide hybrid assistance.

• Nickel-metal hydride (NiMH) traction batteries power most traditional Lexus hybrids, offering reliability and cost-effectiveness with modest electric range.


• Lithium-ion (Li-ion) traction batteries are used in Lexus plug-in hybrids and all-electric models, delivering higher energy density for longer electric driving. Notable examples include the NX 450h+ (PHEV) and the all-electric RZ 450e.

In brief, the choice between NiMH and Li-ion is largely driven by model type and market, with NiMH remaining common in non-plug-in hybrids and Li-ion adopted for plug-in hybrids and EVs to enable more all-electric driving.

Current lineup examples

To illustrate how Lexus deploys these technologies in practice, here are representative use cases in recent product lines.

• NiMH: traditional hybrids in the lineup continue to use NiMH traction packs for electric assistance without requiring external charging.


• Li-ion: plug-in hybrids and EVs such as the NX 450h+ and RZ 450e rely on Li-ion high-voltage batteries for higher energy capacity and all-electric driving.

For buyers, the practical takeaway is that a PHEV or EV will typically require charging access to maximize electric range, while non-plug-in hybrids emphasize efficiency with an NiMH pack and do not depend on plug-in charging.

12-volt auxiliary battery

Beyond the high-voltage traction packs, Lexus vehicles rely on a 12-volt auxiliary battery to power starting and electronics. This battery is typically a conventional lead-acid unit, with many models using an AGM (absorbed glass mat) design for improved durability and reliability.

What this means for owners

Battery type informs charging strategy, maintenance, and replacement costs. Li-ion packs in PHEVs and EVs require proper charging infrastructure and can have different warranty terms compared with NiMH packs used in traditional hybrids. The 12-volt battery also influences routine maintenance activities and replacement timelines.

Summary

In Lexus’s current lineup, high-voltage battery technology sits in two camps: NiMH for traditional hybrids and Li-ion for plug-in hybrids and all-electric models. The 12-volt auxiliary battery is generally lead-acid or AGM. Notable Li-ion-enabled models include the NX 450h+ and the RZ 450e, while NiMH remains the backbone of many non-plug-in hybrids. This multi-battery approach shapes charging, costs, and ownership for Lexus customers.

How much does it cost to replace a battery in a Lexus?

A standard Lexus battery replacement costs between $45 and $300, while a hybrid battery replacement is significantly more expensive, ranging from $2,000 to $8,000. The final cost depends on the type of battery, its power and size, where you get it replaced (dealership vs. parts store), and if it's a standard or hybrid vehicle.
 
Standard 12V battery

• Cost: Approximately $45 to $300, depending on brand, size, and quality. 
• Where to get it: Dealerships, auto parts stores (like Pep Boys or AutoZone), or independent service centers. 
• Factors: Higher-end or OEM batteries for larger SUVs can cost more. 

Hybrid battery

• Cost: Approximately $2,000 to $8,000, depending on the model and year. 
• Factors: Hybrid batteries are much larger and more technologically advanced than standard car batteries. Some sources suggest a new lithium-ion battery pack for a Lexus ES300h can cost around $1,400, which is much lower than the dealer cost. 

Where to find replacement services

• Lexus Dealership: Expect the highest quality parts and trained technicians, which can lead to a higher price, but often include a manufacturer's warranty on parts. 
• Auto Parts Stores: Stores like Pep Boys, AutoZone, and others offer batteries that can be a more budget-friendly option. 
• Independent Service Centers: These centers may offer lower prices as they can use aftermarket parts, but their training and knowledge may be more generalist than a dealership's. 

Why are Lexus batteries so expensive?

Hybrid Battery Replacement Cost
While your typical auto battery costs around $100 to $200, a hybrid battery costs significantly more. In fact, hybrid battery replacement costs can vary anywhere from $2,000 to $8,000. That's because hybrid batteries are much larger and more high-tech than your average car battery.

What type of battery for Lexus RX350?

A Lexus RX350 typically uses a 12V lead-acid battery, most commonly in BCI Group Size 24F. However, some model years may also use other sizes, such as the 35, so it's best to confirm the correct fit for your specific year by using an online battery finder or checking the existing battery. The choice between different battery types, like traditional flooded or absorbed glass mat (AGM), depends on factors like climate and accessory power needs, with AGM generally offering premium performance, according to AutoZone.com and Interstate Batteries.
 
Key information

• Common group size: 24F
• Other possible group sizes: 35
• Battery type: 12V lead-acid
• Best practice: Use an online battery finder or check your current battery for the exact specifications for your vehicle's year and trim. 

Choosing a battery

• Confirm the group size: Use an online tool or check your existing battery to ensure you buy the correct physical size (like 24F or 35) for your RX350. 
• Consider battery type:
  • Flooded vs. AGM: Flooded batteries are standard, while Absorbed Glass Mat (AGM) batteries can offer better performance and are maintenance-free. 
  • Climate: AGM batteries are often recommended for those in more extreme climates. 
• Check other specifications: Look at the Cold Cranking Amperage (CCA), Cranking Amperage, and Reserve Capacity to match your vehicle's needs. 
• Check with your dealer: As Bell Lexus North Scottsdale notes, using a genuine Lexus battery is a great way to ensure the vehicle receives power according to manufacturer specifications. 

How to know if a car battery is AGM or lithium?

You can identify your car battery's type by checking the label for "AGM" or "Lithium-ion". If the label is missing, look for physical differences: AGM batteries are sealed, heavier, and have the acid absorbed in a glass mat, while lithium batteries are significantly lighter and may have specific markings like "Li". 
Checking the label

• Look for "AGM" or "Lithium-ion": The battery's label should clearly state the battery type. AGM batteries will have "AGM" or "Absorbent Glass Mat" printed on them, while lithium batteries will have "Lithium" or a "Li" symbol. 
• Consult the owner's manual: Your car's owner's manual will specify the original equipment manufacturer (OEM) battery type for your vehicle. 

This video explains how to identify your car battery type using the label and physical appearance: 57sLearnToDIY360YouTube · Dec 16, 2024
Physical inspection

• Check for removable caps: A flooded lead-acid battery will have removable caps to add water, while an AGM battery is sealed and maintenance-free with a flat top and no caps. Lithium batteries are also sealed and maintenance-free. 
• Consider the weight: Lithium-ion batteries are much lighter than lead-acid or AGM batteries. If your battery feels significantly lighter than you expect, it is likely a lithium battery. 
• Look for a "sloshing" sound: If you gently tilt the battery and hear a liquid sloshing, it's a flooded lead-acid battery, not an AGM or lithium battery.