Lexus · 2006–present (RX 400h / RX 450h, US)

Lexus RX Hybrid battery service

Lexus RX 400h and RX 450h hybrid battery repair and replacement across the Phoenix metro. Both use a 288V nickel-metal hydride pack of thirty 9.6V modules, and the module is shared between them.

Call 833-995-7966 Schedule a repair

Lexus RX hybrid battery at a glance

Battery type: Nickel-metal hydride

Get a price for your Lexus RX Hybrid

Pick what you need and how to reach you. You get a written quote before anything is ordered.

Your vehicle *

Which option are you after? *

Refurbished battery1 year warranty1 year$2,000New aftermarket battery4 years warranty4 years$4,000

Estimate — we confirm the exact pack or module from your VIN before anything is ordered.

Where should we fit it? *

At our shopYou drive in$250 fittingWe come to youHome or work, Phoenix metro$250 fitting + $250 mobile fee

By submitting you agree we may contact you by phone, text or email to arrange your appointment. Message and data rates may apply. We do not sell your information — see our privacy policy. Prefer to talk now? Call 833-995-7966.

Generations and what they mean for you

Model	Rough years	Notes
RX 400h	2006–2008	Nickel-metal hydride, 288V, thirty 9.6V modules. Complete packs are hard to source new, so refurbished is usually the route.
RX 450h	2010–2022	The same 288V, thirty-module design. Module repair is available when the failure is concentrated.
Newer RX hybrids	2023 on	Still inside Lexus hybrid component coverage for most owners. Call a dealer with your VIN before paying anyone.

Battery chemistry and part numbers changed within some model years. We confirm against your VIN before quoting or ordering parts.

Symptoms RX Hybrid owners report

Reduced power on climbs and when loaded.
The engine running at stops where it used to shut off.
Fuel economy dropping over a few months.
A hybrid system warning light, sometimes only after the vehicle has been parked in the sun.
Fan noise from the rear seat area.

Repair or replace

A few weak modules with the rest grouped tightly: module-level repair.
A widening spread across the thirty: replacement.
We measure every module and show you the numbers before recommending either.
The 12V battery is tested first, and the vehicle is road tested under load rather than at idle.

Prices and fitment for the Lexus RX Hybrid

Lexus RX 450h Hybrid Battery (2010–2022) — from $2,000
Lexus RX 400h Hybrid Battery (2006–2008) — from $2,000

Lexus RX hybrid battery questions

Can you still get an RX 400h hybrid battery?

New complete packs for the 400h are hard to source, so refurbished is usually the route — and the module it uses is shared with the RX 450h, which keeps module repair available. Send your VIN and we will confirm what we can supply.

Why does my RX 450h lose power on hills?

Climbing is the highest-demand condition for the hybrid system, so a weak pack shows there first. Engine-side faults can do the same thing, which is why both get tested.

Is an RX Hybrid battery the same as a Highlander Hybrid battery?

They use the same module — both are 288V nickel packs of thirty 9.6V modules — but the pack assembly that bolts into the car is different, so a whole pack from one does not fit the other. We confirm the part against your VIN.