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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.

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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.

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That is the battery, with free shipping nationwide. Want us to fit it in the Phoenix metro? Send this and we’ll call you with the price to install it. Pricing can change, and we confirm it before anything is ordered.

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Generations and what they mean for you

ModelRough yearsNotes
RX 400h2006–2008Nickel-metal hydride, 288V, thirty 9.6V modules. Complete packs are hard to source new, so refurbished is usually the route.
RX 450h2010–2022The same 288V, thirty-module design. Module repair is available when the failure is concentrated.
Newer RX hybrids2023 onStill 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 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?
Both are 288V nickel packs, but the modules differ: the Highlander uses forty 7.2V modules and the RX thirty 9.6V ones. They are not interchangeable, and we confirm the part against your VIN.

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Not sure what your hybrid needs? We'll work it out with you.

We come to you, test the pack, the 12V and the cooling, and you get a written quote before anything is decided. No obligation.

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