Lexus RX 400h 2006–2008 hybrid battery
A complete replacement battery for the Lexus RX 400h 2006–2008 (2006 – 2008). The price includes professional installation in our Schaumburg shop, pre- and post-install diagnostics, cooling fan service, and a written warranty.
Choose your warranty
- check_circleInstalled price — parts, labor and diagnostics included
- check_circle$500 refundable core deposit — released when we receive your old pack
- check_circleSame-day installation in most cases
Prefer to talk it through first? Call (708) 717-7089 — we'll confirm fitment by VIN.
Delivery & installationadd
Most packs are in stock at our Schaumburg shop. Call before you come in and we'll have the battery staged — installation typically takes 2–3 hours, and most customers drive home the same day.
Can't come to us? We can ship the battery to a repair shop near you — freight-shipped on a pallet, fully charged and ready to install. Shipping cost is quoted by ZIP code.
Warrantyadd
Remanufactured packs carry a 2-year or 4-year warranty with unlimited miles, depending on the option you choose. New OEM packs carry 6 years or 100,000 miles, whichever comes first.
The warranty covers the battery pack and is honored directly by our shop — if anything goes wrong, you call us, not a manufacturer's hotline. Terms are printed on your invoice before any work begins.
Core return & $500 depositadd
Your old battery gets remanufactured or recycled — that's part of what keeps these prices down. When you buy, we place a $500 refundable core deposit as a hold on your card.
If we install the battery in our shop, we keep your old pack on the spot and the hold is released immediately — you'll never actually pay it. If the battery ships to you, send us your old pack within 30 days (we provide the return shipping label and packaging instructions) and the hold is released to your card as soon as it arrives.
Returnsadd
Uninstalled batteries can be returned within 30 days in original condition for a full refund minus return freight. Once a battery is installed, the warranty applies instead — if it fails, we repair or replace it under the warranty terms.
If our diagnostics show your battery wasn't the problem after all, you don't buy a battery — that's the point of testing before replacing.
Description
What you're getting
The first hybrid RX runs a 288V NiMH pack under the rear seats. These are old enough now that the original battery is almost always the limiting factor on an otherwise sound vehicle — the drivetrain on these routinely goes well past 200,000 miles.
New OEM packs are no longer available for the 400h. Our remanufactured packs are rebuilt with load-tested modules, balanced as a set, and covered by a 2- or 4-year unlimited-mileage warranty.
Our remanufactured packs are rebuilt with high-quality OEM cells: every module is load-tested, weak ones are replaced, and the pack is balanced as a set. The 2-year-warranty option is built for a typical service life of 2–3 years — right for an older car or shorter ownership plans. The 4-year-warranty option uses Grade A+ OEM cells and typically delivers 4–6 years of service.
A new OEM pack is no longer a practical option for this model — the factory packs are out of production and the few that surface are priced well past what the vehicle is worth. A properly remanufactured pack is the honest route here, and the one we stand behind.
Whichever you choose, the price includes installation, pre- and post-install diagnostics, and battery cooling fan cleaning — the most commonly skipped step that shortens pack life.
Technical specifications
| Fits | Lexus RX 400h, 2006–2008 |
| Chemistry | NiMH |
| Nominal voltage | 288 V |
| Location | Under the rear seats |
| Condition | Remanufactured |
| Expected life | 4–6 yrs (reman 4-yr) · 2–3 yrs (reman 2-yr) |
| Install time | 2–3 hours in our shop |
| Core exchange | $500 refundable deposit |
Installation
Two ways to get it installed
In our shop — included in the price
The simplest path: we install it in Schaumburg, test the whole hybrid system before and after, keep your old pack (so the core deposit is released on the spot), and hand you the warranty paperwork. Most installs are done the same day.
callBook an install slotAt any auto shop near you
Not in the Chicago area? Any competent repair shop can install this battery — it ships to them charged, balanced and ready to bolt in, with printed installation notes. Your warranty with us stays fully valid; just send back the old pack with the prepaid label to release your deposit.
Arrange shipping to your shop arrow_forwardComfortable with a wrench? Most hybrid packs are more DIY-friendly than people expect — but replacement involves high-voltage safety steps that must be done in the right order. Call us and we'll talk you through what's involved before you pick up a wrench.
Good to know
Why the Highlander is worth the bigger job
A three-row hybrid SUV that still returns near-30 MPG is a hard thing to replace for the price of a battery. The labor is real — second-row seats and trim come out — but the drivetrain on these is famously durable, and a warrantied pack typically buys years more service out of a vehicle that would otherwise cost five figures to replace.
Hybrid warning light on?
Call now — describe what you're seeing and we'll tell you if it's safe to drive. The consult is free.
Visit or reach out
Find us in Schaumburg
Request an appointment — or just ask
Fastest way in: call (708) 717-7089. Or leave your details and we'll get back to you within one business hour.
During shop hours we typically respond within one hour. Need help right now? Call (708) 717-7089.