Li-ion
Lexus NX 450h+ Plug-in Hybrid Battery (2022+)
The Lexus NX 450h+ Plug-in Hybrid Battery (2022+) is the high voltage battery in the Lexus NX 450h+ (2022-2025+).
At a Glance
- Li-ion chemistry
- 355.2 volts nominal
Specifications
| Chemistry | Li-ion |
|---|---|
| Nominal voltage | 355.2 V |
| Location | Undercarriage (pack case rigidly mounted to the undercarriage, per DM) |
Cars That Use It
- Lexus NX 450h+ 2022-2025+ PHEV AWD; EPA 37 mi electric range Run the checklist
What Goes Wrong
Reported failures, each from a source listed below, as of October 7, 2026.
Symptoms
- The Lexus dismantling manual says a ground-fault monitor watches for high-voltage leakage to the metal chassis while the vehicle is running; if it detects a fault, the master warning light comes on with a hybrid system warning message on the display. (techinfo.toyota.com: L-DM-016-D.pdf, 2026-10-07)
- The 2022 NX 450h+ Warranty and Services Guide schedules a periodic inspection of the HV battery cooling intake filter as a maintenance item. (assets.sia.toyota.com: L-MMS-22NX450h.pdf, 2026-10-07)
Same Electrical Spec
These packs share this one's chemistry, voltage and module count. That is a spec match only. It does not mean the parts fit each other, so check with a technician.
Recalls
- 23V478000 2022 The current rectifying module inside the DC-DC converter may have been damaged in production and can short circuit.
Check the exact car by VIN at nhtsa.gov/recalls.
Warranty
Lexus's 2022 NX 450h+ Warranty and Services Guide lists a Lexus Hybrid Battery Warranty of 10 years or 150,000 miles from the in-service date, whichever occurs first, with other hybrid system components at 8 years or 100,000 miles; later years were not opened. (assets.sia.toyota.com: L-MMS-22NX450h.pdf, 2026-10-07)
Get This Pack Tested
Do not open it yourself. The pack can hurt you with the car switched off.
Last updated October 7, 2026. Failure and recall notes are as of that date. Spotted a mistake, or speaking for a maker? Report an error.
Hybrid Battery Test is independent. It is not affiliated with, sponsored by or endorsed by Lexus. Names and part numbers are used only to identify the vehicle and the part.