Li-ion
Lexus LS 500h Multistage Hybrid Battery (2018+)
The Lexus LS 500h Multistage Hybrid Battery (2018+) is the high voltage battery in the Lexus LS 500h (2018-2025).
At a Glance
- Li-ion chemistry
- 310.8 volts nominal
- air cooled
Specifications
| Chemistry | Li-ion |
|---|---|
| Nominal voltage | 310.8 V |
| Cooling | air (EV battery / hybrid battery intake ducts, per DM) |
| Location | Trunk area behind the rear seat |
Cars That Use It
- Lexus LS 500h 2018-2025 RWD and AWD 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-012-D.pdf, 2026-10-07)
- The 2020 LS 500h Warranty and Services Guide lists 'Clean HV battery filter' as a scheduled maintenance item. (assets.sia.toyota.com: L-MMS-20LS500H.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.
Warranty
Lexus's 2018 and 2019 LS 500h Warranty and Services Guides list the hybrid battery under the Hybrid System Warranty for 96 months or 100,000 miles, while the 2020 LS 500h guide lists a separate Lexus Hybrid Battery Warranty of 10 years or 150,000 miles from the in-service date, whichever occurs first. (assets.sia.toyota.com: L-MMS-20LS500H.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.