Li-ion
Toyota Prius Plug-in Hybrid (ZVW35) Li-ion Battery
The Toyota Prius Plug-in Hybrid (ZVW35) Li-ion Battery is the high voltage battery in the Toyota Prius Plug-in Hybrid (2012-2015).
At a Glance
- Li-ion chemistry
- 207.2 volts nominal
- air cooled
Specifications
| Chemistry | Li-ion |
|---|---|
| Cell format | prismatic |
| Cell maker | Primearth EV Energy |
| Nominal voltage | 207.2 V |
| Capacity | 21.5 Ah |
| Energy | 4.4 kWh |
| Cooling | air (active forced air per INL) |
| Location | Lower part of cargo area behind rear seat, under carpeted panel |
| Weight | 76 kg |
Cars That Use It
- Toyota Prius Plug-in Hybrid 2012-2015 ZVW35; 2010 fleet-test PHV used a different 346 V Li-ion pack (not sold retail) Run the checklist
What Goes Wrong
Reported failures, each from a source listed below, as of October 7, 2026.
- Owner complaints NHTSA lists under the Hybrid Propulsion System component for the Toyota Prius Plug-In, Toyota Prius Plug-In Hybrid, by model year: 2012: 6 · 2013: 8 · 2014: 5 · 2015: 3. These are all hybrid system complaints, owner reported and unverified, not only battery faults, as of 2026-10-07.
Symptoms
- A keyword search of the 6 Hybrid Propulsion System complaints NHTSA lists for the 2012 Toyota PRIUS PLUG-IN finds that 4 mention warning light, 3 mention stalling or shutting down (complaint text is owner-reported and unverified; as of 2026-10-07). (NHTSA complaints, 2012 Toyota Prius+Plug-In, 2026-10-07)
- A keyword search of the 8 Hybrid Propulsion System complaints NHTSA lists for the 2013 Toyota PRIUS PLUG-IN HYBRID finds that 2 mention warning light, 4 mention stalling or shutting down (complaint text is owner-reported and unverified; as of 2026-10-07). (NHTSA complaints, 2013 Toyota Prius+Plug-In+Hybrid, 2026-10-07)
- A keyword search of the 5 Hybrid Propulsion System complaints NHTSA lists for the 2014 Toyota PRIUS PLUG-IN HYBRID finds that 3 mention warning light (complaint text is owner-reported and unverified; as of 2026-10-07). (NHTSA complaints, 2014 Toyota Prius+Plug-In+Hybrid, 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
- 17V718000 2012-2015 An EV fuse inside the hybrid battery may crack after repeated high-load driving such as climbing long hills.
Check the exact car by VIN at nhtsa.gov/recalls.
Warranty
No Toyota warranty booklet was found for this car; Toyota's 2012 Prius Plug-in Hybrid press release stated the HV battery is covered for 8 years/100,000 miles (10 years/150,000 miles in CARB states). (pressroom.toyota.com: toyota-introduces-2012-prius-plug-in-hybrid, 2026-10-07)
Get This Pack Tested
Do not open it yourself. The pack can hurt you with the car switched off.
Sources
- toyota-tech.eu: Prius_Plugin_erg_en.pdf
- energy.gov: batteryPrius8663.pdf
- techinfo.toyota.com: T-DM-006-D.pdf
- techinfo.toyota.com: T-ERG-009-D.pdf
- pressroom.toyota.com: toyota-introduces-2012-prius-plug-in-hybrid
- NHTSA complaints, 2012 Toyota Prius+Plug-In
- NHTSA complaints, 2013 Toyota Prius+Plug-In+Hybrid
- NHTSA complaints, 2014 Toyota Prius+Plug-In+Hybrid
- NHTSA complaints, 2015 Toyota Prius+Plug-In+Hybrid
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 Primearth EV Energy, Toyota. Names and part numbers are used only to identify the vehicle and the part.