I bought 2016 prius hybrid few days ago. But I dont know hybrid battery type whether Li-ion or Nimh. How can I check it??
Not sure about NZ models - all Australian were NiMH. This is from USA source - but not sure if it's universal:
Welcome and congratulations!! That depends on the trim level. In the US, in 2016, trim 2 is NiMH, trim 2 ECO and higher are lithium. NZ may be very different. There should be PDF brochures available online.
From an Australian article on 2016 Prius, I'm betting New Zealand got the same versions: 2016 Toyota Prius pricing and specifications - Drive The fourth-generation Toyota Prius retains the same 1.8-litre petrol engine, albeit with substantial re-engineering, as well as still sticking with a Nickel-Metal Hydride (Ni-MH) battery instead of the lithium-ion system found in the current Toyota Prius V. Ok, this is FINAL, you have a Ni-MH battery, there was no Li battery put in a Prius in New Zealand in 2016, also none in Australia it seems. 2016 Toyota Prius Brochure https://www.toyota.co.nz/globalassets/documents/brochures/2016/prius-brochure-04-16.pdf
Check for ZVW50 (NiMH) or ZVW51 (lithium) inside the drivers door where your VIN, Paint code, manufacture date is located. .