Comparison with Hyundai ioniq?

at 60-70mph on the flat my Ioniq can make 2-3 miles on EV power only, then takes 3-4 miles to recharge then flips back into EV again and the cycle repeats on highway / motorway depend on gradient of the roads

 

And this is normal operation? On cruise control?

IMO that is not healthy for the battery, at that speed on the flat it drains 10-15 kW of power, that is 10C drain for 40% of time and charge for the other percent of time.

OK, if by "flat" you mean just a little downgrade, then Prius operates similar and battery is not so aggressively drained.

 

50 mpg US = 62.5 mpg UK in a Prius
60 mpg UK = 48 mpg US.

 

No, it would be fine for the battery - HYUNDAI will have already built in a significant buffer, just like TOYOTA did. I wouldn't worry about it - that's the way a hybrid achieves great fuel savings.

 

also different battery tech, Ioniq = LiPo while majority of Prius are NiMh

 

prius are all li-on now, except pkg 2.

edit: in the u.s.

 

And Japan only has Li-ION - most of the rest of the world has NiMH except USA which has got it on most packages now.

 

yep, no LiPo in UK on any Prius

 

Li Po, as in liposuction?
If you meant lithium ion, my Prius certainly has it! And while many a Cornishman believes Cornwall is not part of the UK, IMHO it still is.

 

I think you'll find it's NiMh, no Li-ion batteries on UK spec Gen 4 models, only on the Prius+.

 

And, as far as I can ascertain, PRIUS uses Li-ION, not LiPo (though mine is NiMH).

 

mine are LIFO last in, first out.

 

My brain hurts me! I was sure UK Prii all had Li Ion having ditched the Ni M H.

 

You've not been wearing your tin foil hat enough in the Prius have you

 

just checked, still lists NiMh in brouchure

 

Looks like the 12v battery portion is underneath the Ioniq next to the gas tank. It's separate from HV battery but it is Lithium, saving about 26 lbs. Conversely, the EV version of the Ioniq has the traditional 12v battery.
Battery flat - Page 5 - Hyundai Ioniq Forum

 

that was very confusing. hyundai quote: 'the 12v battery, which is modularized within the larger package, can be serviced'. i'm still going with a dedicated part of the hybrid battery until there are specs available.
funny that jan treur and bluecar1 don't know, but that was a month ago.

also, i don't believe the prius battery weighs 26 pounds more than whatever hyundai is using. lion batteries are not that light. but again, we don't know what the 12v battery really is.

 

I believe the 12V battery is physically integrated with the overall HV pack but can be modularly removed and replaced and is located under the rear seat. However, I did not look closely to see exactly where it is located. The 12V portion is electrically separate and probably uses a different cell design although I'm not certain of that either.

 

potential nightmare. do you think they really knocked 26 pounds off the prius battery?

 

What's more confusing is that this is only available in North America. The rest of the world gets a traditional 12v battery in the trunk. That box underneath the Ioniq is still a mystery unless someone look inside it.