BYD Han... How do they get 314 miles out of 65 kWh battery?

[OldManCan]

I was checking out this news article this morning and the range "claim" caught my eye...

https://insideevs.com/news/557433/150000-byd-han-production/?fbclid=IwAR0zIIm0P4gUwHlGhOqgMV4gKfN7udQ76XbESmj5yAgDzM34aNKgPkI-dPI

65 kWh battery for 506 km (314 miles) NEDC with FWD powertrain
77 kWh battery for 605 km (376 miles) NEDC with FWD powertrain and 550 km (342 miles miles) NEDC with AWD powertrain

Not sure how this range is tested / certified vs our EPA certified numbers but if they truly get 314 miles out of a 65 kWh pack that is very interesting. Compared to my SL+ that is almost a 50% increase in range from a very similar battery capacity.

Looking forward to seeing more data on this.

 

[salyavin]

While I am one to do some fairly serious hypermiling I also find that unlikely. The most likely way I see to realistically do it is drive quite slow.

 

[SageBrush]

Not sure how this range is tested / certified vs our EPA certified numbers

Your quote says NEDC
EPA is about 70%

 

[OldManCan]

Thank you for pointing that out. I was not clear on the NEDC vs EPA nuances (EV noob here!) and will read up on it more.

 

[SageBrush]

So far as I know, NEDC is not used by any country anymore for retail information, including China. WLTP is the test de jour outside of N. America.

I don't know why BYD advertised with a deprecated test standard (other than the obvious.) Perhaps it is still used for regulatory requirements.

 

[cwerdna]

As has been mentioned, NEDC is inflated vs. EPA range ratings.

https://insideevs.com/news/335878/2018-nissan-leaf-gets-range-rating-on-wltp-cycle/ for 40 kWh '18 Leaf:
"The range of the new Nissan LEAF is 151 miles (243 km) EPA and 235 miles (378 km) NEDC."

 

[Stanton]

As has been mentioned, NEDC is inflated vs. EPA range ratings.

https://insideevs.com/news/335878/2018-nissan-leaf-gets-range-rating-on-wltp-cycle/ for 40 kWh '18 Leaf:
"The range of the new Nissan LEAF is 151 miles (243 km) EPA and 235 miles (378 km) NEDC."

That's nuts! You'd have to be driving ~25 miles/hr to get that kind of range.

 

[knightmb]

As has been mentioned, NEDC is inflated vs. EPA range ratings.

https://insideevs.com/news/335878/2018-nissan-leaf-gets-range-rating-on-wltp-cycle/ for 40 kWh '18 Leaf:
"The range of the new Nissan LEAF is 151 miles (243 km) EPA and 235 miles (378 km) NEDC."

That's nuts! You'd have to be driving ~25 miles/hr to get that kind of range.

Yeah, a new Leaf plus with 56 kWh of capacity for range would need to average (314 / 56=) 5.6 miles/kWh, which is about the same as driving about 45 mph on perfectly flat and paved, no wind, max inflation tires the entire way. Not impossible, but not practical either given that hills and gravity and wind exist here. :lol:
You could probably do that inside a large, empty air-craft hanger with the doors closed.

 

[SageBrush]

Yeah, a new Leaf plus with 56 kWh of power energy for range would need to average (314 / 56=) 5.6 miles/kWh, which is about the same as driving about 45 mph on perfectly flat and paved, no wind, max inflation tires the entire way. Not impossible, but not practical either given that hills and gravity and wind exist here. :lol:
You could probably do that inside a large, empty air-craft hanger with the doors closed.

The EPA test cycle LA-4 was similar -- a low speed urban cycle. That was actually how Nissan got in hot water when it advertised a 100 mile range with the 24 kWh LEAF when it first started out