Came across this which I’ve not validated but does seem to make sense at a glance: Comparison of WLTP and CLTC
Based on that the WLTP range would be 828-900km (515-560 miles).
Real world, 6-700km at a guess?
Comment on BYD Reveals the ‘World’s Longest-Range EV’ as American Auto Industry Struggles to Keep Pace
Ilovethebomb@sh.itjust.works 5 hours ago
1,036 km (644 miles) on a single charge under China’s CLTC testing standard.
Does anyone know how realistic this range is? You can get some absurd range from a vehicle if you’re driving on a closed course at 60kmh with no air conditioning or entertainment.
postnataldrip@lemmy.world 5 hours ago
dupelet_comments@piefed.social 1 hour ago
The WLTP is pretty accurate to the actual range I get on my BYD.
AlternatePersonMan@lemmy.world 4 hours ago
Yeah, the EV range is frustrating.
270 miles? Pretty good. Except you shouldn’t drive it below 20% or above 80%, so really the range is like 170. Cold winter? Now it’s like 75.
No regrets on our EV, but I would feel a whole more more comfortable with 2x the capacity.
Too bad we can’t buy BYD here.
Cethin@lemmy.zip 1 hour ago
Never heard the “above 80%” thing. I’m pretty sure you’re wrong about this. With lead-acid batteries, this was optimal. I’m pretty confident that lithium ion batteries it’s best to keep the charge as high as possible. Ideally you’d only ever use it fully charged. It’s health is harmed by draining it low/fully.
I don’t own an EV, but I know enough about it that I’m pretty sure this is the case. You should look it up for your vehicle though. This advice also applies to phones and other lithium ion batteries too. Lead-acid was damaged by keeping the charge high, but lithium ion is damaged when low, and almost all devices are lithium ion now.
cmnybo@discuss.tchncs.de 43 minutes ago
Lead acid batteries like to be kept fully charged all the time and don’t like to be discharged below 50% state of charge.
Lithium batteries like to be kept around half charged. They degrade quicker when kept at a high or low state of charge. Running lithium batteries from 20-80% does extend the lifespan, but charging to 100% is fine when you need to go on a longer trip. Just don’t keep it at 100% for long periods of time.
fizzle@quokk.au 37 minutes ago
I’m pretty confident
confidently incorrect.
You could disabuse yourself with a quick search.
rumba@lemmy.zip 3 hours ago
Expect CLTC to be advertising the best possible range.
There’s a ceramic battery hitting the market that has a marginally higher density and nothing is stopping them from adding more batteries. There’s also a new hub-motor concept that has a lot less losses, but they’re not car sized yet.
Getting to 644 would be as easy as throwing more batteries at it, but i’d expect those numbers to come down a bit, or the price to be much higher.
PabloSexcrowbar@piefed.social 3 hours ago
Adding more batteries increases the weight, though, which in turn makes the motors work harder, and therefore makes them use more energy to do the same thing.
zergtoshi@lemmy.world 2 hours ago
That’s not that big of a deal for long-range trips, on which you typically don’t have to accelarate often.
Keeping the car going at a certain speed depends on several types of resistance, most importantly air resistance, but not really on weight.
More weight plays a bigger role for energy consumption in urban ares, where the weight needs to be accelerated more often than on the highway, the mileage per kWh is yet typically higher than on the highway due to the lower speed and less air resistance.
What I’m trying to say: I’d pick the bigger battery any time over the smaller one, if the price is reasonable.
EVs are already heavy. The weight from some additional batteries don’t play a big role.Cethin@lemmy.zip 1 hour ago
Also, with breaking recovering energy, this negates some of the issues too. The inertia is used to recharge the batteries, so the losses are from friction and heat losses. Obviously lighter is better, but a lot of the issues of weight on efficiency can be reduced. Weight is bad for safety though, so there is that to consider.
ExcessShiv@lemmy.dbzer0.com 1 hour ago
Frequent acceleration/deceleration driving like city driving is also significantly more efficient in EVs because of regenerative braking. ICE just lose all that energy they spent acceleratingwhen the have to stop 500m later, which destroys their efficiency.
zer0squar3d@lemmy.dbzer0.com 5 hours ago
en.wikipedia.org/…/China_Light-Duty_Vehicle_Test_…
Ilovethebomb@sh.itjust.works 2 hours ago
Right, so you’re not getting anywhere near that on the open road.