Not too badly, I can get pretty close to 4m/kWh cruising at motorway speeds - and I’m in a particularly aerodynamically inefficient vehicle.pete75 wrote: ↑14 Sep 2021, 10:09amWell it's fine for you if you rarely do long journeys. We do them quite often. How does high speed cruising affect battery range?[XAP]Bob wrote: ↑13 Sep 2021, 11:39pmNah, only need it a few days a year - why lug about (and service) a diesel for that?pete75 wrote: ↑12 Sep 2021, 10:44pm
At the moment if you're doing long journeys a plug in diesel hybrid may be a better choice than pure electric. We've an E300de on order, arriving in a couple of weeks. Interesting to see what it'll be like. Electric range is about 33 miles , enough for the daily commute it'll be used for and charge time about 5 hours from an ordinary 13amp socket. It'll be replaced in a couple of years time when we may go fully electric. By then there'll be more choice of decent electric cars and much better infrastructure.
I’d far rather AlAir batteries or similar for the rare journeys
In winter, with a headwind, uphill both ways, then it drops a bit but I don’t think I’ve seen less than 3.5 over any significant journey.
Something like the MG5, I managed to trivially get over 5m/kWh on shorter A road journeys (it was a courtesy car so didn’t have it long) - my guess is that that efficiency boost would translate to the motorway as well. The MG5 LR lists 250miles wltp, so I’d expect 220-230 ish real world.
The reason I’d go for AlAir is that they become the replacement for the ICE range extender, but you can drop a couple in and still be completely electric, no complicated secondary drive system to shoe in.
They’d not be high power batteries, but if they can provide a decent base load then the LiIon can smooth that out.
Round trip efficiency is pretty poor, still better than ICE, a bit worse then hydrogen- but much simpler to store.