Was doing the same last week. Oh what to do in this long Covid winter nights .chrisell wrote: ↑Tue Dec 29, 2020 4:50 pm
Conclusion 1: the I-pace is happier to be in hotter weather with the A/C going than it is to be in colder weather with the heating going. Seems about right as a general statement about batteries.
Conclusion 2: WLTP is an absolute joke. It's worse "guidance" than the old EPA gas-mileage numbers for ICE cars. About all it's good for is comparing EVs to each other. If one EV has a higher WLTP range, it means it has a higher real-world range. It doesn't mean you'll ever actually achieve the WLTP range.
Conclusion 1: i am getting on average 17% more consumption in NOV/DEC compared to JUL/AUG. kWh/100mi: 43.3 vs 37.3 or kWh/100km: 26.9 vs 22.9, showing a linear correlation with the temperature decline.
Conclusion 2: WLTP calculates to full usable battery, right? In my long term data, anything before 18kWh/100km or 29kWh/100mi i consider an outlier. 18kWh on 84.4kWh battery would give 470km.
Since range really applies to long distance usage, where typical charge seem to be more between 10-80% or 60kWh usable battery, that translates to practical usually distance:
• summer (22.9kWh/100km 20"): 262 km / 162 mi
• winter (26.9kWh/100km 18"): 223 km / 138 mi
First 5 miles: the first 3.1km/5mi or maybe 5 minutes increases the consumption by 25% above the average. So yes, those short distances are killing for range.
Tyre pressure: coincidently i seem to have lowered the tyre pressure to 2.5 bar/ 36 psi around the same time the day-time temperature plummeted early November. This increased the first 5 mi consumption to 47% above average. After i increased last week to a (very) high 3.1 bar / 45 psi the graph seems to come down to linear projections.
Winter tyres: changing from 20" summer to 18" winter tyres early October does not seem to have affected range. In fact it seems to improve, probably under influence of the higher pressure upon fitting. Don't recall exact numbers, but it was in the range of 2.8 bar summer vs. to 3.0 winter.