On the 2018 I did a side by side with someone who had SV with Tech. Different speeds but identical routes and it was only a .6 mile difference in just over 100 miles. Tire wear plays a greater part (although still not significant) and I had over 10,000 miles on mine and he only had "maybe" 2,000?GerryAZ wrote: ↑Wed Jul 08, 2020 9:21 pmDoug,
Your differences in efficiency between S+ and SV+ are probably mainly due to odometer error. If your SV is like my SL, it travels further than the odometer indicates (probably about 2% with OEM Michelin tires) while the S probably travels less distance than the odometer indicates. Try comparing indicated distances between the two cars for the same route.
Missed point. Worn out tires inflate distance traveled due to a diminishing diameter so a gap was expected but based on what I read, I was expecting nearly a 2 mile difference.
Temperature has nothing to do with your increase. Charge rate defined by the car is volts times amps. The station provides a starting current and your likely start at 100% of the station's capacity. At 43 KW, you prob were are around 340-345 volts and 120 amps. As SOC hits 70% your amperage is the same but voltage is now approaching 385=390 or 46 KW. Same current but higher power which is why stations should be judged on current.DougWantsALeaf wrote: ↑Thu Jul 09, 2020 12:08 pmSo long story short, it is almost non-material.
One interesting observation yesterday while getting my free juice, was that the rate of charge from 28%-50% was about 43kW on the EVGO 50kW charger. Then is popped to 46-47kW up past 70% when I turned it off. The battery started at mid point (I didn't have my dongle with me), but did move to 1 overmidpoint later in the charge cycle (its been 90+F here in Chicago, so battery started warm). I didn't expect charge rate to go up, but maybe best temp for charging is between 90-110F?
hmm, wheel well guards? Not sure I have heard of this? Can you post pix (or link)DougWantsALeaf wrote: ↑Fri Jul 10, 2020 4:46 amOne interesting thing.
The dealer, as a dumb surprise cost (which we had them remove the cost) put door and wheel well guards on the S+ we bought last month. I imagine the door guards reduce aerodynamics. But..any chance the wheel well guards vortex the air flow around the wheel wells themselves, modestly helping efficiency at higher speeds?