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V3 not needed
- Thread starter Chancellor32
- Start date
Try charging in triple digit heat in the desert - you'll see the charge rates cut in half or more because of connector temperatures.
I can't wait to have liquid cooled charge cables for hot summer locations...
I can't wait to have liquid cooled charge cables for hot summer locations...
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Yes, a Model 3 LR RWD can theoretically do 641 mi/hr at 150kW. It’s a straight calculation from the power indication. For a 3 LR RWD, the multiplier is 4.272 mi/hr / kW.
But getting 150kW requires just the right thermal conditions. 144-147kW is more typical. Here’s an example of someone getting 623 mi/hr at 146kW.
Lol it’s more like it’s not really needed cause the car charges so fast already but don’t get me wrong I’m totally down for a 40% improvement.
dhrivnak
Active Member
We have seen 624 mph. And your right any faster and I will not have time to wolf down lunch.
Well, I've had several disappointingly slow sessions in triple digits recently that I was pretty sure were because of the temps. How long did it hold the 144?
It was above 100Kw for a good amount of time. Compared to my S last summer the 3 can run laps in terms of charging speeds. At like 90% battery I think I was still getting like 60kw.
We just completed a 3300 mile round trip from Austin to Philadelphia with 15 supercharging stops and five nights of hotels with destination charging. I routinely got 144 kW charging until about 50%, and the car was always ready before we were finished eating. Supercharging is dramatically faster now than when I had a S 60 that peaked at 90kW for a brief time.
That sounds like what I was seeing last week, but not for three desert heat stops in a row on Monday and Tuesday.
How full were the chargers? Even at quartzite being completely full I was still pulling about 96kw at its peak.
I wasn't sharing a charger stack in any of these cases.
We know that worn plug ends will produce this effect, so it's possible I had bad luck repeatedly. But since the temps were consistently higher, I assumed that was the driver.
Another thing to keep in mind that makes your thread title incorrect. Pull in and all the A's are taken and you must share. You then will only get dregs and could be getting 20kW. With V3 there is no A/B sharing and you can get up to 250kW even if you get the last stall.
A lot of people will be excited because "250kW" seems so much faster than "150kW", but the reality is that the charging time will be less than 5 minutes faster. The biggest benefit from V3 stations, especially in hot climates like AZ, will be the consistent charge power due to the cooled cables in addition to not having to share power between stalls.
Here's a graph I made that shows the charging times under ideal conditions (hot battery, cold charger). The difference between V2 and V3 for a charge from 5 to 50% is 4.6 minutes, but V2 is 50% slower (9.3 vs 13.9 min). For a charge from 20 to 80%, the difference is only 2.8 minutes and the math works out such that V2 is only 14% slower (20.3 vs 23.1 min).
So V3 is less than 5 minutes faster under ideal conditions but it can provide more consistent power from it's more robust thermal management and dedicated chargers.
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Yeah not sure, when I got 143kw it was like 105 degrees outside and the handle about burned my hand off unplugging it from car.
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