Was wondering if the charging rate for the 75D would increase from the current peak 95-100 kW to something higher.
Upgraded V2 Supercharger - Do 75D cars benefit?
- Thread starter ab26
- Start date
Considering that the 75 battery does not even get up to the 120kW that V2 SuperChargers provide to larger batteries, it's unlikely to expect that charging speeds will improve for the 75 models.
They should however benefit from the new On-Route Battery Warmup feature!
Now, whenever you navigate to a Supercharger station, your vehicle will intelligently heat the battery to ensure you arrive at the optimal temperature to charge, reducing average charge times for owners by 25%.
Introducing V3 Supercharging
Now, whenever you navigate to a Supercharger station, your vehicle will intelligently heat the battery to ensure you arrive at the optimal temperature to charge, reducing average charge times for owners by 25%.
Introducing V3 Supercharging
75 does not go over 100kW on current chargers as the pack voltage is lower. But, the supercharger v3 and v2 updates increase the amps provided by the charger, so 75s will likely benefit exactly the same as all others.
Ulmo
Active Member
Agreed. The only way smaller Tesla Model S and X batteries can benefit from the new V2 and V3 upgrades are as follows:
- In V3, you don't have to share with another car charging.
- Your battery gets preheated to start with faster charging in some conditions.
- Everyone else will also be experiencing faster charging, and will get out of your way faster, so less lines, or in the case of V2, potentially less time you spend sharing with another car charging. This has a huge effect since there are a lot of new Model 3's and soon Model Y's congesting SuperChargers, especially since they can charge particularly fast.
- Tesla probably tuned the charging algorithm for your car to be slightly more aggressive where it can be, but I don't know.
- Tesla being able to serve more cars with lower footprint will allow Tesla to invest this money in more V3 SuperChargers, thus reducing the time you spend getting to and using SuperChargers, since they will be closer, less congestion, and more V3.
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As @_jmk mentioned, if the supercharger improvement means increase current, then 75D cars might benefit and see charging rates > 100 kW. I know for a fact that the old 70D battery packs charged all the way to 115kW, so there is no fundamental limitation to the 75D battery packs.
With 2019.12.1, the 75D packs are now getting charging peaks of 105kW per reddit:
Fastest rate of charge we've had in our MX! Firmware upgrade 2019.12.1 last night. : teslamotors
Great. Now we need someone to record the entire charging session so that we can get the new charging profile.
I have gotten 100kW many times from 75 pack when it’s properly warm (pack temp over 30c), so i would guess this translates to 110kW when warm. Good, but if the taper is changed it could more significant.
Wait, if the 100 pack goes to 1.5c (150kW), then with the same c rating 75 pack should now be 112.5kW.
Really wish peak charge rates were advertised on the spec page... For some it's as important as 0 to 60 times. If I knew my 75D was 20% slower charging I may have coughed up another 10k
Ok. So I got v2019.12.1.1 and went to the supercharger to see the charge profile of my 75D. Here are the curves comparing my charging profile before and after the upgrade. To summarize, the peak power is certainly higher, however, it tapers slightly earlier than before meaning a net wash. Going from 8% to 90% would save about perhaps a min or two (total time taken was 50 mins).
Here in Finland we have few people already reaching the 1.5C, 112kW. Overall charge time seems unaffected really unless you leave with 60%.
Since it helps older 75s, which are built with the same modules as 90s (just 2 less of them), I'd expect it'll affect all cars to a greater or lesser extent. I haven't seen 90 specific data so far, though.
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