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Science-2.0 claim: Fast Charging Stations Damage Tesla Car Batteries After Just 25 Charging Cycles

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Curious if this is legit and something to be concerned about. If so, how might Tesla respond? If not, why is this test not valid?

Fast Charging Stations Damage Tesla Car Batteries After Just 25 Charging Cycles

Official source: Error - Cookies Turned Off

From page 6:
In the first 13 cycles, the battery capacities forboth charging techniques were similar. Still, as the batterywas cycled for a much longer time frame, the industrycharging technique exhibited a much larger capacity fade(40% capacity fading around 40th cycle). On the contrary,the capacity retention of the batteries under IR based fastcharging was still above 80% around 40th cycle.For most battery applications, a battery or a batterypack is considered to have reached its end of life whenthe overall capacity of a battery or a battery pack reaches80%. In the case of the NCA batteries that were tested,the initial measured capacity was 3184 mAh, whichmeans that when the battery capacity reached 2520 mAh,it cannot be used in most applications such as electricvehicles or portable electronics. In Figure 5A, the batte-ries reached 80% capacity retention after 25 cycles whileusing the industry charging technique. But for the batte-ries cycling under IR fast charging, the batteries wereable to retain 80% capacity for 11 more cycles before itreached 80% capacity.
Meanwhile, mechanical distortion occurs in all group1 batteries under industry fast charging around 60thcycle. As shown in Figure 5B, the cases of the batterieswere broken and the electrodes, the electrolyte wasexposed to air, which could be very dangerous for thebatteries in real applications due to the inflammablenature of the organic electrolyte. Since the batteries werecycled inside the environmental chamber, which wasexplosion proved, the batteries were continued to cycleafter the distortion occurred for further analysis. Forgroup 2 batteries cycling under IR based fast charging, nomechanical distortion was observed.

Thanks.
 
"In Figure 5A, the batteries reached 80% capacity retention after 25 cycles while using the industry charging technique. "

Assuming 300 miles per cycle, that means my Tesla battery (with fast-charging) will degrade to 80% capacity after 7,500 miles. That is not even close to real world experience. So my guess is, no, it's not something to be concerned about. But I didn't read the whole paper to find out their voodoo.
 
If this is the same study which made the news circles a few months ago, it's total junk. Their "test" didn't involve any sort of battery management, thermal management, reserve capacity at the top and bottom end of the battery, cycling from 0 to 100%... basically, included none of the features that commercial available EVs, especially Teslas, utilise.
 
Curious if this is legit and something to be concerned about. If so, how might Tesla respond? If not, why is this test not valid?

Fast Charging Stations Damage Tesla Car Batteries After Just 25 Charging Cycles

Official source: Error - Cookies Turned Off

From page 6:


Thanks.

Horse poop. They don't make an EV of any brand that bricks in 60 DCFC sessions. Some EVs endure over 3 C peak burst charging rates thousands of times. That would grenade many batteries.

The most intensive study I know of about actual EV battery life was done by the DOE lab in Idaho. Go hunt that up. It's on this site somewhere.