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Supercharging taking more than hour

Mjsais

Member
Aug 12, 2013
101
96
Columbus OH
And it's virtually impossible for the a P85D to show only 150 RATED miles at 100% and for it to still be working without having thrown some other fatal error.

What is your current rated mileage and SOC? Divide current rated range / (charge% / 100). For example, if it says 200 miles currently at 90%, then your rated range at 100% is 222 miles.

Starting somewhere in V9, Tesla updated the firmware and slowed charging down....a lot. I stuck with V8 for years to not suffer rangegate or chargegate. Unfortunately I wasn't watching chargegate too carefully and once they fixed the range issue I decided to upgrade my MCU to MCU2 which meant moving from 3 year old firmware to current firmware. You can see what it did to my charging over night with just one firmware upgrade.


i-52jrN5q-X4.png



It now takes an hour to go from 20% to 80%.

For medium long trips, we compensate by always charging to 100% before leaving the house even if we didn't need anywhere near that to get to the first supercharger on our leg.

During a long meal stop where I would normally have charged to just enough to get to the next supercharger and then left the table to move the car to make room for other cars and to not stress the battery more than necessary, I now just let it charge to 100%. i.e in cases where I wouldn't have charged fully but could have without loss of time, I now always do so rather than trying to take care of the battery by keeping high SOC charges to a minimum.

Tesla's change to prevent me from charging quicker when I need it has resulted me changing my behavior in a way that is way worse for the battery.
I know you said it now takes more than an hr to charge 20 to 80%, but would it be possible for you to translate the charging curves to time for comparison reasons. thank you
 

FlatSix911

Porsche 918 Hybrid
Jun 15, 2015
6,745
6,274
Silicon Valley
Interesting development...


Tesla owner David Rasmussen was among the ones affected, and he got one of the most severe drops we have seen. At the time, he told Electrek:
My 2014 Model S 85 was getting Rated Range of 247 miles until May 13.
Now after the next update, it continued to drop to now 217 miles. This is an 11% drop in 5 weeks.
On top of the range loss, the DC fast-charging rate at Supercharger stations has also been reduced. Affected owners are seeing much slower charging sessions.
Rasmussen has been plotting the battery capacity degradation of his Model S over the last 100,000 miles or so, and the drop is quite obvious:


Tesla-Range-Drop.jpg
 

sorka

Well-Known Member
Feb 28, 2015
8,168
5,942
Merced, CA
Interesting development...


Tesla owner David Rasmussen was among the ones affected, and he got one of the most severe drops we have seen. At the time, he told Electrek:

On top of the range loss, the DC fast-charging rate at Supercharger stations has also been reduced. Affected owners are seeing much slower charging sessions.
Rasmussen has been plotting the battery capacity degradation of his Model S over the last 100,000 miles or so, and the drop is quite obvious:


Tesla-Range-Drop.jpg

Now if that were only for throttled supercharging speed.
 
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