P85D Model S Battery fade in HK

[deku]

90% charge, 369km on the first day (mid august 2015)
100% charge @ 405km on the first week

90% charge, 362km at late December 2015 @ about 8000km
100% charge, 400km at late dec 2015 about 8000km

90% charge, 351km at late January 2016 @ about 10,000km
100% charge, 386km at late January 2016 @ about 10,000km

Very worried with battery fade, faster than expected, mainly use supercharger, 90%/100% charge about 60/40
lost 5% range for 10k km! by 100,000km will lost 50%???

My last car odo is 171,xxxkm in 6 years. I drive to work, NT to Island side roundtrip everyday.

 

[Lerxt]

As Tesla explained and has been discussed on this forum, charging to 100% should never be done unless you are going to drive it to 90% straight after charging, as it degrades the battery. A drop of your magnitude is fairly normal and if the experience of others is anything to go by, the fade will reduce to a few % a year.

 

[ediot]

using 90% charge figures, 18/369 = 4.8%
using 100% charge figures, 19/405 = 4.7%

from what i've read, the tesla batteries generally experience a 4-5% fade in the first year, it then slows down to 2-3% per year afterwards. your figures seem to suggest a fade of almost 5% within half a year.

i wonder if supercharging does affect battery life - there is cooling to prevent battery overheat etc, but you're still pumping a relatively large current into the car, compared to home charging at 25-45 km/h.


i came across this article, which seems to suggest that Supercharging is recommended to be used only when necessary...
http://www.greencarreports.com/news...del-s-does-supercharging-cut-battery-capacity

 

[stardestroyer]

Ediot - after reading the article you posted, I believe the pack-balancing would certainly help in saving some capacity.

 

[Titus]

Mine is down to 357 from 369 at 90% after 13k kms
Even if it goes down to 300 it's still enough for my purposes in HK. Still more range than an i3 or Leaf

 

[Jian Yang]

Do not charge to 100%. Absolutely unnecessary in HK, and kills the battery faster.

 

[jsiu]

If possible, use less super chargers, 32A single phase or 3 phase will be good and provide reasonable charging rate.

 

[MuppetOwl]

All of the P85D in Europe did show around 15km less after the 7.1 update. Looks like HK has the similar numbers as Europe and not US so the same apply for your P85D.

Tesla have changed the typical wh/km for P85D from 189 to 196 in 7.1 and 85D did get more km shown as it did change from 186 to 176 wh/km

 

[LuckyLuke]

Yea my P85D (16000km) changed from 399 to 386 after the 7.1 update

 

[MuppetOwl]

Battery capacity is 76400 wh usable and 4000wh buffer

76400/189 = 404km
76400/196 = 389km

 

[Xarreo]

Yea my P85D (16000km) changed from 399 to 386 after the 7.1 update

doubted is that a reason as my battery also fade recently after 7.1 Upgrade. Anyone have similar finding?

 

[pupik]

have no fear... :smile:
my P85D (14000km) after the 7.1 also 350-355km (for typical settings) before 7.1 361-366 for typical (small range for temp. bat. -5C - 20C)
my friend and his P85D the same...
Anyway, use the car between 10-90% or preferably between 30-70% SOC
... and usable 77kWh is true -> 85kWh is same like 691hp :biggrin: EMS = Elon Musk Style :cursing:

 

[cyrushk]

may i know where i can get this app?

- - - Updated - - -

may i know where i can get this app?

 

[pupik]

may i know where i can get this app?

My own application on Linux...

 

[cyrushk]

like it so much. very useful. if it runs on windows or mac, it will be perfect

 

[pupik]

like it so much. very useful. if it runs on windows or mac, it will be perfect

thx :smile: maybe I prepare version for all platforms :wink:

 

[deku]

Good to know. Thanks everyone

 

[cyrushk]

where can i download it once available?

 

[pupik]

where can i download it once available?

just now, not yet... I prepare public version ...

 

[cyrushk]

Thanks!