More aggressive (sooner) supercharge taper on latest firmware?

[scottm]

Who knows?

This adds maybe 10-15 minutes more per SC on highway trips...

One thing not caught in the graph is charging TIME

I'd like to see the impact on lengthening the charge time to a given SOC (say 80% because there should be a ton of data on this target)

 

[apacheguy]

@scottm - Sure, I can provide the precise time it took my vehicle to charge from 20->80% with this taper curve. It took 40 minutes.

 

[apacheguy]

 

[Shaggy]

North Austin gave me 119 @ about 50% when I first plugged in... the B port wasn't yet enabled.

 

[FlyingCookie]

I saw my car taper down to 90kw at 28% today... I had Been driving very very hard prior to that, though, so the battery may have already been hot. This was about 5 minutes after plugging in.

In other news, a P85 at 35% SOC can pace a Mustang GT 5.0 from 60 up to about 100... twice... with some extended time near 130 as well... in a place...

 

[apacheguy]

I fairly consistently observed the 90 kw threshold at 40% over the past week. For reference, when brand new, the S85 crosses that point at 45%. Will share the data next week once I work it up.

 

[FlyingCookie]

I’m used to seeing 90kw at 40% as well. I’m looking at 99KW at 33% right now, so my previous data point may have been a fluke.

 

[islandbayy]

My restricted 90 pack (limited to 94kW charge rate) could hold 90kW through 60% SOC, now, I'm at 80kW by 50% and rarely can hold that through 60%. 50.2 firmware flavor.

 

[fcharland]

50.2 here too. And tested supercharging at VERY low temps of minus 13 F.

That removes the hot handle problem.

I got 118kw at start (5%) up to about 20%, then fell back to 100kw at 30%, and then slowly went to 70kw at 60%, 50kw or so at 80%.

 

[FlyingCookie]

Looking back, it looks like 10,000 miles ago I was getting 103KW at 29%. This was at 58,000 miles. I'm now at just over 69,000 miles and 30% is 99KW for me. 43% used to be 82KW and is now 80KW. Are we really losing ~2KW at any given SOC for every 10,000 miles?

Also interesting is that my car's charger cannot charge my battery above 96%, yet if I give a Supercharger 2 hours it'll gladly go to 100%...

 

[fcharland]

I've got the same pattern as you. 55 000 miles here. Though I get 100kw at 30%, with less mileage. Maybe it s more related to the firmware version rather than mileage?

Looking back, it looks like 10,000 miles ago I was getting 103KW at 29%. This was at 58,000 miles. I'm now at just over 69,000 miles and 30% is 99KW for me. 43% used to be 82KW and is now 80KW. Are we really losing ~2KW at any given SOC for every 10,000 miles?

Also interesting is that my car's charger cannot charge my battery above 96%, yet if I give a Supercharger 2 hours it'll gladly go to 100%...

 

[apacheguy]

Pretty sure Tesla has fixed the hot handle issue as I did not experience it at all. If you are still observing it, it might be worth pulling out the HV socket connectors from the charge port and giving them a good clean. Service centers should include this inspection with annual service, IMO.

 

[apacheguy]

Cleaned up the data. Agrees very well with the fleet data from ABRP (scattered small dots). Supercharging is slower for sure, but I'm fortunate not to be in @David99 's camp:

25% slower Supercharging due to degradation

 

[Shock-On-T]

Guys it's not just related to the cold weather?
(writing from sunny Sydney)

 

[apacheguy]

No, I have the ability to track battery module temperatures. I always filter out the data points that were affected by a cold pack.

 

[lymex2018]

Here is one of my supercharging chart:

Data recorded by Scan My Tesla.
Changing power is on the left axis and others are on the right.
Changing power is negative and the shape is always like this (for >8 charts).
SOC is equivalent to that of the dash.
SOC UI is equivalent to SOC of TM-spy.
Temperatures are in degree C.
The jumps of DC-DC current relates to the cooling of the battery.
My X 100D is of July 2017 build and firmware is/was 2017.50.3

 

[scottm]

Uhmmm.. that is a Superconfusing chart.

At least there is no green, which can be hazardous.

 

[David99]

Here is one of my supercharging chart:
View attachment 278217
Data recorded by Scan My Tesla.
Changing power is on the left axis and others are on the right.
Changing power is negative and the shape is always like this (for >8 charts).
SOC is equivalent to that of the dash.
SOC UI is equivalent to SOC of TM-spy.
Temperatures are in degree C.
The jumps of DC-DC current relates to the cooling of the battery.
My X 100D is of July 2017 build and firmware is/was 2017.50.3

What software do you use to do the graph?

 

[lymex2018]

What software do you use to do the graph?

I use Microsoft Excel 2013.

 

[apacheguy]

I overlaid Model 3 charging performance just for fun (blue crosses in case you couldn't tell)