TeslaFi - how can 5.22kWh be 10% of 75kWh?

[pdk42]

OK, so this is TeslaFi's view of a journey I made this morning:

Apparently, I used 10% of the battery and 5.22 kWh. But - 5.22kWh is a lot more than 10% of 75kWh, so what's going on?

I can't remember what the car said the consumption was, but I'm guessing it was more than 257kWh/mil - since that's a pretty amazing number and not something I'd expect at this time of year.

 

[Andywil]

OK, so this is TeslaFi's view of a journey I made this morning:

View attachment 623550

Apparently, I used 10% of the battery and 5.22 kWh. But - 5.22kWh is a lot more than 10% of 75kWh, so what's going on?

I can't remember what the car said the consumption was, but I'm guessing it was more than 257kWh/mil - since that's a pretty amazing number and not something I'd expect at this time of year.

How is 5.22kWh more than 10% of 75kWh.
10 x 10% = 100% therefore 10x 5.22kWh = 52.2kWh.

 

[Alex987854]

It is 10% of the 70% you started with. 70% x 75 = 52.5

 

[GeorgeSymonds]

It is 10% of the 70% you started with. 70% x 75 = 52.5

Its saying 70% to 60% so it is 10% of the 100%. If it was 10 % of 70% it would be 70% to 63% That said, a 75kwh battery will not have 75kwh useable, more like 70-71kwh but the maths still don't work.

I think the OP has it the wrong way round (its less than 10% not more as Andy says), but this is why I don't use these 3rd party apps. I urge people to look at the actual data the API provides and ask themselves how these apps magic up other information without applying either stretches of the imagination or dodgy maths at times. They even admit their data accuracy is only 95% although how they work that out is again anybody's guess.

 

[Alex987854]

They even admit their data accuracy is only 95% although how they work that out is again anybody's guess.

90% of all statistics are made up.

 

[AndrewGR]

OK, so this is TeslaFi's view of a journey I made this morning:

View attachment 623550

Apparently, I used 10% of the battery and 5.22 kWh. But - 5.22kWh is a lot more than 10% of 75kWh, so what's going on?

I can't remember what the car said the consumption was, but I'm guessing it was more than 257kWh/mil - since that's a pretty amazing number and not something I'd expect at this time of year.

90% of all statistics are made up.

See my post on 'Real kWh/mi' for an indication of TeslaFi inaccuracy over a longish period. For a single journey it is likely that the error in the statistics will be much higher. Average Wh/mi since owning?

 

[pdk42]

See my post on 'Real kWh/mi' for an indication of TeslaFi inaccuracy over a longish period. For a single journey it is likely that the error in the statistics will be much higher. Average Wh/mi since owning?

Thanks - I'll take a look at that link.

 

[MrBadger]

2 things you need more knowledge of to understand why.

1. What was the rated kWh of you battery at that time?
2. At what point of the drive was the missing data? You don't have 100% data coverage of the drive.

It would also be useful wrt #1 what sort of temperature it was.

Oh, and is this statement correct?

Apparently, I used 10% of the battery and 5.22 kWh. But - 5.22kWh is a lot more than 10% of 75kWh, so what's going on?