Can you tell us what your commute is, and your charging strategy is?If anyone can give me a bit more thought on my post above that would be awesome! Thank you
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Can you tell us what your commute is, and your charging strategy is?If anyone can give me a bit more thought on my post above that would be awesome! Thank you
How much do y’all think cold affects total capacity? I’m at 295 for 1 year old awd around 8000 miles, measured at 40F
Temperature?
Colder temperatures can easily increase Wh/mile by 30% (basically use of cabin heat).
Your 30-32kWh spent for 50% battery might not be so out of whack - assuming the car started at 77.6kWh then if the battery has lost perhaps 5% capacity in 13000 miles (not unreasonable initial loss and should stabilize like this for a long while) and taking into account the below zero buffer of 4.5% that you don't want to test :
77.6*0.95*0.955=70.4 kWh usable above zero, 50% is 35.2 kWh
35.2kWh would give you 121 miles at 290 Wh/mile.
You can calculate your battery 100% capacity from in-car figures (kudos alansubie4life) like this:
1) Note rated miles remaining from beside battery icon with car set to Display->Distance
2) Note battery % from beside battery icon with car set to Display->Energy
3) Note down projected range (miles) and recent efficiency (Wh/mile) from the "energy graph" app
Total battery capacity is Projected Range*Recent Efficiency / Rated Miles Remaining * (Rated Miles Remaining/%)
Note that the amount from 0% to 100% on the battery gauge is 0.955 of this amount as mentioned above. You can then calculate how far you could go at a given consumption rate.
In the UK, in the winter at 0 to 10 degrees Celsius I'm using about 315 wh/mile on average on country roads but 280 at 20 degrees Celsius
You could test if climate control is affecting your range by turning it off on your test trip.akenham,
Thanks for the reply.
below is my data
battery display in miles: 144mile
battery display in % : 50%
in energy graph
efficiency: 302 Wh/mi
project range: 115mi
Total capacity = 69.46KWh.
the number looks not bad. However, the real driving experince is more like the number captured in the image. With 40% battery, only go 78.7miles and 24kWh in 40% battery change means 60kWh total battery capacity which is big gap to 69.46KWh.
Another thing makes me suspect battery issue is software update twice; one at the first day I book service and the second udpate is almost the same date the techician cancel my appointment. Wh/mile suddenly improve to 220Wh/mile and back to 290Wh/mile on the same road I drive daily and the temperature is not much different in these days
akenham,
battery display in miles: 144mile
battery display in % : 50%
in energy graph
efficiency: 302 Wh/mi
project range: 115mi
Total capacity = 69.46KWh.
the number looks not bad. However, the real driving experince is more like the number captured in the image. With 40% battery, only go 78.7miles and 24kWh in 40% battery change means 60kWh total battery capacity which is big gap to 69.46KWh.
Another thing makes me suspect battery issue is software update twice; one at the first day I book service and the second udpate is almost the same date the techician cancel my appointment. Wh/mile suddenly improve to 220Wh/mile and back to 290Wh/mile on the same road I drive daily and the temperature is not much different in these days
I did. little changeYou could test if climate control is affecting your range by turning it off on your test trip.
Have you tried charging the battery to 100% to see what the actual range shows on a full charge?
The Model 3 is pretty inefficient on short range trips but becomes more efficient on long range driving. I lose 6 miles of range on a 2 mile round trip but the numbers look more normal when I drive trips of 20+ miles.
I have a very similar (sad) battery state. Projected range will depend on your driving and outside conditions.
Projected range IS NOT the nominal range. There is no point to try calculate the battery capacity from it.
To get 220 Wh/mi, I have to drive very very calm, using a chill mode perhaps, and the weather must cooperate (~70F, no rain, no wind). I would be totally okay with 290 Wh/mi on a less than perfect day.