If you take two identical long range Model 3 traction batteries and performed the following test what effect would it have on longevity?
Both batteries would be in a temperature environment that did not vary below 60F or above 80F.
One battery would be charged to 80% and stored on a shelf for a year or have the 12V battery removed from the car (very close approximation to the same thing). Actually Tesla recommends disconnecting the 12V for long term storage if AC charging power is not available. Quote for a Tesla Service document - "Storing the vehicle for three weeks or more (unless it is plugged in)"
The other battery would be in a plugged in Model 3 not driven for a year but the charge level would be set and maintained to 80%.
At the end of the year approximately how much life span would be lost in both scenarios given the following assumptions?
Phantom drain is supposed to be around 1% per day or about 3+ miles; however, over the ownership of the car I have seen up to 20 miles of drain in a given day.
I will use 4 miles average for the following observations:
4 miles X 365 days = 1460 miles of Phantom drain in a year
It is my understanding the charger will charge the battery back to 80% when it has lost about 10 miles/3% of the 310 mile range.
1460 miles / 10 miles is approx 146 3% charge cycles on the traction battery (and an equal number to the 12V battery) in a year.
I know hardly anyone would ever not drive their car for a full year (maybe it would apply to someone serving in the military) but I am still curious what the difference would be to the traction battery longevity.
Both batteries would be in a temperature environment that did not vary below 60F or above 80F.
One battery would be charged to 80% and stored on a shelf for a year or have the 12V battery removed from the car (very close approximation to the same thing). Actually Tesla recommends disconnecting the 12V for long term storage if AC charging power is not available. Quote for a Tesla Service document - "Storing the vehicle for three weeks or more (unless it is plugged in)"
The other battery would be in a plugged in Model 3 not driven for a year but the charge level would be set and maintained to 80%.
At the end of the year approximately how much life span would be lost in both scenarios given the following assumptions?
Phantom drain is supposed to be around 1% per day or about 3+ miles; however, over the ownership of the car I have seen up to 20 miles of drain in a given day.
I will use 4 miles average for the following observations:
4 miles X 365 days = 1460 miles of Phantom drain in a year
It is my understanding the charger will charge the battery back to 80% when it has lost about 10 miles/3% of the 310 mile range.
1460 miles / 10 miles is approx 146 3% charge cycles on the traction battery (and an equal number to the 12V battery) in a year.
I know hardly anyone would ever not drive their car for a full year (maybe it would apply to someone serving in the military) but I am still curious what the difference would be to the traction battery longevity.
