Curious Question , about battery temperature , when DC charging in winters .
In mild winters 10 - 20 C ( California weather ) ,the i3 takes longer to charge than in summers.
The energy consumption ( KWH) also decrease by the car as per the charger in 30 mins
Is it
A) Battery is cold, and the energy is being used by heaters to heat up the battery ?
Unlikely - as total energy consumption is less in 30 mins along with charge percentage , compared to summers .
B)
Battery is cold, and even charging does not increase the battery temperature enough to bring it to optimum temperature .
The heater in the car is not being used , and is probably used only in extremely cold conditions
It be be also a case , where the heater is slow and needs longer to heat up the battery, and so not useful in DC charging
This also means the battery generate little/insignificant heat with DC charge.
In mild winters 10 - 20 C ( California weather ) ,the i3 takes longer to charge than in summers.
The energy consumption ( KWH) also decrease by the car as per the charger in 30 mins
Is it
A) Battery is cold, and the energy is being used by heaters to heat up the battery ?
Unlikely - as total energy consumption is less in 30 mins along with charge percentage , compared to summers .
B)
Battery is cold, and even charging does not increase the battery temperature enough to bring it to optimum temperature .
The heater in the car is not being used , and is probably used only in extremely cold conditions
It be be also a case , where the heater is slow and needs longer to heat up the battery, and so not useful in DC charging
This also means the battery generate little/insignificant heat with DC charge.