Submitted by Gert van Veen on Mon, 2014-12-22 10:49
From some other subjects I got curious why Tesla isn't further improving the charging capacity. Therefore this question.
Can someone calculate the maximum charging capacity of a Tesla 85kwh batterypack.
A tesla with a 85kwh batterypack has 7,104 lithium-ion batteries. Each battery, therefore, has a capacity of 11wh. The charging capacity of a lithium-ion appears to be equal to the capacity. Lets start with 10 amps. At a charging voltage of 15 volts, a battery can take up to 150 W power. The largest superchargers give only 120,000 w. This makes that 120,000 / 150 = 800 batteries are charged at full power.
Is it possible to increase the charging capacity so that the charging time can be reduced to 5 minutes?