View Single Post
      09-29-2020, 08:52 PM   #31
ketrab
Private First Class
ketrab's Avatar
United_States
44
Rep
165
Posts

Drives: '13 F25 2.8i , '21 G5 45e
Join Date: May 2019
Location: Chicago IL

iTrader: (0)

Quote:
Originally Posted by flighttracker44 View Post
Someone can probably educate me here but from my understanding the 45e has 3,7 Kw as max input from any source (wallbox, fast-charger). This would translate to approx. 6-7 hours from empty to full.
?
Can someone explain to me how do you calculate 6-7 hr required based on the 3.7kWh max input? Even based on the online calculator it came to be aprox 5hrs.

If the car has 17kWh usable battery (US) and you are saying 3.7kWh wouldn't this be ~ 4.5 hour (by math)?

Let say you have a charger at home rated at 40a:
240v * 40 amp = 9600 watts capable

Even though I have 9.6kW I can only charge at the rate of 3.7kW but this still would be 4.5 hour no? Where is my logic wrong? Unless after 80% rate slows down?

Also with 3.7kW charge we don't need anything more expensive than 16a charger correct? 16*240=3840 watts > 3.7kW 45e
__________________
f25@110K and counting...

Last edited by ketrab; 09-29-2020 at 09:03 PM..
Appreciate 0