f1geek said:I'd like to see where in the VW e-Golf Manual it says that 24 kW charging stations are better than 50 kW charging stations (by the way, charging is expressed in units of kW and battery capacity is expressed in units of kWh).
Additionally, I'd like to see some data that shows 24 kW charging (actually around 22 kW on an e-Golf) has a real world impact on battery degredation as compared to 50 kW (actually about 44 kW on an e-Golf).
There's another good reason why BMW and VW are installing 24 kW charging stations: Money. The 24 kW stations are MUCH cheaper to purchase than 50 kW stations. Additionally, the station owners (who are NOT Chargepoint, by the way) can avoid additional electricity demand fees with a 24 kW stations that they would have to pay for with a 50 kW station. Remember, electricity is not free.
f1geek said:I have read the owner's manual. It does not specify a quick charging speed, only how often to use quick charging. Considering you believe the Germans to be so good about specifying how to treat the car, because it's not listed in the manual, it doesn't matter.
I have never seen my charge rate limited and I've charged at 44 kW after driving at 60 mph for over an hour.
I have read that VW was so confident in the battery chemistry that they did not need to implement liquid cooling. What I'd like to see is empirical evidence that charging at 44 kW is harder on the battery than charging at 24 kW, taking into account the fact that either of these speeds will be rarely seen on a well maintained e-Golf. All I've heard from you is theory about charge rate, and while that theory makes sense, I'd like some proof, that's all. I'm guessing you don't have any proof.
f1geek said:I have read the owner's manual. It does not specify a quick charging speed, only how often to use quick charging. Considering you believe the Germans to be so good about specifying how to treat the car, because it's not listed in the manual, it doesn't matter.
I have never seen my charge rate limited and I've charged at 44 kW after driving at 60 mph for over an hour.
I have read that VW was so confident in the battery chemistry that they did not need to implement liquid cooling. What I'd like to see is empirical evidence that charging at 44 kW is harder on the battery than charging at 24 kW, taking into account the fact that either of these speeds will be rarely seen on a well maintained e-Golf. All I've heard from you is theory about charge rate, and while that theory makes sense, I'd like some proof, that's all. I'm guessing you don't have any proof.
f1geek said:You still haven't provided any empirical evidence that VW e-Golf batteries shouldn't be charged at 44 kW.
Tesla that sells a car with a 60 kWh battery in their Model S. Tesla lets the battery charge at 120kW (or maybe even 135 kW, depending on the charging station). That is 2C. According to your theoretical argument, Model S 60 batteries should be failing left and right. Do you have evidence of this happening?
Somehow it's ok for Tesla batteries (which are made by Panasonic, as are the batteries in the e-Golf) to charge at 2C. While you can argue Tesla doesn't understand how to manage batteries, I doubt you can prove it.
Enter your email address to join: