Quote:
Originally Posted by hayden55
automotive engineers hate 12v systems but we are stuck with them over going to higher voltages because of pita factor.
|
Yes, 12V systems are long out of date. We should have switched to 24 and then 48v decades ago. It looks like the rise of 48V hybrids and EVs might finally move accessories like power steering, A/C, and water pumps to 48V.
Quote:
Originally Posted by hayden55
But yeah somebody try differing your amps on your 240v charger and note the efficiency change. The longer charge should be more efficient and it is better for battery longevity. Fast charging reduces cycle lifes available a lot more.
|
In the summer when it is 70F overnight - yes lower amps will be more efficient (to a point). Right now when overnight temperatures are at or below freezing the car will run the heater all night.
EDIT: I decided to test this and plugged in my car to charge. With the ambient temperature at 41F and my charger set to 24 amps the charger is delivering 5.8 kW to the car and the car is using 2.0 kW of that to run the battery heater.
