Quote:
Originally Posted by JSH
Faster charging makes a big difference when charging in cold weather.
If the battery is cold the car will run the heater and circulate coolant to warm the battery so it can be charged safely. On a typical 120V / 12 amp circuit you can use the majority of the electricity provided just to keep the battery warm enough. If you are using 1 kW to heat the battery that only leaves 0.4 kW to charge. The charge takes forever and wastes a lot of electricity. Jump to 11 kW and 1 kW to heat is a small fraction of the energy and the charge time is near normal.
|
More of a situational instance, but this is true so definitely one of the first things to consider on a cold day. Charging lithium batteries below 39F and especially at 32F and below is a challenge. You would need to heat them. But in these instances i'm not factoring in outside temps. But yeah that makes the testing harder right now for a lot of us as the optimal won't always be the same lol.