Battery pre-heating for DC Fast Charger not working if charger<150KW? Battery pre-heating is a feature that can help to maximize the charging speed of electric vehicles. It works by warming up the battery before it is plugged into the charger, which helps reduce the amount of time needed to charge. However, this feature may not work if the charger is less than 150KW. This was recently experienced by an individual who was monitoring their battery temperature while driving to a destination charg