The subject is covered at some length in this thread.kwsmith007 said:I'm sure this subject has been covered endlessly somewhere but I'm sorry I can't find anything out about this. As I'm sure everyone is aware the Lear/Home Depot equivalent charger is only rated at 16 Amps @ 240 Volts for a charge rate of 3840 Watts. Most other SAE J1772 chargers are rated at either 30 or 40 Amps For a potential charge rate of 7200 or 9600 Watts. Does anyone know definitively if these higher current chargers will charge the Fisker faster? Are there other issues such as cooling or warranty? Is the charging circuit in the car limited to 16 Amps? The Lear charger is such a POS compared with some of the others and it's huge as well.
My understanding is that the Karma only draws 16 Amps at 220V so the extra current capacity is not really need for the current generation of the car. The car draws only as much as it needs so there is no difference between the Lear charger and other chargers in that respect. The main difference is the additional telematics, network connectivity, and delayed charging capability, plus the aesthetics of the other chargers.