[DAB]

Do I have to have engine on to use the USB point to charge my iPhone?
(Kia eNiro 2017)

 

[iooi]

With a EV it's better to have the car turned on (Ready To Drive) than in ACC mode. As ACC mode just takes power from 12V & if it runs low the drive battery will not top it up.

 

[fernbank]

Better still use utility mode - power is drawn from the traction battery:

"Utility mode (if equipped) The high voltage battery is used instead of the 12V auxiliary battery for operating the convenient features of the vehicle. When driving is not necessary such as while camping or when stopping the vehicle for a long time, it is possible to use the electrical devices (audio, lights, etc.) for long hours.

System Setting and Conditions
When the following conditions are satisfied, you can activate the Utility Mode function by selecting ‘User Settings>Convenience >Utility Mode’ in the cluster. "