Kia Niro Forum banner
  • Welcome to the Kia Niro forum! We discuss all models of the Niro, including the Hybrid, PHEV and EV versions. We are glad you stopped by. Feel free to browse the various topics, along with out FAQs. To enable posting, you need to register for a user account. There is no cost for this. Just click in the upper right corner where it says Login/Join. We look forward to your continued parcipitation.

Curious 12v Power Outlet Limitations

6630 Views 3 Replies 2 Participants Last post by  Jay
In the Niro owners manual it states for the 12 volt power outlet to "adjust the air-conditioner or heater to the lowest operating level when using the power outlet." This seems like an odd requirement and I am hoping someone might be able to add clarification.

Is the lowest operating level the fan speed? Or is it referring to another "level"?

Also there is a stated 10 amp limit on the power outlet. Is this for each outlet or a total of 10 amps across all three outlets?

Thanks for any insights you can provide.
1 - 4 of 4 Posts
I don't have the schematics but I can guess. Looking at photos of the electrically driven AC compressor, I see no orange cables attached so I would say the compressor operates off the 12-vdc supply. If so, this is a heavy load for the 12-vdc to dc converter. Remember that 12 v is derived from the traction battery voltage through the dc-dc converter. Likewise, 10 A (120W) is a fairly heavy load all by itself for the 12-v dc-dc converter.

The kia niro manual shows a 40A fuse for power outlet 1, and 20A fuses for outlets 2 and 3 so each outlet has a separate fuse.
  • Like
Reactions: 1
Thanks for great insight.

So it appears the caution is if I was parked somewhere, engine off, with the AC running plus a load on the interior 12v circuit, then the drive battery could drain. OK, that makes sense.

But if I am driving, the AC is on Auto and the engine is doing it's thing to keep the drive battery optimum, I am thinking my 3 devices on the interior 12v each drawing 2.5 amps is relatively safe. And probably isn't making a big dent in the gas mileage.

Again, I don't have the schematics to confirm, but my reading of the warning doesn't restrict the warning to engine-off operation. If the power limitation is the dc-to-dc converter itself, then the warning applies to engine-on operation as well.
1 - 4 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.