Level 2 charging problems

[BarryP]

For Level 2 charging (with the modified iMiev EVSE) the iMiev stops charging after 40 minutes. I.e., it never charges to 100%. For Level 1 (with a KIA EVSE) the iMiev will always finish charging to 100%. I tried the iMiev Level 2 EVSE on my EV6 and it does work (charging to 100%). Is there a problem in the iMiev?

Charging is in a garage that varies from 0F to 40F.
Thank you,
-Barry

 

[kiev]

What is the model year of your car? All stock or any mods?

At first read this sounds like a weak cell in the traction pack or limited charging due to low temperatures, but for the fact that using the kia evse it charges to full.

i assume this is not a single episode but the normal everyday experience?

There is a pause that can occur during the first hour of charging, typically about 30 minutes pause--this is not what you are reporting?

 

[MickeyS70]

For Level 2 charging (with the modified iMiev EVSE) the iMiev stops charging after 40 minutes

How did you modify the EVSE?

. I.e., it never charges to 100%.

How far do you get, does it always stop at the same SoC?

For Level 1 (with a KIA EVSE) the iMiev will always finish charging to 100%. I tried the iMiev Level 2 EVSE on my EV6 and it does work (charging to 100%).

I’m pretty sure the EV6 uses a type 2 plug while the IMiev has a type 1?

Charging is in a garage that varies from 0F to 40F.

That’s cold, any issues during warmer temperatures?

 

[BarryP]

“What is the model year of your car? All stock or any mods?”
2012, no mods. Except it had a HV battery replacement in 2016.

“i assume this is not a single episode but the normal everyday experience?”
Now it is (since dec 2024)

“There is a pause that can occur during the first hour of charging, typically about 30 minutes pause--this is not what you are reporting?”
Correct. The EVSE disconnects and the green LED comes on signaling it’s done charging.


“How did you modify the EVSE?”
I’m trying to remember 12 years ago. But there was a company that put NEMA L6-20P plugs on it so it could run at 240VAC. Here’s info from their pamphlet:

Several people, early on this forum, upgraded using this.

“How far do you get, does it always stop at the same SoC?”
No. It just stops after about 40 minutes.

“I’m pretty sure the EV6 uses a type 2 plug while the IMiev has a type 1?”
They both use the J1772 connector and both uses Level 1 and Level2 within that connector.

“That’s cold, any issues during warmer temperatures? “
Don’t know yet. This started in December 2024 (the iMiev’s twelfth December of life). I have to wait for warmer. I suspect the iMiev will get worse in warmer weather since I’m not having problem at lower power and that points to a heat/thermal management issue.

Thank you!

-Barry

 

[kiev]

. The EVSE disconnects and the green LED comes on signaling it’s done charging.

and
does it always stop at the same SoC?”
No. It just stops after about 40 minutes.

and

both cars charge on 120vac,
Kia charges on 240vac
miev stops after 40 min on 240vac.
==========

These are good clues; one culprit i might guess is that one of the temperature sensors inside the OBC waffle plate™ is gettting hot and causing the session to terminate after 40 minutes when using 240vac input power. But seems like there should be some DTC thrown for a defect inside the OBC.

An OBDII dongle with one of the scan apps might be needed to read DTCs and also see the cell voltages and other sensor data that is sent over the CAN Buss.

 

[michael8554]

As an aside I googled for images of the EV6 charge port.
And see some images have a round 5-pin Type 1 socket in the top half.
And some images have a D-shaped 7-pin Type 2 socket in the top half.
And further investigation revealed that the Type 1 is a CCS1 socket, the other Type 2 is a CCS2 socket.
I didn't know that, Now you Know too.