Charging loss %

It might read engine related MIL codes which in the Kona I am not sure how useful that would be. I find even though a newer stand alone scanner typically serves you better than a bluetooth dongle/app you might still have issue getting much of anything out of the Kona electric. Its seems different in how it wants to let you access the body module, ABS, SRS and even my latest/greatest handheld scanner is having trouble communicating with its assorted computers.

 

Likely because there is a "gateway" (firewall) between the OBD2 and the multiple CAN busses.

 

Yes, paid version of SoulEVSpy has logging. I don't recall what the free version does - it might also do this.

It really just writes a file to phone storage when you use the thing. Useful for troubleshooting, if nothing else.

Edit: look in /Download, or /storage/emulated/0. File names would be SoulSpyData.<time>.csv and SoulSpyLog.<time>.txt.

 

Yeah likely, it just means I will have to buy yet another scanner at some point, hopefully I won't have need for it for a few more years.

 

Over my 2020 Kona's first 500 miles, the dashboard display reports 4.4 mi/kWh, presumably based on power drawn from the battery. Using power reported by the Level 2 EVSEs, it got 3.91 mi/kWh.

This would make the charging efficiency 89% (plus or minus 1% because the car display rounds off), which is consistent with @apu's figure.

Temperature while charging was in the 50's.

 

I tried my level one home charger. The charging power is 1.4kw it took 60hrs to full charge the efficiency is around 76% I am wondering why it is so low. I found the On board charger is hot all the time. I don’t think the hot temperature is caused by the charging current. 12A current can not creat that temperature. Looks there is heater inside the charging system heat the on board charger. When I use my 32A level two charger I saw the same hot on board charger because it is 32A I thought it maybe reasonable. The 32A charging efficiency is around 90%. I prefer use small current to charge battery to extend the battery life when I am at home but when I found the very low efficiency of level one charging I give up. Not sure wether other EVs have the same low efficiency by using Level one charging. Hyundai engineer should do something to improve it.


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120V charging with the granny cable is indeed less efficient but typically we are talking about a loss of only ~2-5% more than 240V EVSE which are typically around 90%. 76% seems quite low. FYI Hyundai's official spec for the onboard charger efficiency is 91% regardless if the source is 120 or 240V.

 

For what it is worth:

From 90% to 100% SOC, this was the draw from the grid (temperature @ 24c):



...so another data point, which would work out to a 72.5 kWh push from the grid to fill up frm 0% to 100%...although I prefer to measure a large uplift (say from 30% to 90% for example) for a more accurate snapshot.