Which EVSE to buy?

Well your Kona's onboard AC charger can't take advantage of more than 32 amp 240V EVSE, so its just added expense with a 40 amp EVSE. Unless you want the portability you might be better served with a directly wired or hardwired EVSE, you will save at least a $100 on a suitable 14-50 outlet for a non hardwired unit. Generally speaking the most inexpensive EVSEs are Chinese units with questionable safety certifications. The more expensive units likely have Chinese components assembled in North America with extra do dads like wifi, usage monitoring and likely with appropriate certifications. Pick your poison or level of risk aversion. I bought a "cheapie" unit off amazon a couple years ago, seems to be working fine.

 

I bought the Grizzl-E EVSE, it is made in Canada and works great. It can be set for 32 or 40 amps, 32 is what the Kona requires.

 

InsideEVs put out a buying guide of their top 5 picks.

https://insideevs.com/features/341500/the-ultimate-buyers-guide-to-home-ev-chargers-plus-top-5-picks/

Note that if your jurisdiction follows the latest National Electrical Code, EVSEs with adjustable current settings, like the Grizzle, need to be hardwired.

 

If you buy it have them option it for 32amps, in the future you can change the option to 40 amps very easy. It is completely waterproof if you put it outside.
I had mine setup with the NEMA 14-50 plug, it is the same as a Electric Stove or a 50 amp RV plug, I can take it with me if I move or travel.

 

I forgot to say it is not hard to find, you can order direct from Grizzl-e in Canada https://grizzl-e.com/product-category/canada/

 

From what I've read, Grizzl-E is what I'm going to buy when I need one. Right now I'm able to charge at home using the stock Hyundai charger on 240V, and at work I have access to over 30 L2 chargers.

Here's another place to get one https://www.amazon.com/dp/B08Q22651D/ref=emc_b_5_t

Installing a 2-pole GFCI panel breaker to a 4-wire 14-50 outlet is a lot easier than you think if you've got the time.

 

Based on Consumer Reports ratings 2 years ago, I settled on the Mustart Travelmaster portable level 2. It can be accessorized with several adapters to fit different outlet types (example, standard dryer if visiting distant friends/relatives). So far it's performed flawlessly and is reasonably priced on Amazon. Just my 2 cents.
https://www.amazon.com/gp/product/B07TF8BGM4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

 

Check with your electrical utility company to see if they have any discounts or incentive programs; You might be able to get cash back on certain models of EVSE, or need an EVSE with certain capabilities to take advantage of discounted electricity prices.

 

Suggestion:
I had a 32A EVSE installed at home and I get great value out of it. It has a type 2 socket rather than a cable. I just use the type 2 cable I keep in the trunk.
However....
If I had installed a standard weatherproof 230V 32A outlet and bought a portable EVSE that switched from 10A to 32A in stages, I could have avoided the need to buy a second one for when I'm travelling (for me, the Hyundai "granny" EVSE 240V 10A max doesn't cut it).
In Australia, the DC fast charging network is still being developed and not every Tesla destination charger will work on the Kona. With the portable EVSE, I can use 15A caravan park outlets and (with the right plug adapter) the 32A 3 phase outlets typically found at show grounds. When I plug in, I set the power level on the EVSE to match the outlet's rated power.
It would have saved me hundreds of dollars had I done it in the first place.
Anyway, just a thought...

 

Bought and received Grizzl-E. Problem is I have an upstream GFCI panel breaker that won't stay closed. The Grizzl-E unit has a built-in GFCI, and the manual recommends against having an upstream GFCI (in the panel). Never occurred to me that two GFCI's protecting the same load wouldn't play nice together.

I'm waiting on tech support reply, and expect to hear that I need to replace my panel breaker with a non-GFCI, which is not a big deal for me (I'm an EE: never touch the energized circuit or you'll let the MagicSmoke out)

I'll post an update when I hear back from Grizzl-E

 

GFCI stand for Ground Fault Current Interrupter. It just turns off the circuit if there is a short circuit to ground avoiding a potential for getting shocked by the short circuit. It just a safety device.

 

Yep. Get your sparky to show you what to do.
My installation was a ROLEC Wallpod $AUD950 + $AUD550 to install it. The portable cost $AUD1100. My costs almost doubled once I realised I would need the portable.

 

Wait, what? You can't use a GFCI on a level 2 EVSE feed, by definition, it uses no neutral connection. And
because it uses the safety ground as a signal reference, it has a [very small] "ground fault" all the time.

_H*

 

But surely it can still monitor current imbalance between L1 and L2? The test leakage to verify ground I've measured at 0.2mA on my portable EVSE, way below the trip point of what we downunder instead call an RCD, residual current device.