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I'm not aware of any EVSE which does get hot or require cooling - There's nothing in there but a tiny power supply and a couple big relays. What does get hot is the charger, which is located in the car and even the tiny 3 Kw one in my Mitsubishi requires liquid cooling with a pump, a radiator and a fan. Those are the really, really expensive parts of EV charging and when something there fails, you'd better hope it's still under warranty. Running the car charger at max when you don't need to just seems like a really foolish thing to be doing
Don, you have good points worthy of consideration.
 

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Just got ID4 2023 pro s rear wheel drive
Looking at the clippercreek HCS 50 9.6 kw output
Or the HCS 60 power output 11.2 KW
Any help here would be appreciated...
I've had my CC for almost 9 years and love it. It's a dumb one so not too compatible with cars with no timed charging abilities but the ones you're considering have it I believe so go for it.
 

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I've had a Clipper Creek charger since 2013. It's mounted on a post at the end of my driveway and totally exposed to the weather. I have it on a 60 amp breaker and it charges my ID 4 from 10% to 80% in under 5 hours. It still looks and performs like brand new. I am very happy with it and would recommend this brand.
 

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I'm not aware of any EVSE which does get hot or require cooling - There's nothing in there but a tiny power supply and a couple big relays.
I guess it depends on what you mean by “require cooling”. The ChargePoint Flex and Autel MaxiCharge have rear mounted heat sinks to passively radiate heat out of the unit. I’ve seen a couple reports of the Flex getting hot enough to shut off while charging if the conditions are just right. So these units are pushing the limits of how easily heat can get out enough that the radiator makes sense, especially for 48A.

Units that aren’t as compact like Clipper Creek’s and the JuiceBox I suspect are simply radiating internally, relying on the empty volume to help keep temperatures within the spec’d range. Which is also fine.

As you point out, there shouldn’t be much heat at the EVSE.
 

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I guess it depends on what you mean by “require cooling”. The ChargePoint Flex and Autel MaxiCharge have rear mounted heat sinks to passively radiate heat out of the unit. I’ve seen a couple reports of the Flex getting hot enough to shut off while charging if the conditions are just right. So these units are pushing the limits of how easily heat can get out enough that the radiator makes sense, especially for 48A.

Units that aren’t as compact like Clipper Creek’s and the JuiceBox I suspect are simply radiating internally, relying on the empty volume to help keep temperatures within the spec’d range. Which is also fine.

As you point out, there shouldn’t be much heat at the EVSE.
Realistically, there shouldn't be much of ANY heat inside an EV. The relay (contactor) electromagnets are the only high-powered part and they'll only dissipate several watts to maybe ten watts. And if the supply conductors and the conductors in the J1772 cord are sized appropriately and properly torqued into their lugs, the shouldn't get warm either.

Do some EVSEs use Solid-State Relays rather than electromechanical contactors? I'd avoid any EVSEs that do that! I want the guaranteed isolation of the opened contactor contacts!
 

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Do some EVSEs use Solid-State Relays rather than electromechanical contactors? I'd avoid any EVSE that do that! I want the guaranteed isolation of the opened contactor contacts!
If only manufacturers listed what they used. I couldn’t tell you what different units use. The Emporia for example marks RL1 and RL2 on the PCB which control L1 and L2 current flow through to the cable, but since the packaging for them doesn’t show identifying markers on the top, I couldn’t tell you much more about them, other than Emporia seems to have them labeled as relays. Autel’s sits under tape and so I can’t identify it either (see attached screenshot).

I know ClipperCreek is loud enough to be heard 25’ away from the unit, so I’d be floored if it wasn’t a contactor.

I mostly am pointing out what I have seen in practice when it comes to dissipating heat. While ChargePoint and Autel both have ”smart” features, I wouldn’t expect that you need a powerful enough ARM processor to require a heat sink as big as these units are packing. There is clearly some heat from somewhere though, and it’s during charging that you can feel a bit of heat coming off the heat sink with the Autel unit I picked up.

Finger Thumb Gadget Engineering Electronic device
 

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@Nai3t, thanks for the confirmation. Is this from your unit? Do you know if there are warranty stickers that get voided by opening up the unit? I’m kinda tempted to open mine up and take a peek while it’s not hooked up.
 

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@Nai3t, thanks for the confirmation. Is this from your unit? Do you know if there are warranty stickers that get voided by opening up the unit? I’m kinda tempted to open mine up and take a peek while it’s not hooked up.
No, not seals or glue or blocked screws. But I voided the heck out of my warranty so that wasn't really a concern of mine. But Clipper Creek definitely designed their units to be fully serviceable.
 

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Is board clear coated to prevent rust and water damage on the board. If it is...then they didn't spare on quality.
Not sure, but the front of the shell is a single piece. The back panel sits inside the front shell and has a gasket between the two plastic pieces, in addition to the plastic being shaped to prevent water from getting in. Even if the rear gasket were to degrade water wouldn’t have a good way in for a while. Not sure about the front which has some light pipes for LEDs, but I’d assume those are treated in a similar manner such that the light pipes are just fixed in place to the front piece and form part of the seal for the front.

The board sits on pegs, away from the front and back shell. Unsurprisingly it is mostly empty space, but as mentioned it looks easy to service.
 

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I use a Tesla Wall Connector with the J1772 handle. Works great. ID.4 charges at 11 kW every time. Model Y charges at 11.5 kW.
 

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Are you using Gen 1 80A EVSE.... i have bought one for my rental property in CA absolute best and quality is top notch.
48A generation 3. It’s available on the Tesla web site (or app). It can pair via Wi-Fi with another Gen 3 Tesla Wall adapter for load sharing on the same 60A circuit. The other one can have a NACS handle or a J1772 handle.
 
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I'm not aware of any EVSE which does get hot or require cooling - There's nothing in there but a tiny power supply and a couple big relays. What does get hot is the charger, which is located in the car and even the tiny 3 Kw one in my Mitsubishi requires liquid cooling with a pump, a radiator and a fan. Those are the really, really expensive parts of EV charging and when something there fails, you'd better hope it's still under warranty. Running the car charger at max when you don't need to just seems like a really foolish thing to be doing
Great points... Any knowledge about overall charging efficiency at different rates, as far as electrical consumption? There will be conversion losses of course, which to my understanding are greater at L1 than L2, but probably pretty similar at different L2 Amperages? I think the bigger concern would be in battery management, cabin preheating, etc. at least in the cold. How much extra energy is being used for BMS to charge low and slow compared to faster?

I'm also interested in the relative value of warming up the battery shortly before departure with scheduled charging - This would seem to favor charging at a higher rate for shorter time just before departure. It would also be marginally better for battery health to depart on a warmer battery. Its better for my mental health to depart with a warm butt and hands :p

I agree that lower level charging will be best for the charging equipment, and that those components are not cheap. Just curious about the overall balance - I'd argue that its rarely worth charging at 48A in the ID.4 unless you have a particular use reason to do so. I'd also assume that you're paying some costs by charging as low as 16A.

I'm currently charging L1, as my new garage isn't built yet. I'll have a 60A capable circuit, wired up to 50A outlet and breaker, for my 40A Juice Booster 2 EVSE - at least at first. That will allow use of a higher power welder, etc on that outlet if I so choose, and ability to upgrade to a hardwired 48A with just a breaker swap. Anyway, I'm currently charging 12A 120V, which is painfully slow and often doesn't cover my daily driving, so have to charge between trips at times too (I'm in and out a lot). I'm just really interested in how to best balance all the factors - battery/charging equipment etc health during charging and subsequent driving, cost of electricity, overall efficiency of charging (sep from cost, more for environmental reasons), and of course convenience - but at this level they're all pretty convenient. Down the road I'll likely install a hardwired unit and use the Booster only for travel/emergency. I can take it to the lake house and charge there off a welder outlet in the garage, or use the 120v attachment for L1 charging, since my 2023 didn't come with a L1.
 

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I'm also interested in the relative value of warming up the battery shortly before departure with scheduled charging - This would seem to favor charging at a higher rate for shorter time just before departure.
In winter, yes, but in summer, slower and cooler is better. I'd like VW to give us user-selectable charging amperage in the menu like what BMW is doing with their current offerings.
I'd also assume that you're paying some costs by charging as low as 16A.
Do you mean dollar-wise, due to the additional ~8% L1 efficiency loss?
 
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