Efacec Unveils 24 kW Semi-Fast Charger

OCT 10 2014 BY MARK KANE 20

Efacec Unveils 24 kW Semi-Fast Charger

Efacec Unveils 24 kW Semi-Fast Charger

Efacec Unveils 24 kW Semi-Fast Charger

Efacec 24 kW Semi-Fast Charger

Efacec has a new product in pipeline – the 24 kW QC24S fast (or maybe rather semi-fast) charger with 95% efficiency.

The world premiere is scheduled for late October at the 2014 eCarTec in Munich, Germany.

According to Efacec this will be “the smallest, most compact, stylish and more competitively priced DC charger in the market“.

While the price remains unknown, let’s look at those dimensions:

  • 904mmW x 330mmD x 415mmH ( 35.6”W x 13”D x 16.3”H )

Size and weight of this charger (55 kg) enables it to be hung on the wall or mounted on the pedestal.

From the start it will be available with CCS plug and then also with CHAdeMO plug near the end of this year.

“The new QC24S, to be shown at the next eCarTec in Munich this coming October, has been designed to serve both European and North American markets. The European model is powered by 3 phase 400 V or single phase 230 V and has a combo2 plug. The North American version is equipped with a combo1 plug and is designed to be powered by either 3 phase 208 V or single phase 240 V. This is an important advantage compared to other units that need 480 V, 3 phase for this lower power output of 24 kW, and once again shows Efacec’s concern in adapting its systems to market conditions and customer’s needs.  Like the rest of the Efacec DC Fast Charger family, the QC24S can be integrated into any network and is available for any customer.”

Pedro Silva, Managing Director of Efacec Electric Mobility stated:

“this new product is a breakthrough and will be a huge contributor to the adoption of EVs, being an affordable charger like never before in the market. We have invested heavily during this last year in developing this new concept and in its design to make it easily integrated in any network. We have also extended our slogan “choose the color of your energy” even further by offering the possibility to customize the front panel to any customer, with a stylish design and attractive look.”

Here is video of all current Efacec  charging solutions, excluding QC24S:

Categories: Charging

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20 Comments on "Efacec Unveils 24 kW Semi-Fast Charger"

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If the price point is right, I’ll get one.
I use the MiEV to get to/from work and in the evenings we have to use the ICE due to lack of charge. This way we could charge via DC-QC and not use the ICE.
Happy to have bought the MiEV with the DC-QC.

To use it at home you’ll need a circuit that supports 24kW, or more precisely your home electrical system must be able to handle a device that generates 24kW DC from an AC source.

I’m not an electrician, but will be surprised to hear that typical homes can handle that much.

A US home with 200A service or more could in theory accommodate this.
Now, some load centers aka breaker panels would need an overhaul before accepting breakers over 100A, which this unit most likely requires. This would make it for an expensive installation, on top of the QC itself which I trust won’t be cheap either…

Im no electrician, but it sounds like they sized this perfectly for a standard north american home.

200A service is commonly available as an upgrade.
100A breakers exist for many panels, though rarely used.

I don’t think you need to apply the 80% rule as a quick charger is not a sustained load. You should be done charging in less than an hour, and IIRC the definition of sustained load is 3h+

Confirm with an electrician, but a common 200A service and a standard 100A breaker would likely suffice, making this a unit actually usable for residential.

This QC is “only” 95% efficient, and if following ANSI C84, should accept 228 V with no impact on performance => 111 A required (assuming perfect 1.00 PF).

Also, while it may seem perfectly reasonable not to consider this a ‘continuous load’ indeed, someone with a Model S + CHAdeMO adapter, or simply several vehicles (likely in a commercial setting), would break this assumption.

I imagine that the power of this unit can be dialed down to accommodate circuit limitations.
As I’ve learned the hard way however (thinking that capping a PV inverter to 5.2 kW would satisfy a 25 A limit), it might still be tough to convince an inspector to look beyond the nameplate rating…

Correct. It’s based on the potential of the device, not actual use case. That’s why EVSE are defined by code as continuous loads.

I can potentially use my deep fryer for 24h straight, and that’s using the full 1800W of a 15A circuit (yet is UL and CSA approved with a 15A plug on it). And yes, it would be drawing full power all the time if I used full baskets of frozen food.

Just saying. 😉

Rapidtables sezzzzz:


100 amps at 240 volts AC single phase.

The max load in most homes is a 50amp breaker, but 100amp is common to feed a subpanel. You would want to locate the unit close to the main breaker to minimize the wire needed, which gets expensive.

I’m guessing the unit itself it not cheap. At the EV fair the juicebox folks showed up with an open source DCQC and said it cost $4000 to build. That’s do it yourself prices.

Ps. in case it needed mentioning, 48kw is 200 amps. Ie., if you want a full DCQC for your leaf at home, use your 200 amp panel and plan to turn off all of your lights and appliances while you charge.

Kidding, kidding, don’t flame me bro…

I don’t see a big demand for this in home charging. Charging overnight at lower rates just fine.

Are they implying a standard household 220 circuit can drive that thing?

A. 4 times a standard L2 charger. I’m guessing for the right price, hell yes its going to have customers.

B. Yes, see above.

Nice! Unlike L2s, this seems very adequate for businesses like stores or restaurants, where people typically stay less than 1h.

I guess it’ll boil down to the price (unit + installation), and managing access, e.g. how to offer e.g. 30 minutes free to customers, reserve a time slot for each one, etc.

PS: Thanks Mark for calling this unit a “semi-fast charger”! I like that name. Short, descriptive and accurate.

Semi-Fast is an established term for ~20kW even if it is AC charging.

Lower power chargers like this and the BMW 24 kW will be perfect for the smaller battery packs in high voltage motorcycles, which probably will only be able to accept 20-30 kW for a bit.

Why not a cheaper 10kW or 12kW home charging unit with a CHAdeMO connecter that would allow a Nissan Leaf to charge in half the time. Make this unit cheap enough so I could install one at home… I am shopping now for a J1772 charging station, but would go for the home CHAdeMO unit if the price is right..

Well, a friend did install a Tesla highpower wall connector (80 amps) for his new model S, on a 100 amp breaker off his existing 150 amp service, but if this thing was charging a model s or equivalently sized 85 kwh battery, then it would be a continuous 100 amps and therefore require a 125 amp branch breaker.

But you’re not likely to find these 24 kw chargers in the states on anything much less than a 200 amp mains service. Anything less is cutting things a bit close.

Several 24kW units, mostly Fuji’s, have been installed in MA and VT this year. They seem more reliable than the Nissan/Sumitomo QCs, which need frequent filter cleaning or they overheat.

In this video, Efacec looks to be designing the EV “filling station” of the future.

I would love a 10kW CHAdeMO version of this for my LEAF, at home.

If you have a use for a quick-charging at home, and you don’t mind a lesser look and a little DIY, here are 12, 20 and 25 kW CHAdeMO-compatible chargers starting around 4k$: