The record-breaking charging curve of the smart #1

But before we dive deeper into the topic, a big THANK YOU to Simon from the EnBW mobility+ team. After I had a nice 10-90% charge on one of their EnBW Hyperchargers, he provided me a date sheet with the current, voltage and a few other details. So this article can be as precise as hardly any other. Of course, this is always a lot of fun for me and is therefore as precise as possible for you. :)



CCS 150 kW - Not just a quantum leap for smart


Coming from the smart fortwo, I still talk about "fast charging" when I only mean the 22 kW charger. I retrofitted it to my 2013 smart fortwo, as it had just 3.7 kW as standard.


With the smart # family, however, a new era is dawning for smart. We can finally charge CCS and the #1 with its 66 kWh (62 kWh usable) puts smart straight ahead. "Up to 150 kW" is promised and the smart #1 manages this consistently from 10% to just over 30 %. After that it goes down quite linearly to still 40 kW at 80%. All in all, it manages the charge from 10% to 80% in less than 30 minutes. Nobody else can do that with this size of the battery. It's not who has a particularly high peak, such as Tesla's Model Y with 250 kW, that impresses, but who can maintain it over the whole chare.



Ladekurve smart #1 (smartOS 1.0.3 EU) DE


Practice had also shown that the #1 not only does "up to 150 kW". The smart does then 153 kW to 158 kW from 10 to 30 % and still over 100 kW at 50 %. At least that's what I saw in Paris on Tesla's V3 Supercharger.


Übersicht des Ladevorgangs



Top values with established cell chemistry


Apparently, smart has decided to take a risk-free approach with the battery. NCM523 sounds adventurous, but it is no longer a new cell chemistry. The main advantage of this is that it has already been tested widely in the field and there is enough experience in the automotive industry. However, this rather robust chemistry also suggests that one could definitely have a even higher capacity with more innovative cells. Unlike newer LFP cells, the #1 has the advantage that it can withstand cold temperatures very well. It must be very cold for it to no longer show its typical charging curve. And thanks to battery cooling, there was no slump in the charging curve even with 1,400 km in one go.


smart China verkündet Preis für den BRABUS und hat große Pläne für die Zukunft



And the last ace up smart's sleeve is the relatively high battery voltage. Although it is still only a system with a nominal voltage of 400 V, like the Mercedes EQS, the smart has a fairly high voltage for it. Shut off voltage at 0% is 370 V and at 460 V it reaches 100%. In this way, the current can be kept relatively low during the charging process and even with the 158 kW, the smart does not exceed 435 A.


Of course there is more information about the #1 in the smart EMOTOIN Wiki: smart #1 (SUV)

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