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Oh boy!
I've never been as excited about any fast charge system as I am about Kempower’s S-Series!

It’s … modular! Kempower has clearly considered charging and studied charger issues carefully. I got a chance to check out their S-series fast charge system, which is different from all the other fast chargers I’ve seen so far – totally and beyond recognition. The difference between the familiar ABB and Tritium fast chargers is shocking, as Kempower has done things as they should always have been done!

Modular? Yes please!

Kempower’s S-series consists of a charging cabinet (power unit) and satellites. You can connect between one and eight charging connectors to one charging cabinet, and each satellite can have one or two charging connectors. That means you could have four satellite posts with two charging connectors each or eight satellite posts with one charging connector each. Of course, you could put four charging cabinets in a row, for example, so that the charging field can be easily spread and expanded.

The satellite posts are amazingly sleek as they contain only control electronics and thus do not need as much space as ordinary fast chargers. This allows installation in places that aren’t big enough to accommodate a standard fast charger.

The charging cabinet has a control unit, dynamic power management (optional) and slots for four power modules. Each power module has two 25kW power supplies, so a total of 200kW of charging power is available if the charging cabinet is equipped with all four power modules. The system can thus be expanded as necessary, by adding power modules, satellites and/or charging cabinets. The maximum power of the 200kW charging cabinet can be divided in many ways – e.g. all 200kW for one charging connector or eight charging connectors with 25kW/connector, if all in use. The power of multiple charging cabinets can be distributed to all satellites in the charging field as desired; when the charging power of one car drops, the power modules are released for use by other cars.

Extreme reliability for fast charging operators – and drivers
The modular idea perfectly copes with equipment failures as well. If a power source in a module breaks down, for example, charging continues as normal as the other modules step in. Users charging their cars won’t even notice this as satellites continue to supply power; a minor power drop of 25kW for the whole system probably won’t even be noticed by the users. In other words, the modular design brings extreme reliability to fast charging. This is needed, thank you!

The challenge of fast chargers is placement and short charging cables
Kempower has definitely researched the weaknesses of existing fast chargers and done things differently, and in the right way. Because fast chargers are often quite hefty and big, placing them is challenging, and too short charging cables will not make placing them any easier. Especially if the car’s charging port is next to the left front tire, which can make positioning the car on the charger rather tricky if not downright impossible.

The cable management of the satellite posts has been carefully thought out and the engineered result is truly functional, flexible and easy-to-use cable handling! The cables are long enough. They go straight up from the side of the satellite inside the spring structure, so the cables are tangle free and they don’t drag on the ground picking up dirt that scratches the car. Even if the car cannot be parked in a completely optimal way, the car can still be easily charged – something that, e.g., ETron, I-Pace and Taycan drivers will definitely appreciate!
User interface – genuinely new!

The charging pole satellite’s user interface operates on a 7″ touchscreen with clear icons, and the amount of text is kept to a minimum. Authentication is done with an RFID tag, but the system also supports payment cards (local payment)! Unlike other fast charging systems, RFID authentication and connecting the charging cable can be done in any order, which makes the charging process super-easy.

The display is constantly on, so you can always see the charging status and charging power (kilowatts). At first glance, I didn’t think the interface seemed all that miraculous, but how wrong I was! The charging curve is displayed with a few clicks, which is a amazingly great feature – this should be standard on every fast charger.

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