The resistor is probably a "charger ID" and probably connects between the two non-power pins. You'd have to use an ohmmeter or multimeter set to ohms to find out what it's resistance is and what it's connection points are.
Your best option is to order the female XLR plug from Grin along with the Satiator, and use this existing plug on the Stromer charger plus it's cable to make an adapter from the Satiator's XLR to the Stromer's bike plug.
There appear to only be two wires on teh Stromer cable, and most likely Red is + and BLack is -, but you can use your voltmeter to determine actual polarity, and then after unplugging the Stromer cahrger from the wall, cut the cable off of it (leaving whatever amount of wire you wish on the charger, as long as you leave at least a few inches on the connector).
On the Satiator, the XLR uses two of the pins for power, and one for a sensor. You won't use the third pin, just the two power pins. You can plug the Satiator's XLR into the unwired female XLR, and use your voltmeter to measure which pin is + and which is -, by using the "force start" function on the Satiiator (holding the lower button until it engages charge mode).
Then solder the + wire from the stromer's connector to the + pin of the female XLR, and the - wire from stromer's connector to the - pin of the female XLR.
Close up the housings of the connectors and now you have the Satiator adapter cable to a Stromer.
The same basic instructions apply to make an adapter for any charger you want to use on it, that already has the right output voltage/current, or can be set to that.
