The Crystalsky charging hub requires an input voltage between 17.3 and 26.2 VDC at a minimum of 57 Watts. A typical HP laptop power supply e.g. HP67774 is able to fulfill these requirements, supplying 19.5 VDC / 65 Watts. Even the connector is the same. However, the pinout is different and...
To my knowledge, the original charger only supplies a constant voltage of 13.2 V to the battery and the charge controller inside the battery ensures correct charging.
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