Zbig
lvl.4
Flight distance : 7349 ft
Poland
Offline
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Not sure I understand your question. Spark will draw a maximum of 2A from a generic 5V USB supply for a total power of 10W and 1.5A maximum at 12V from a QC power supply for a total power of 18W.
In any case, the Spark battery is not connected to USB charger directly, very far from it. First off, the voltage has to be boosted up to over 13V needed by the 3S battery. The actual charging process it tightly controlled by the circuitry inside the battery case; it's way outside the USB power supply's competence. See my more detailed write-up where I try to clear some confusion regarding USB charging. |
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