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Try another adapter and read the results or read the manual of the app.
Hi @itachi12_hh;
Using the fast charger UCH10 (compatible with the Quick Charge 2.0 of the X Performance) you can obtain at 4V the max current of 2250mA less the current consumption of the device.
So the max current of 1730mA could be a fast charge current if the phone at the moment was consuming 520mA.
What charger were you using?