It's the EMI shield coupling inside the power supply, see [0]. Shouldn't happen with properly grounded chargers (but the charger in question is probably two-pro

It's the EMI shield coupling inside the power supply, see [0]. Shouldn't happen with properly grounded chargers (but the charger in question is probably two-pronged without a ground pin, like the majority of chargers). [0] https://electronics.stackexchange.com/questions/476895/ac-to-dc-power-supply-earth-ground-capacitance-on-dc-output https://electronics.stackexchange.com/questions/476895/ac-to...