Japan’s transport ministry will limit the number of power banks allowed on flights and effectively ban their onboard use starting in mid-April, a move prompted by a recent series of alarming incidents.
A USB transceiver is required to withstand a continuous short circuit of D+ and/or D- to VBUS, GND, other data line, or the cable shield at the connector, for a minimum of 24 hours without degradation
Shorts aren’t really a concern with decent hardware, but as far as I can tell that’s the problem with the power banks that are failing - they’re not decent hardware, so minor damage attached to a very energetic bag o’ chemistry results in (very occasional) fiery disaster.
Shorts aren’t really a concern with decent hardware, but as far as I can tell that’s the problem with the power banks that are failing - they’re not decent hardware, so minor damage attached to a very energetic bag o’ chemistry results in (very occasional) fiery disaster.
Is that for USB A and USB C? USB PD could be riskier if it shorts VBUS to D+ or D- since it can negotiate up to 12 volts, IIRC