[Hodar]

Wouldn’t it be determined by the resistance of saliva? 5a=5v/1ohm

Yes, you are correct - Ohm's Law applies.

However, the USB has LIMITED power output to no more than 0.5 Amps; thus the absolute maximum power the infant could be exposed to is no more than 2.625 Watts (5.25 Volts x 0.5 Amps).

2.625 Watts will NOT do this kind of damage.

[stuartcr]

Like you said, must be a malfunction.

[PA Engineer]

2.625 Watts will NOT do this kind of damage.

I'm with you on this. They are covering up something else. This is a current limiting device unlike say a 9Volt battery. We have all done the tongue test on a battery without this extensive damage.

There are aproximately 9 BTUs max of heat from a standard USB device. The infant's injuries are not consistent with this.

At a minimum it sounds like a wall outlet power chord, but the parents are planning on cashing in by misdirection.