[mastre_]

Can someone explain to this non-EE how current alone, as specified in milliamps in the absence of a specified voltage, can be used to specify a lethal condition? In other words, from here and other sources I'm inferring that 100mA can stop the heart, but does it not matter if it's from a (at?) 9V battery vs 1.5V AA battery?

[OkayPhysicist]

Well, the resistance is a fixed variable here, so voltage and current are tied together. Can't increase the amps without increasing the volts.