The voltage is right but the amperage may be way too high and fry the
drill--

the person who wrote this needs to enroll in a basic electricity class

too much amperage capacity in the voltage source will not fry anything, a
device will only pull what it needs based on the resistance of the drill or
whatever

he could hook up his drill to an industrial battery that is the size of a
house, that is rated at 12V and 1 million amps, and it would not hurt the
drill

a shorted drill is a different matter, it should be thrown away, a fuse can
protect a short device from melting etc., but shorts are exceeding rare in
cordless drill anyway