I have an old drill motor that I got from a hand drill. It was a no - brand kind of drill that was cordless. It had two corroded batteries inside of it, so i could not charge them up to find the specs of the motor. How else would I go about finding the specs of this motor?
If you still have the batteries laying around, the voltage will typically be written on the casing somewhere. Otherwise, Ni-Cd batteries are typically ~1.2V per cell, so you can count the individual number of batteries.
Once you have voltage, you could hook up a power supply and an Ammeter to determine current draw.
Any other specs will probably be pretty involved to determine, and while those two methods ought to work for you.
Most motors have some info on the nameplate, failing that measure the resistance
at the terminals (it will be low, you might have to do a 4-terminal measurement,
but don't use too much current or the motor will turn)
Usually the stall current (voltage / winding-resistance) is approx 10 times the normal
load current, so you can estimate it that way. The size of a motor is the key limitation
to its power so how big is this motor?