trying to save a cheap electric driller
I checked this list of capacities for Dewalt batteries, and most of them were above 1 amp-hour. Assuming they're not capable of running continuously for an entire hour, then they're discharging at a rate greater than 1 amp.

EDIT: I did some calculating off of rough numbers I could find concerning 7.2V drill operation, and here are the results:

A max 44 in-lb torque operating at 200 rpm for a 7.2VDC drill requires 2.3A.

The formula is:

Torque*RPM=Power
Voltage*Current=Power
Torque*RPM=Voltage*Current
Current=Torque*RPM/Voltage


if you've got torque in in*lbs and rotational speed in RPM, multiply your answer by 0.00188308048 to get the correct units of Amperes. (1 inch pound is 0.112984829 Joules, and 1 RPM is equal to 1/60 Hz)