I have a drill that i'm using and i need more power so i was wondering if i could connect the 9.6v drill battery with 6 sub-c 1.2v cell in series. I just want to make sure that it is not going to damage the 9.6v drill battery
I'm not convinced it would spin faster, it may have a speed control in its electronics for the motor.
It's been a few years, but motor speed control IC's do not simply regulate the voltage they also look at other things, they also have current limiters. I know the DC cooling fans have them, not sure about drills. Better quality cassette decks have speed control IC's on their motors, but the best ones like my Sony use a magnetic sensor on the flywheel in a feedback loop to control the motor.Would this not simply be in the form of voltage regulation? Or at least regulating 'average voltage' using PWM? Either way if it is regulated, raising the voltage will have no real beneficial effects, and whether it is or not, it will run the risk of damaging the electronics... really not worth it when you could simply buy a drill designed to operate at a higher voltage.