DC drills have a permanent magnet motor, AC drills don't. you need a magnetic field to begin with for an AC drill to produce a current like this.

Whoa NO! Only if it is a rechargeable battery can you charge it. Recharging a disposable battery can cause it to explode, leaving alkaline acid splattered everywhere. DO NOT attempt to charge a disposable battery for any reason.

Rechargeable alkalines are a scam, invest in the real thing and get 1000+ charges from the same battery.

the clock in my class has a rechargeable alkaline

dude u changed your profile pic

lol sweet :-P .... like you could buy that charger, and use ANY alkaline battery in it?? heh

Never attempt to recharge a disposable alkaline, or even these fad "rechargeable" alkalines. Boycott alkaline for the real deal, and catch up to the modern era. Alkaline batteries are 19th-century tech, and offensively-obsolete. NiMH and Lithium batteries are offensively superior in every category.

The motor alone, maybe, not the gearing for the drill. at 10mph, you would be spinning that motor at over 45,000 rpm with the chuck just rammed into the tire, which would burn the motor. The brushless generator is still the best option unless your power demand is that high.....remember that you have to pedal that power back into the system too, no energy is free...

This won't damage a cordless drill, especially the "one-speed" type. You will not get any output from a variable speed, because the circuit will block voltage in reverse. The only damage in most, if not all cases, is wear and tear. Cordless single-speed drills are ideal emergency generators when turned in the same direction as their commonly-used direction (usually backwards with your right hand, if it were a bicycle crank), just remember that the polarity will be reversed. To power the drill in a CW direction puts battery-terminal A as positive, to crank the drill like a generator in the same direction makes the same terminal negative for recharging or general power. A double-ended allen-wrench (or S-wrench) is an ideal crank, and the chuck is all but made for the job. Keep this in mind should some cosmic holocaust befall humanity....Simple motors will not be damaged by the EMP blast, and can still generate power...

I actually hooked an 18-v drill up to my bike (hand-cranking it never broke 8 volts, and averaged 5 for the most part). As you can see, the way I hooked it up is a little unorthodox - not directly to the wheel (that would give me about 9 volts at a heart-wrenching 25 mph, in addition to sticking out a mile). I used a 6" wheel to take more advantage of the torque, transferring it somewhat efficiently from the bike tire. I was able to get a good 18v out of it that way (and bursts up to 21 volts, but I'm pretty sure that hurts the drill), but the drill motor provided a surprising amount of drag. It felt like the drill added an extra virtual weight of 40 pounds to my riding load (This changes depending on what the leads are connected to). I wouldn't recommend using a bike as a reliable method of charging batteries unless you are a serious biker with some serious thighs. Note the wall socket added for sheer geek chic. This took about two weeks' worth of spare time for me to cook up using materials lying around. I'm thinking about making an instructable for it, but it's a really intense bunch of detail that I don't have a ton of time for at the present. After biking for about a mile and a half, producing an average of twelve volts at around 1 amp into some rechargeable batteries, I produced some awful sore thighs and hot, quarter-charged NiMH AA goodness. I am looking to convert this system into solar, let the sun do all the work for me. The drill is a reliable emergency method of charging things. If you use a voltage regulator and/or a zener diode, you can charge your cell phone a tiny bit. But jeez your muscles get tired.

please let me know where can i find that voltage/amperage generator please and how much it cost? and how supose to be conected? a 12 to 1.5 voltage regulator will be perfect?

A simple part (NE-7812) will suffice as a 12v regulator. Connection diagrams can be found...

Maybe THIS will help...Alleged to handle up to 4 amps...

With the losses in the system, no. You take electricity generated elsewhere, convert to chemical (charge battery), convert to mechanical (drill), convert to electrical (generator), convert to chemical (battery), loosing at least 50% along the way. Why not just use a charger direct to the end battery?

jtobako, I take you haven't watched the video? You are hand cranking the drill, and using that as a dynamo/generator.

I was wondering that, too =]