Battery-less cordless screwdriver

[LCHIEN]

Anybody seen or used one of these Coleman Flashcell Cordless screwdriver with a 90-second charge time?

http://toolmonger.com/2007/10/16/col...ma-no-battery/

http://www.youtube.com/watch?v=u4iT4dZnWBE

its a cordless screwdriver with a super-capacitor for energy storage. While the capacity if the capacitor is only 1/2 that of a battery it recharges in 90 seconds and des not have memory or limited charge cycles of a battery. It solves the biggest problem with battery screwdrivers in that they're always discharged when you go to use them. This maybe discharged but it will be fully charged in 90 seconds. It you stay within a few feet of the charger then you can place it in the charger between uses while assembling a project and it will be fully charged all the time you are working.

Lists for like $80 but seen for $30 at outlets.

The possible drawback to me is that a battery has more or less constant voltage till it discharges but a capacitor will have declining voltage so when they say it will drive 22 screws (compared to 40 of a regular battery screwdriver) will it drive the first and last equally well?

[jackellis]

If they made a drill with a capacitoir and I could get it this instant, I'd be tempted...

I would not, however, buy a flywheel version.

[chopnhack]

I coudln't resist...........




battery - less and cordless

[drumpriest]

I'm excited about the future of supercapacitors, great advancement, but I agreewith jackellis, I'll wait for a real drill/driver to come out.

[cabinetman]

Now, lets see. With specs like that the charger should have a belt clip so you wouldn't have to run around to the charger. Better yet, if the charger was cordless and batteryless. And while you wait for the minute and a half, you could be turning in that half driven screw by hand.

Realistically, I would rather have the power and twice the longevity with a battery, even though it's a cool idea. My wife has her favorite flashlight that is batteryless, but has a crank arm to build a charge. That's kinda cool too.
.

[jziegler]

So is this one:

http://www.garrettwade.com/product.asp?pn=08C03.01

Jim

I coudln't resist...........




battery - less and cordless

[Mr__Bill]

I have run a lot of screws in with a Yankee screwdriver. Bearing down with all your weight keeps the bit in the screw, but when it slips out, boy does it do a lot of damage. After getting a Milwaukee screw shooter I only used it where power was unavailable, after the first battery drill/driver it became a curiosity to show people. Today I don't know where it is. Now it's brother the push drill I keep in my tool kit and use it often. Every year I put a new set of bit for it on my Christmas list. Santa hasn't delivered yet.


Bill, who is doing the last of the Christmas baking today

[thrytis]

I think one of the woodworking magazines (Wood or Fine Woodworking) had something in their blog last year about a regular drill/driver using the same technology they saw at some trade show. I think it was Ryobi. Maybe we'll start seeing more soon.

[drumpriest]

I think it was skill or something, but yeah, one of the inexpensive brands. Cabi, I'm going to have to disagree with you, I'm sick of buying new drills because the battery will no longer charge and they've changed the form factor. I suspect the nano-capacitor tech should last longer, given the level of manufacturer quality, which is what I'm waiting to happen.

[SawDog]

I coudln't resist...........




battery - less and cordless

You know, that was my first thought - before I opened the thread. I thought it was "holiday humor". GMTA, and all that!
Hal

[MilDoc]

Here's a review:

http://www.popularmechanics.com/blog...s/4223118.html

[LCHIEN]

Here's a review:

http://www.popularmechanics.com/blog...s/4223118.html

Yeah I read that review, I can google with the best of them.
But all the reviews more or less spout the company press release. None of them compare power on the last screw compared to the first screw. That's what I wanted to know since a battery has a constant voltage during its useful charge cycle but a capacitor has declining voltage.

[MilDoc]

Of course you are right LC. Still, an interesting driver for short term use.

[eezlock]

battery-less cordless screwdriver?

Yeah, that really looks like a real powerhouse type of homeowner grade tool for sure! If it is like the battery powered tools from Coleman that I have seen in the past....nothing to get excited about here. I think one would be better
served by buying a quality made screwdriver like a Klein or some other brand
than to spend good money on a piece of junk! Most of the low voltage tools
3 volt, 6 volt...etc. aren't worth much, just a waste of time! I guess that if you could get the proper sized bits for them you could do some small hobby
or craft type things with them but not serious work. eezlock