Buy a good cordless screwdriver and a separate winder. I use the ubiquitous Makita 10.8V cordless drill-driver and get all the benefits of the tool as a drill and a power screwdriver along with a string winder. I have three which are in use often and as a result always have charged batteries available.
Thanks for the suggestion Russell.
I already have a small but powerful cordless drill that I like, but I do find it to be a bit heavy and awkward to use as a power string winder. Maybe the Makita you mentioned is weighted differently.
I just found the new Black & Decker BDCS40G and like it a lot. No button to push to reverse direction ... just twist it in that direction: http://www.amazon.com/gp/product/B008R5259Y/ref=oh_aui_detailpage_o...
Oooh.... I like that a lot, great size, reversible and just $34 with free shipping? Dang, what's not to like? That's going on the gift list :)
Supposedly the lithium rechargeable battery will stay charged 18 months without use. I haven't charged it in 2 months.
Here's what I've used for years :https://www.google.com/shopping/product/12282468774818387428?q=blac...
Stock, it's slow and eats it's 4-AA batteries like candy.
BUT...... I modified mine by altering the battery holder to accept a wired 12vDC, 1A 'wall wart' transformer to it with a 6'-8' of thin low voltage zip cord. It quadruples the speed and doubles the torque. It's forward/reverse trigger is perfect.
It also excels at removing/installing pickguard & plate screws AND drilling small screw holes.
It's SUPER light and extremely maneuverable.
It's still going strong after 5 years with no adverse effects from the extra voltage & amperage.
More info available re: mod'ing the battery holder, available upon request.
I own the Ernie Ball power winder and have tried other powered solutions as well. I do not use it on anything with non-metallic tuner knobs. Back to the old hand winder or fingers for those (choice depending on condition, age and value). TBH, there is something to be said for using a hand powered winder. It's variable speed and bio-feedback keeps you from doing damage (most of the time).
I've got one too. It works OK though it's a little slow.
That all depends, Luke.
If the drill is being operated parallel to the pup in it's reverse mode, there can be a 45% decrease in strength in Alnico II and Alnico IV magnets. Alnico V are not affected by this.
However, if the drill is used perpendicular to the pup in it's forward mode, Alnico V & Ceramic magnets can loose 27.375% of their magnetic strength.
Both effects occur after 78+ straight hours of operating of the drill near the pickup .
That's all B.S. ;)
The short answer, completely disregarding irrelevant academic arguments and that 1 in a million exception, is "NO".
I seem to remember EVH using a drill near his pup for some sort of "Earwig with an ice pick" effect in the later 70's or early 80's. A sound I never wish to hear again from a guy who needs NO effects to get his point across. :)
Have a good one, man :)
p.s. It won't demagnetize your tuning machines either.