What kind of screwdriver would I use for this type of screw and where would I get one?

I have a dysfunctional AA, AAA Rayovac battery charger that I want to dismantle for parts.  I went to dismantle it when I noticed it has 3 strange-looking screws on the back holding it together, I attempted to use a small flat-head screwdriver to unscrew it but it didn't work.  And I'd rather not try to break it apart as for fear of damaging any of charger's components.  Here's an image of what the screws look like; sorry about the image quality, that is the best image I could get.  So does anyone know what kind of screwdriver or other tool I'd need to dismantle this thing?

Picture of What kind of screwdriver would I use for this type of screw and where would I get one?
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orksecurity6 years ago
Tamper resistant screw. Needs either a spanner tip screwdriver, or to be modified so you can remove it.

_Usually_, if you see one of these, that means whoever put it there will be upset if you muck with it. Never invoke what thou canst not banish, and try not to get yourself into more trouble than necessary.
If you can't open it, you don't own it.
Conversely, if you don't own it, you shouldn't open it. Sometimes it is appropriate to deter other folks from tampering with *your* stuff.

I've generally seen this particular type of fastener used to discourage vandalism rather than on consumer goods.

Of course, my user name sums up where I'm coming from on this concern. Sometimes security-through-obscurity *is* the right price/performance tradeoff.
Yes, indeed! Tamper-resistant screws and bolts on publicly-installed objects (for example, the one-way screws on lavatory enclosures) are entirely acceptable.

However, obscure or tamper-resistant fasteners on small products which I have paid good money for are an annoyance and an insult to my intelligence and common sense. They reflect the values of a patriarchal, corporate, and consumerist society.
Mostly agreed. (I don't think they say anything about "values" other than "life is hard enough in the technical service department when you DON'T have folks damaging the product and then trying to blame us for it."

Void warranties all ya like. But if you want the warranties to be there when something really does melt down under normal operation, don't complain _too_ much that the company has to take some simple precautions to keep the warranty affordable.

"If you can't open it, you don't own it" -- but once you own it in that sense, it isn't their problem. For this application I prefer tamper-evident packaging to tamper-deterring, but keeping the manufacturing cost down so I can buy this stuff at a reasonable price also counts for something.

The knife cuts both ways.
Yes, indeed! If you choose to open it, then you are taking ownership -- in the full sense that any subsequent damage or failure is your problem, not the company's.

And as you say, tamper-evident packaging (like those aluminized stickers over one screw) are a fine way to have your cake and eat it, too.
However... on the back of a battery charger? Sure, yank 'em.
BucketBasher (author) 6 years ago
I would like to thank everyone for their input, you've all been a big help! :)
iceng6 years ago
Here is a pic of the working end of the tool.
Wierd Screws.png
kelseymh iceng6 years ago
Well done!
frollard iceng6 years ago
it's good except for the white 'hotspot' from the camera light source :D
:-) Like!
rickharris6 years ago
With CARE! cut across the slot with a hacksaw and use a normal flat screwdriver.
frollard6 years ago

Yours looks like step 19 or 20, and as others say, its commonly available by name online or in many local hardware stores.
kevinhannan6 years ago
This is a variation of a security screw and needs a scredriver bit that is shaped to accept it. You can buy these very easily from hardware stores like machinemart.com