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+ - Help: How to replace batteries with AC power

Submitted by
Xanthvar
Xanthvar writes "I am looking for a way to replace batteries in several small devices, with a power pack that can be plugged into an AC power source (like a wall outlet).

I don't know if such an animal exists commercially, but I have been unable to find it while searching the internet.( Of course this may be do to poor search phrase construction, but I haven't found the right combo yet)

I have several small device (one of those hand held games that have classic video games that you connect to your TV, for example) that uses 2-4 AA batteries, and it devours them a tremendous rate.

I would like to find an adapter that would insert into the battery compartment, and allow me to connect it to a power adapter (like those universal dial a voltage adapters that you can get from radio shed). I also have a couple of them that use 2 AAA batteries.

I have heard that there used to be something like this available for 9 volt batteries, but I cannot find them.

Now, aside from the obvious solutions like:
1. You should have purchased a device that had an AC adapter jack built into it (oops, I guess I shouldn't have been so cheap, but I am)
Or
2. You should use rechargeable batteries ( I am, but it is a huge pain to change them out all the time)

Does anyone know of a device that I can purchase that will do this, or of a relatively simple way to build such a device (preferably without the use of solder, as I don't have much experience with it, and don't have a good area to work on such a project as there are children around most of the time)?

I am not opposed to frankensteining something together, as I am sure that it will be a great learning opportunity, but I am not looking to reinvent the wheel if I don't have too.

Thank you"

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