Q&A for How to Use AAA Batteries As AA Batteries

It can be certain types of metal, but not all. Aluminum is the best because it can fit into small areas and it's foldable.

You have to make sure that the foil is snug between the battery and the end, tightly wrapped, and the battery isn't loosely attached.

No, it won't shock you. The power in AA/AAA batteries is not enough to shock you.

Not if done correctly, as long as the currents don't cross anywhere it shouldn't be a problem.

There is always some type of risk, even a small one, of fire when using batteries. Contact someone at your local game store for help with your exact device.

Yes, any type of conductive material will work. Keep in mind that some metals are sprayed with non-conductive coating and will not work.

That depends on the battery, they won't discharge any faster or slower when using foil.

The aluminium foil will corrode and disappear. AAA barteries have a lower output current than AA batteries and high drain devices (such as the one pictured above) may not work, or the battery/foil will get very hot as you are exceeding its limits.