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

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Does it have to be aluminum, or can it be another metal?

Community Answer

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.

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Question

Does this really work? When I tried it with my remote, it turned on and then off again.

Community Answer

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.

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Question

If I touch the foil while the device is on, will it shock me?

Community Answer

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

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Question

Can this damage the device?

Community Answer

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

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Question

Can this cause a fire even if the batteries are placed correctly?

Community Answer

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.

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Question

Can aluminum foil be replaced with copper foil when using AAA batteries as AA batteries?

Community Answer

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

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Question

How long will this last? I need my alarm clock to work for at least 9 hours before I can get more.

Community Answer

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

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Question

If I put foil on the positive side instead of the negative side, will something go wrong?

Community Answer

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.

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