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AA to C Battery Adapter

by jwags55, published

AA to C Battery Adapter by jwags55 Nov 26, 2014
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34178Views 10061Downloads Found in Electronics

Summary

Another AA to C battery adapter. I really liked MORE_MPG's design, but wanted to tweak it slightly.

Wall thickness is 0.75 mm.

Autodesk Inventor source file and STEP file included.

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Very nice design and would do great in a pinch.

That said, in an electrical circuit or device, there are 2 really important things. One of them is voltage. The other is current. The classical way you hear them talked about is by comparing them to a pipe with water in it. The voltage is like the water pressure which pushes things down the pipe. And current is like the amount of water flowing down the pipe. Some electronics need lots more current but don't need more voltage.

That's where the batteries come in. The C cell batteries can give more current than the A batteries. If you needs lots of current and try to get it from a tiny battery, it won't work as well.

Just what I'm looking for! I have a radio I use in the shower for the regular 5 minutes every day. The c cells last about 5 years, so this is in practical terms a good saving for me. I also like the reduced size compared to many of the other designs. Is it a remix of MORE_MPG's design?

Just saved me from spending 12 bucks in getting C cell batteries at the corner store. Thanks!

Printed at 0.25 layer height with MG Chem PLA on my Anet A8.

Unless C batteries cost 4x as much, this is not a savings. The energy store of an alkaline AA battery is 2,122 mHa. The same C battery is 7,800 mAh. So in other words, the C batter will last 3.6x as long! Or you will throw away 3.6 AA batteries for every C battery. That is a theoretical limit. Batteries can not go to zero while still maintaining a constant voltage. In actual usage you will be throwing away 4-5 AA batteries for each C battery.

I think it is a great idea for an emergency situation where you need C batteries, but in the long run you will not save money.

Rechargeable batteries....

Costco sells AAs amazingly cheaply (~75 for $~10) and doesn't sell C or D. Also, AA NiMHs can be acquired cheaply, while C and D are much less common.

Yes, C batteries have much more capacity and typically have a lower $/mAh . There are non-typical situations where these adapters can be beneficial. For example, I receive about 50 AA batteries each year for free that would normally be discarded after about 5 minutes of use in a medical tool. Thank you for your input. I'm sure others may find it helpful.

I didn't know you could do that!!

Comments deleted.

Sweet! Just what I wanted, thanks for the design. They're modular, quick to print, far cheaper then buying mass produced ones; even when printed in Taulman 910.

Great design, works flawlessly. Thank you.

If you made a solid version, the user could choose how thick to make the walls by specifying no infill and no top/bottom layers, and adjusting the number or width of perimeters.

Perfect! Huge saving over C batteries!

Great!
It need only 8.5cm3 of filament per 8 items. And the result looks great! Good choice to finish the last 2-3 meters of filament, and also useful!

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