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AA to C Battery adapter

by zero_o, published

AA to C Battery adapter by zero_o May 3, 2011
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Summary

If you want to use AA batteries on C battery operated devices, this thingy is for you!
Remarks:
Attached stl file and blend file.
This part was designed using blender 2.5.
The blend file is 10 times scaled down the real size.

Instructions

Print it, and slide in an AA battery.

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I agree great minds do think alike.
I was just about to make one of these and decided to check here first.

Great minds think alike! :)

For lighter versions of the same concept check out: http://www.thingiverse.com/thing:4205http://www.thingiverse.com/thi... ;)

AA Battery Adapters

TeamTeamUSA's version looks great, but it looks like it is for a D adapter and not a C adapter. Did I miss something?

I really love those gripper panels! I bet those keep the battery in nice and snug!

Will a AA provide the same power as a C?

perhaps you could also make an adapter for 3 AAA in a C or D shell (maybe more power? I don't know battery specs)

Battery voltage is determined by the chemical compound.
Battery current is determined by how much chemical and electrode surface there is within said battery.

EG:
Alkaline batteries will give you 1.5 volts per cell.
Lithium Ion 3.6 per cell
Lead acid 2 volts per cell

The only way to increase the voltage is to stack more cells in series (EG pos to neg)
stacking in parallel gives you more current (pos to pos, neg to neg)
If you open a 9v battery, you will find 6 small cells in series.

Square 6v lantern batteries have 4 "sub C" cells in them.

Car batteries have 6 internal cell dividers.

A single AA cell will give you about .5 amp hours
A C will give you about 1.5 amp hours
A D will give you about 2.5

"amp hour" means you can pull that much current for an hour, half that for two hours or twice that for half an hour (its a ratio)

interesting! Thanks for the replys!

In many cases C batteries are used not only because they have more juice but mainly because they have less internal resistance and hence good for current hungry devices. However since rechargeable batteries have significantly less resistance then ordinary AA, They can easily replace C ones. (at the expense of recharging more often, as mentioned here by 77777773)

Regarding D shells, its not as simple since the D size is not just thicker but also longer, meaning some metal extensions are needed as well.

Buback - the batteries all put out about roughly the same amount of voltage, the difference is in how long they last... as Adrian points out, most of us have AA rechargeables, so it's nice to have the option to use this (and maybe recharge a little more often) rather than to have to get a new set of C batteries
&
amp; possibly a new charger.

I don't recommend using multiple AAAs in a larger housing, you could over-volt your device.

Brilliant! AA rechargible batteries are a lot more accessible than Cs, can't wait to print this

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