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Battery holders of course hold batteries and are VERY useful in electronic projects especially those that require batteries. This is the simplest battery holder I could come up with. The best thing is that it is cheap and it uses household items that everybody should have. If you want to make a holder for a larger battery then adjust the dimensions accordingly.

Keep in mind that this is my first instructable, so please be gentle. And please hit the little + thingie up there.

Step 1: Materials and Tools

For this holder you need tape of some kind. I used electrical tape because its awesome and it is maybe a better insulator than cellophane but if you don't have electrical tape then use cellophane, its better than duct tape in this case. You also need cardboard preferably from a cereal box because it is sturdy and thin. You also need aluminum foil because it is conductive and easily shaped.

You need a pen to mark the measured points on your cardboard and aluminum foil. A ruler is needed to accurately make the holders otherwise you're going to have one wonky battery holder. You need an exacto knife or scissors. An exacto is more exact ;) but scissors work wonders cutting the tape straight. The golf tee is for scoring the aluminum it isn't neccesary.

Step 2: Measure

Measure the approximate dimensions of your battery.

In order to get the right dimensions you must measure the width as accurate as you can. This dimension is the most important because the battery must fit.

The length desn't have to be exact but get as close as you can. Remember not to measure the nub on the end of the positive terminal.

I measured a AAA and it was 1 cm wide and 4.3 cm long without the nub.

Step 3: Mark and Cut Your Cardboard

First make a vertical line on your cardboard. (assuming you laid it with the long side facing you)

Then somewhere along your line make 4 ticks each 1cm apart.

Make a 4.3cm long line on every tick perpendicular to the first line.

Finnaly make a 3cm long line on the other end of your 4 lines.

Then cut the outside lines that you drew on your cardboard. It doesn't matter what order you do it in.

You should now see 2 lines on your cardboard.

See the pictures for more details.

Step 4: Measure and Cut Aluminum Foil

Make a line 4cm long.
Make 5 marks on the first line spaced 1cm apart.
Then draw lines 3.5cm long perpendicular to the first line on the marks you made before.
Then close off your box with a 4cm line on the end.

Cut the outside lines on your aluminun foil box.
Then cut the inside line on your box.
You should now have 2 pieces of aluminum foil both with a line down the middle and each piece should be 3.5cm long and 2cm wide.

Fold each piece in half along the line.
0.5cm from one end on each piecemake a cut 0.7cm long.
Do not cut from the part where you folded it over.

See the pictures for clarification or more detials.

Step 5: Score and Fold Your Cardboard

Get your piece of cardboard that you cut out previously.
Use your exacto knife and score along the 2 lines on your cardboard.
Fold the sides up in the way that is the easiest.

OPTIONAL

Flip your piece of cardboard over so that you no longer see the side that you drew on before.
Make 2 marks close to one end and another 2 marks close to the other end. Each mark must be 1cm from the side closest to it.
Then draw 2 lines from one end to the other following the marks opposite each other.
Score along these lines.

I made mine this way because it helps to give the finished product a better look.

See pictures for better explination on how to do optional step.

Step 6: Aluminum Foil Meet Cardboard

Take a piece of foil and 1cm from the end make a mark. It should be close to the end that doesn't have the little piece folded up.
Do the same to the other piece.

Take your cardboard and line up a mark on your foil with the edge of one of your side walls.
fold it over the gap at the end of your cardboard and do the same at the other end.

Take a piece of tape longer than your aluminum foil and tape the foil to the end of your cardboard.
Repeat on the other end.
Take your exacto knife or scissors and cut down in the corners of the tape that overhangs at the bottom.
Then fold down the excess tape to cover the bottom.

Step 7: And You're Done ;-)

You are now done.
Test it out. Just pop in a battery and connect your wires to the tabs. It doesn't matter which way you put the battery in because there isn't a spring that connects the negative terminal.
The battery gets held in there pretty good too. Mostly by the pressure created by the foil contacts and the sides of the holder.

This will be a very versitile in your electronic projects.

Enjoy!!
Great project, man. I just followed it, but for two AA batteries in a strait line, you know?<br><br>Two diferences from the one I made:<br><br>1: The tabs aren't in the sides, but where the battery's poles are. And I made little holes in them.<br><br>2: I didn't used aluminum foil but aluminum can (to put some pressure). And then... The electricity didn't flow. :|<br><br>The solution: I put the copper wire in front of it, held down by the batteries. Done. :)<br><br>I think that the solution would be using a copper foil as strong as aluminum can. :)
I think that the reason the aluminum can didn't work is that there is a coating put on the inside of the can to stop the drink corroding the can and to keep the can from contaminating the drink. You probably just need to abrade the coating off of the can. Some fine grit sandpaper ought to do.
just a few questions. this is for one battery right? if you were to make it for 2 you would just add another tick mark? the leads connect to the two tinfoil covered tabs? and the leads are the two wires that are normaly sideby side in a powercord? and you can connect the leads with just tape or something? also, do you have any ideas for a on/off switch?. thanks. by the way, great instructable ben
Yes it is for one AAA battery but you could change the dimensions for a AA. No because I reccomend you use each holder for one battery each. Yes the leads do connect to the tinfoil tabs. Yes the leads are the two wires side by side in the powercord (if it's ungrounded). And yes you can connect the leads with just tape but it won't be as good as with alligater clips (reccomended) Yes I do have some ideas for an on/off switch that I might post later. Your welcome. And thank you for reading.
thank you so much (I know I may sound like a complete moron but I have had no instruction in this feild other then electricity hurts lol)
<p>ledzep567, you cannot be a moron because you asked a question.</p><p>that means you are thinking.</p><p>Morons don't think!</p>
why do you recommend using only one battery per holder?
If you put more that one battery in each holder the likelyhood of the battteries popping out of the holder is greatly increased.
dude this is awesome! i got the exact same idea but u beat me to posting. this is a great money saver. those ones at the source are like 5 bucks -sk8erdude
<p>Opps, sorry sk8erdude, I ment to reply to DYLEGO!</p>
<p>Ah, but if you are in a desert, roasting to death, this little hack could be a life saver.</p>
a 2 AAA battery holder at radioshack is only 99cents
It costs only Rs10(about 0.2$) in India lol
And they are much nicer, too!
Ya
THANK YOU SO MUCH....this really helped for my science project
You saved me about 30 ytl(Turkish lira) THANK YOU
u turkish me too
i've always wanted to know how to do this myself! i know how you could wire one up to hold multiple batteries.
wow. need this :)
Usually when people say "this is my first instructable", it implies they rushed it and did a poor job on it. This one is very good, and useful, too! You should be proud of it!
I most certainly am proud of it and I thought other people put "first Instructable" because they were proud too (and wanted other people to be gentle with their comments as well).
Thank you for your nice comments. I appreciate them very much. If you have any constructive critisism though it is most certainly welcome.
good instructable--i understand completely except what it's for. it just holds a battery?
These are used to hold batteries for electronics projects. If you take any battery-powered device (a remote control for a TV, for instance), and disassemble it, you'll find some sort of battery holder. If you're building some project that requires a battery, you could either buy a battery holder, or make one similar to this. It's just a handy way to keep the battery in place and in contact with the leads. Hope this helps explain it!
oh, ok! =) thanks! i get it now!<br/>
Awesome idea! I shall implement this for all of my future uC projects, that is if I don't have a battery holder on hand....
This is good- I needed a containment device so I didn't have to tape my battery to the pcb xD

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