Introduction: Magnetic Battery Pack

Picture of Magnetic Battery Pack

I don't know about you guys...and gals. But when creative genius strikes I am very rarely in the lab. And as for me, when I am overcome with a flash of inspiration I have to do something about it RIGHT NOW!!!
As a result I keep a lot of tools in my car. But I cant keep a ton of parts on hand so I improvise.
For this project (Hacker Hack) I will be demonstrating my super simple method of attaching batteries to a prototype.

What you will need:
A pack of small Neodymium magnets (10 for $2 at harbor freight)

Two pieces of stranded wire. (solid core works but isn't as flexible.)

A couple of batteries (whatever your project calls for)

a soldering iron


let's get started (like you haven't already figured out how this is going to work)

Step 1: Let Do the Hard Part First.

Picture of Let Do the Hard Part First.

pretty simple just solder a magnet to each lead. Make sure you use one red and one black (just makes things easier.)
WORD OF WARNING! your soldering iron is made of steel. the magnet will stick to it and freak you out while you scramble to find your pliers. just sayin.
and yes you could probably just use tape but honestly.......how lazy are you?

Step 2: Hook It Up.

Picture of Hook It Up.

next just place a magnet between your batteries (positive to negative...you know who you are.) the neodymium magnets are super strong and will hold them together. and yes they are conductive with no noticeable resistance

Step 3: Seriously That's It.. There Is No More...stop Reading

Picture of Seriously That's It.. There Is No More...stop Reading

super simple but a lifesaver when you don't have a battery pack on hand.

Comments

Barkuti (author)2015-11-30

I wouldn't solder wires to the magnets, you'll either damage the magnet with excess temperature or end up with a cold joint.
Solder the wires to thin copper sheets you can hold up to the batteries with the magnets. If on the cheap, fold aluminium foil until it is thick enough for your tastes and it will do (there are plenty of tutorials on how to solder aluminium with a standard iron and tin/lead solder).
Hope this helps. ?

holymoses (author)2015-07-23

Just made it myself and cubic magnets (5x5x5mm) are even better as you can use them more easily for voltage dividers or anything else getting the here laterally soldered cable between the single battery cells (Pic 1).

One thing is very important, to handle with care as those strong magnets can very, very easily make unwanted short circuits!

For soldering I just put them between magnetic [!] tongs (Pic 2) which also could give some quality as a heatsink during the really short to be kept time of soldering.

And also very important: the magnetic poles must be the same direction for all cables, you will see when you want to connect button cells...

:-)

DIY Hacks and How Tos (author)2015-06-20

Cool hack.

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