Button cell battery pack for experiments or small applications.

 Hey everyone! Lets learn how to make a battery pack! Really simple, easy, and cheap. These are great for experiments and tests, or small applications that require 3.0 - 4.5 volts.

(I'm sorry if someone else has posted this before me, by all means post a link to yours in the comments.)

Step 1: What you'll need.

Alright, you'll need:

Electrical tape.

Wire. (Optional)

Two or three button cell batteries. (The thick 1.5v ones.)

Scissors. (Sorry, forgot them in the picture)

Comments

[GrotBox]

An even better choice may be to use "self amalgamating tape". This is a sort of rubber like tape that is a little stretchy and sticks really well to itself. It is used for sealing electrical connections that will be subject to rain etc. This would be even better than electrical tape because it is stretchy, so if you stretch it when you apply it, it will be trying to contract when you have finished and will therefore ensure all cells and the wires are in really good electrical contact.

[Zem]

Cool! Thanks for the idea!

[mothflavour2]

You know, this is so simple, and something that you think everyone already does, yet I actually haven't made anything like this.  This idea is just so handy.  Rather than messing around with knobs or buttons on a bench power supply, just keep a couple different ones of these in the drawer.

[temp]

I have come to realize that a lot of instructables are just common sense, but tis like woah, why didnt i think of that.

[Zem]

Yup very much so. 

[Zem]

I know! I thought every one did this XD
They are VERY useful, especially like you said, not having to mess with a power supply.
Thanks for the comment!