Instructables
Picture of how to make a 9 volt connector
here i'll show you how to make 9 volt battery clips out of old nine volt batterys.
 
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Step 1: Gathering the supplies and tools

Picture of Gathering the supplies and tools
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Ok you will need

- a dead 9 volt battery (I have never used anything but energizer 9 volts so please use caution when using other brands)
- 2 6" pieces of wire
- a soldering iron
- solder
- soldering flux
- 60 grit sand paper
- hot glue
- acid brush
- pliers

Lets get started!

Step 2: Taking apart the battery

Picture of Taking apart the battery
Start by taking apart the 9 volt battery do this by gently pinching the very top edges of the battery casing with the pliers until its close enough to the edge of the top connector plate so the metal can be carefully bent away. Once done remove the plate with the connector and discard of the battery. The edges of the battery case are sharp so be careful.

Step 3: Assembly

Now, strip and tin one end of each wire so it will make a better connection.

Next, take the connecting plate from the battery and sand the back until the connection have a gold ring going around them

Finally,  take the acid brush and apply a good amount of flux  to the contacts and them add solder until the hole in the center is covered it shouldn't  take that much. now solder the tinned ends of the wire to the contact pads on the back. Once you have done that you will have finished the 9 volt battery clip.

Step 4: Optional extra

Picture of Optional extra
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Now to add a little extra support to the wires take and cover the back with hot glue to cover the wire. Another way would be to take electrical tape and cover the connections but this will add very little support and will have to be replaced after a little while of use.
shdittman9 months ago

BEWARE!!!!!!! I was trying to fix a child's toy using this Instructable and after peeling the cover off the battery it ruptured and shot out a small post. This could have easily blinded me in one eye or my husband. The projectile landed in the next room and the battery made a loud popping sound. I will never do this again and I do not recommend anyone do this. Go to Radio Shack and buy a connector. Sorry if this was not a "nice" comment.

zelda81596 (author)  shdittman9 months ago
I'm very sorry for your bad experience. I have personally done this many times and have never punctured any of the cells on the inside of the 9 volt battery. I'm still not quite sure how that was done as the only side that has to be peeled away from the connector is the very top (This is specified in step 2). This was originally posted as a way for people to recycle their discharged 9 volt battery into something that can be used for a number of different projects. Again I'm very sorry for your experience and I hope it won't keep you from trying other projects like this one.

I only peeled off enough of the top to slip out the connectors, BUT, it wasn't a dead battery. I am disabled so I don't get to the store easily. I knew using a new battery was not cost effective, but I was curious to see if this worked. Perhaps an emphasis in the instructions that it is important that one only use a dead battery would be important. I wondered, as I was peeling, if there was anything dangerous about what I was doing. Can't say I am very experienced with batteries or electronics. Thankfully the mini-explosion was delayed and the battery was lying on the table as it popped. No damage done, but other novices might also try this tutorial and be injured--I might not be the only stupid person out there to do this on a new battery!!

chipper353 years ago
I've been wanting something like this! Very simple.....very usefule! Thanks.......REALLY!!!!
FrozenIce3 years ago
very useful!! i cant believe i just realized that its the exsact same thing just flipped... lol haha thx 4 sharing :D 5*
tocsik4 years ago
I don't know why this idea never occurred to me before. thanks.