Tools and parts used
- A dead 9v battery
- Needle nose pliers
- Soldering iron
- Electronic solder flux
- Electronic solder
- Hot glue gun and glue stick
There is a crimped seam that runs the length of the 9v battery case. Using a pair of needle nose pliers, carefully open the 9v battery case starting at the bottom of the case at the seam. It takes a little practice, patience, and hand strength to complete the operation. Be sure not to damage the cells inside.
|9v Battery Case Opened At Seam|
Complete remove the cover once the case seam has been opened the full length of the battery. The top of the battery is soldered / welded to two leads. Break the welds by gently pulling the top away from the battery. The bottom falls away from the battery on its own. Keep the top and bottom. They will be used to make the battery clip. Properly recycle the remaining battery cells and case.
|9v battery top and bottom removed from recycled 9v battery|
We apply a thin coat of flux to the battery top inside metal. The flux cleans the metal and helps the solder to flow and form good solder joints. The red lead goes to the positive contact. The black lead goes to the negative contact. Carefully solder the leads assuring good quality solder joints.
|Red and black leads soldered to inside of 9v battery top|
The final step is to seal the battery clip using hot-glue and the 9v battery bottom. Once the glue is dry, use a sharp knife to carefully trim the excess glue.
|Flimsy $2.69 Commercial 9v Clip on Left versus $0.00 cost home-brew 9v Clip on Right|
- This is a fun and easy project.
- This project can save you money (savings $2.69/clip).
- This project would make an excellent group activity such as a boy scout troop electronic night.
- Great way to make a 9v clip if ever in a tight spot (ala McGiver or repairing equipment during a disaster or emergency).
- The quality of the end result is superior in several ways to the commercial off the shelf 9v clip.
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