YXQ 100Pairs AA Battery Spring Plate Set Contact Positive Negative Conversion Silver Tone

Not all springs / plates are created equally. I've had a fair amount that were not magnetic. Does that matter for most things? I doubt it. But with a particular project, I was having a hard time soldering wires to Neodymium magnets. The Iron would slap into the magnet and not let go while the solder cured.So, the next best thing was these. I had them for anther project and realized the magnets stuck to them. The magnets are coated in Nickle. The power flowed from the Spring plates, "through" the magnets, and back and onto the rest of the circuit.

I am happy with them. They do exactly what I needed them to.

Nice product, fitment is good quality is good. I have been using these in my 3D printing projects.