Or the positive end, too.

C8Fv2 I just got, charged most of the way just fine in the supplied charger. Wanted to try it in the Cometa to see if a high-drain 2x700 would improve the brightness any. Umm, it kinda smooshed in the positive “cap” a little. Wouldn’t make contact with the charger anymore when I wanted to finish it off the rest of the way.

And too much pressure pushes in on the driver board (spring or not, it’s ultimately pushing on fiberglass). Last thing I want is for it to crack the pcb on the driver.