I’ve noticed the positive terminal on a 26650 has been dented inward by a cyclone c88, sanyo 18650 positive terminal dented by a convoy m1 and AAs negative terminal denting by a Dorcy flashlight.
I unscrew the cap form the cyclone when its not in use because i now have to use foil to charge the 26650 to make contact with the charger, the 18650s fortunately are a laptop pull so if they become unusable its no huge loss
Anyone else noticed this, is it worse on some of your lights then others?
I have some dented ones too, I don’t care for it because it doesn’t harms the cell…
Also this is a good indication that the battery sits tight in the light and makes good contact.
I also have a pair protected panasonics which have dented negative sides.
ive seen this with the protected ncrb fastech cells… the negative end develops a little dimple on the pcb since the cells are a little longer than usual
doesnt matter as they still work fine and so does the protection circuit.
I have a Panasonic 3400 unprotected flattop positive terminal dented by a Convoy C8 or Convoy S2. It’s pushed in so far that it can’t be charged by my Nitcore I2 or Xtar WP2. Luckily my Miller 102’s nipple is small enough to make contact with it.