Yeah, that. I think with these unknown Chinese sticks it would be highly advisable NOT to install the PTC strips - on reflecting a bit. The original Panasonic/Primeearth sticks were not prone to leak, but the Chinese sticks certainly are and they can cause BCM and other damage when they do. Leaving off the PTC strips, protects the BCM from danger. There is not much he can do about the leak problem anyway. So, install the resistor and see if the thing works.I didn't say they're powered. Your suggesting that I did exposes your ignorance on the matter. There have been a decent number of cases - many more cases than PTC overheat - where the PTC strips across the cells have shorted the cells.