It is an offshoot of the problems with other (not notcigs) pv earlier in the year.
The powerizers do great in a buzz pro, excellent performers, but that
device has really good pv-level protections. They should not be used in a generic, less well designed,
device. Removing them from sale is a proactive step, so users won't have the chance to accidentally put then in pv they shouldn't be used in.
I'm totally comfortable with them in my buzz pro, best real mAh in a 16340 right now, but the black trustfires also test really well.