sort of an OT aside on this thread...
We bought about a dozen "j*rk-off" flashlights for our shooting crews for the 4th. Y'know... those things you shake a magnet through a coil to re-charge?
We'd bought a handful last year, and they worked fine. So this year we bought a case of the same model, same manufacturer. They were identical down to the parting lines in the plastic mouldings.
Except...
I lazily glanced at one against the sun to see the components inside the translucent case. Hmmmm.... I can't see any diodes on the board. Hmmm.... I can see LIGHT coming through the coil that should have 10K-12K turns on it. Hmmmm.... No cap on the board, either. Hmmmm......
I took the damn thing apart. The "coil" had about 100 turns of fine wire on it. Just enough to "color it copper". The board was bare. There were two corroded and lumpy (reject?) little lithium cells in there powering the LED. The coil leads terminated into air under a piece of Scotch tape. The "magnet" was a lump of pot metal, crudely snipped off with clippers.
"Round eye not notice! Light work for intermittent duty for a few months, it stop, he say 'Oh... must be broke... buy more.'"
Same price, same company, universal rip-off of every customer who'd come back for more of the original product.
LLoyd