The Sony packs contained protection devices to lessen the chance of a hazardous situation occurring with the lithium battery - something about due dilligence. Sony has a huge corporate presence in the US. Product liability suits against Korean or Chinese companies that have no significant presence here are probably a study in futility, a suit against an importer might be another story.
-- Red S. Red's R/C Battery Clinic
formatting link
us out for "revolting" information.A couple of years ago I bought the Lithium ION battery and charger from
> Batteries America. I meant to use it in my GWS pico stick but it just
> didn't give it enough RPM for the aditional weight. Well at the same time I
> also bought two of the 1200 LION cells to make another pack. Well today I
> sat down and put the cells together and charged it up. And for some reason
> the cells made the motor turn at a much higher RPM than the pack that came
> with the charger. I hooked up both packs to my twin EDF-50's to see how'd
> they perform. The pack from B.A. would cut out at about 3 amps. The new
> pack I made was able to power the fans all the way up to 5.2amps. So I had
> to figure out what was different between the two packs. I tore off the
> shrink wrap from the pack from B.A and found this circuit board with surface
> mount chip, resisters, and such on it. What the heck is that? Is it a
> voltage regulator? Is it a cut off circuit? Is a charging circuit? Any > ideas.
>
> The cells are different as well, the ones from B.A. are sony cells, the
> individual cells I bought say LG Chem on them.
>
> You can see a photo of the pack at
>formatting linkUnfortunatlely they don't show
> or mention the circuit board.
>
> --
> Normen Strobel
> snipped-for-privacy@zoominternet.nospam.net
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