In article ,
"George" wrote:

I have a Lithium-Ion 7.2V battery for a SONY camcorder, that although brand
new and fully charged, it does not show any voltage at the output teminals.
I suspect that this is the work of some kind of internal protection circuit
to prevent accidental shorting of the output terminals. Does anyone know
how I could activate the circuit to be able to use the battery without
plugging it in the camcorder?
Thanks,
GT



I once saw a design where a magnet was used to activate a relay in the
battery pack. This would in turn supply power to the terminals. These
would keep children from shorting out the terminals in order to make a
little (or big) firecracker out of the battery pack.

Al