Bill Daniels wrote:
I'm not suggesting lash-ups. A discrete 'brick' or 'slab' battery pack with
matched charger is what I am talking about.

Well, that is what you would do, but you are more careful than most...

I've read the warnings from the model airplane sites. The warnings seem to
all be about charging. I never charge a battery in the glider.

Look more carefully, there are also warnings about explosions resulting
from short circuits. I've seen a similar video where they just shorted
the terminals together, and let the cell sit for a minute or two...

Marc