Tom Seim wrote:
..

I don't hate sealed lead-acid batteries. They are inexpensive, don't
need a special charger, their capacity is sufficient for the use we
have. A local plus is that there is a little factory nearby making
them and we can bring the old ones to them for direct recycling.

Clearly you haven't installed a transponder (yet).


No, I didn't, no am I going to, since I am only flying club
gliders and so it is not under my responsability to do that,
But it is highly probable that in a near future we must do
that for most club gliders in France, and in this case I think
a second battery will be installed just for the transponder.