At various dealers are available battery clips for contacting 9-V block batteries.
These batteries also carry the designations 6LR61, AM-6, 6F22 or PP3.
They have contacts that looks like snap buttons with different sizes.
These batteries have only a small capacity.
Therefore, the connection wires of the clips are only designed for a small current and are quite thin.
For electric consumers taking in a higher current, they seem unsuitable.
The thin wires produce a relatively high voltage drop.
However, I wanted to use a battery holder that only has contacts like on a battery clip.
Since the intended electric consumer, here a transceiver, draws a lot of current, another solution had to come from.
When one open one of the available clips, two contacts appear on a thin supporter.
First remove the thin wires from the contacts.
Then you solder new thicker wires on it.
At the end, you isolate the supporter with the soldered wires.
I used self-amalgamating insulation tape for this.
It is enough to cover the soldering points and fix the wires.