Also found today 2 old PHILIPS accus i used long time ago.
The first one is out ot the mid 80´s.
The second of beginning 90´s.
The problem at the old one was, it owns only 7,2V.
The second one have 8,4V.
The really battery should have 9V.
So the old one always made troubles...
the memory effect killed both... :'-(