Hello rambletamble
You echo my sentiments, and suspicions !!
I eventually got my battery from (believe it or not ) from Acer themselves.
A bit more web-trawling found their internet shop, and although not cheap " tiz the proper job "
I was pleasantly surprised, as over the last thirty years my efforts to obtain spares or accesories for personal computing items have been totally unsuccessful !!!!!!!
Regards
DA