All chargers are not the same, even within the same brand family. I have ReSound Preza aids and Jabra pro aids, and while the chargers look visually identical they don’t work with both aids. Jabra to Jabra and Preza to ReSound only.
I also have Philips Hearlink 9030 aids, and the shape of the aids are so different and smaller that the ReSound or Jabra aids would not fit in the Philips charger.
All of my aids are inductive charging.