John Rumm wrote:

Not sure if it would be a problem with the charger - since its the tool
that has an extra tab in the battery slot that prevents the insertion of
the new batteries. The new charger won't have the tab either.

I've not seen photos of the "non-star" batteries, but here's how to
adapt tools to let them fit ...

https://youtu.be/SaJ13fUkNV0?t=72