FYI..
As far as I am aware, there are very few interchangeable parts between FGA's.
Most manufacturers have specific parts for their models.
There's a reason for this - they want to own you as long as you use their equipment.
I'm sure if they could supply their own batteries for each model they would also.
Hope this helps
Thanks OZ, someone with a helpful comment on the content at last.
Happy New Year to you and yours.