Replacement Minolta battery advice

I have a Minolta External Battery Pack Holder BH-100 that holds a couple of Minolta NP-100 lithium ion batteries .
It can be used with the Minolta DiMage series of bridge cameras rather than using the four AA batteries in them .

There due for renewal but I'm struggling to find some .
I think the original ones were made by Sony and were used by several camera manufacturers but sold as different designations .
Same as the NP-400 was also used in Pentax and Samsung DSLRs ( the Pentax K10d and 20d , and Samsung rebadged ones the GX10 and 20 )

So does anyone know what else these batteries were known as ?

Here's a couple of pictures of them to jog your memories .

Do you know if the batteries are used for the end cap terminal? They look about the same size as sony np fm500h. Which has pin hole terminals on the end cap but could possibly still be adapted.

The contact points are on the back of the battery next to the + & - marks , not in holes at the end of the battery .
It's possible the battery holder could be modified , but far easier if the correct batteries can be obtained .