I am looking for "6x AA Battery Pack holder" which is narrow and long (for test equipment). It holds 6 AA batteries in series length wise like this:
+-
| |
| |
| |
and has 9V snap type connector on the end. It has 3[length]*2[width]*1[width] relative size compared to AA.
Forces on plastic tend to snap the ends off.
I found this piece for Korg, but at high price.
6x-AA-Battery-Pack-holder-for-Korg-RK-100Searches for battery holders produce variants with more square form factor.
EDIT: part was found with help from OP.