Dual Li-ion battery holder

I design this dual Li-ion battery holder to my electronic projects.

Is use this contacts: https://www.banggood.com/10-Pairs-Silver-Tone-Metal-Battery-Spring-Plate-Set-for-AA-AAA-Batteries-p-1046111.html

I used Cyanoacrylate fast-acting adhesive to to glue the electrical contacts.