Attaching Battery Module 13.2 to Core2

[waitz]

Has anyone found an elegant way of attaching the red 1500 mAh Battery Module 13.2 to the core2?

The original battery has to come loose from the brackets on the core’s back plate, so the original battery is dangling loose in the space below the Battery Module 13.2, and the bracket itself is in the way when trying to attach the back plate to the battery pack…