Pokemon GO Gotcha Case replacement

The battery of my Pokemon Go Gotcha device was dead. The case broke as I opened it. Because the original battery has a very low capacity, I designed a new case to use it with a AAA-sized battery.
I use a 3,7V ICR10440 battery with 350 mAh.

The Display and electronic is used from the original device. It needs some pressure from behind, to reacts of pressing the button. So I added some hot glue to fix it.

The battery contacts i got from an old electronic device with AAA batteries.

The display cover should prevent from pressing the button while carrying inside my pocket.

The file for the display cover is without the trainer name shown in the picture.