Star Trek wand company phaser 1, how to safely open it up and replace the battery.

There's a lot of us who own the incredible wand company phaser 2. But the problem comes with the phaser one, what happens when the battery dies. In this video it's a really rudimentary way of opening it up kind of Neanderthal but it gets the job done. To razor blades in a screwdriver between the posts. Take your time don't be in a hurry and make sure you don't spring it open real fast because you'll lose parts. Hope this helps.