Sure it's a good build, but is this really a DIY? The images are screenshots from a video that showcases their lithium battery products and business. OP's name is obviously their business, which you can look up with a quick search.

Looks like MDF/particle board. You can certainly try filling it back with wood glue and sawdust, or some type of wood epoxy. The problem is those screws will most likely strip out again. I recommend putting in threaded inserts with your adhesive of choice.

This is a pretty good video for your exact situation: https://youtu.be/QWNE3KN9Icw