I manufactured a 3D-printed battery cover for the DOD. The color is black, and the material is PETG (polyethylene terephthalate). The cover's precision is quite tight, so if it's difficult to fit, please use sandpaper or similar to shave off any interfering parts. For the first installation, you can install it smoothly by following the steps below: ・Loosen the four screws securing the back cover evenly, so that the bottom plate can be moved by hand. ・Attach the battery cover, and then tighten the four screws securing the back cover. *In used, repaired, or modified items, the internal battery box may be installed upside down. In this case, even the original cover cannot be installed. Please refer to the fifth photo and return it to the correct position for use. If you need a larger quantity, please consult with me in a separate comment. Shipping will be in a zip-lock bag via non-standard mail.