So annoying when your remote controller loose the battery cover by the broken clip - glue doesn't work because of small surface area :-(

You don't have to replace the whole battery hatch but just repair the clip and keep the original look & feel.

Remove remains of original clip and sand down the smooth surface. Print the new clip with sufficient size bonding area. Glue with the cyanoacrylate glue

(the example here is for VU+ Duo2 rc)

Ps, When printing this kind of parts, figure out the direction of the printing layers. Avoid the prints where the bending happens through the layers