TX16s Case Li-Ion Holder

Hello everyone! (ツ)╯

I designed a Li-Ion holder for the Radiomaster TX16s case (Fig. (A, 4)).
It is for carring four Li-Ion 3,7V batteries (Fig. (B, 1), (C, 1)). It is specifically designed to use with protective casing for the radiocontroller, so it fits in the bottom left corner, were it is embedded (Fig. (A)).
For removing it is recommended to attach a piece of string (Fig. (E, 4)).
I like to place the batteries with opposite polarity into the holder, to mark its level. For which I added some symbols (Fig. (C)).

Printing:
The holder can printed without any support. It is recommended though to print the bottom holder with a 45 DEG angle, as illustrated in Fig. (F), (G).