Now you can fly without fear of damaging the battery.
I think this design is lighter than similar parts, but difficulty in printing, after printinting this parts
you must use glue or solvent weld for you plastic.
Also i include full model (from 2 pars), but it needs mutch more support.
SBS Plastic. 230 extruder, 70 bed, 100% infill
Use sand paper to prepare surface, And using solvent for bonding parts, and to give a smooth and glossy surface