This is a 550mah Battery Clip for the BetaFPV Meteor65 Pro that usually uses the smaller 300mah batteries.

Flexible! Designed to print in vase mode and in PLA.

Very light - .6g by filament calculator in the slicer, I threw five of them on a scale and it didn't move.

Drone flies better than you would expect having stapled 6g extra in batteries on, and hovers around 50%.