Zerotech Dobby battery case

thingiverse

I've purchased a pre-owned Dobby drone minus a battery lately, and due to the pricey original batteries I decided to craft a battery housing for LiPo cells. In this instance I've utilized two 1200mAh Turnigy nano tech cells, which have a circular shape. Update: unfortunately these cells exhibit an enormous voltage drop under heavy load. This causes the Dobby to land after 6:30 minutes despite still having a third of the capacity remaining in the cells. The cells are getting quite hot. The 15C rating doesn't accurately apply to these cells. I will continue searching for suitable cells and post updates here. Due to the thin walls which are difficult to print upright, I designed a kit that must be assembled after printing. I've employed super glue. The most challenging part has been the connector. The last picture depicts a making of process. I've used the contacts from a 2.54mm female header connector, removed them, straightened them, stacked and soldered them, filed down the inner ones to 1.75mm (from 2mm), soldered the cables, placed them into the case, and glued the cap on.