Q X7S battery lid

This is a battery modification for a Taranis Q X7S that replaces the Nimh 2000mah battery pack with 2: LG 3500mah LI-Ion batteries (note: LG has some of the only "real" >2000mah Li-Ion batteries). I used a charger board and a 5.5x2.1mm panel mount charger plug.
Update: the original STL back plate has been updated for a better fit.

Search string for charger board: Intelligent Balance Charging Protection Board 2S Packs 18650 lithium Satellite

Search string for panel mount: 5.5mm x 2.1mm DC Power Jack Socket Female Panel Mount Connector plug

I printed it in ABS with supports due to the really small tabs that catch and hold the plate. The panel mount plug was 10.9mm, but due to the threads I made the hole for it 11.2mm which is still a tight fit but can still be screwed into the hole.

A new STL file has been uploaded (*_v2.stl) that adds a 6.8mm hole for a short clear acrylic rod to be inserted in to act as a light pipe and show the state of the charger board LED's. You will want to order a 1/4" (around 6.67mm) acrylic rod, and cut a short length off (around 6mm in length). Polish the 2 cut ends with fine grit sandpaper and insert it into the hole.

Note: you will want to print this with high density infill to make sure the tabs have enough strength (I used 50% infill).