Watto's Junkyard
Dark Lord - Sith Apprentice Lightsaber Chassis
(works for Gen1 and Gen2)
Variant 2 - Removable 18650 battery
Details here: https://goth-3designs.com/instructions/diy-watto-dark-lord/
18650 keystone battery holder, kill switch, and compatible with all major soundboards with MultiBoards Adaptive Chassis (NB, Proffie, Prizm5.1, Igniter3, CF9).