Designed for the 7 Chambers Acolyte lightsaber hilt, this chassis is a dream to install.
The chassis is completely removable and utilizes integral switches. It accepts an 18560 battery, a 24mm bass speaker, a Switchcraft 2.1mm recharge port and two 6 x 6 x 5mm tactile switches.
Note that although the hilt accepts one inch blades, the chassis takes a 7/8 inch neopixel blade connector.
Full installation instructions can be found
here.