If you haven’t seen it, Cris posted the following on the Quasar thread back on Nov 7, 2022:
“ The Quasar is designed for a single 2S Lipo battery, it does not have a separate battery input for deployments. Due to the dual-switched architecture (like the Quantum and Proton) it really doesn't need it. BOTH sides of your outputs are isolated from the battery, there is no direct "common" connection between your ematches and the battery like there are with "other" altimeters. Essentially, there is a WiFi Switch on the deployment power, and it's not turned on until you arm the Quasar AND a launch has been detected AND the first output event occurs. If you really want to add a mechanical switch, you can put it on the battery, once you turn on power the Quasar starts transmitting GPS coordinates almost immediately (unlike the TRS, which required that you were armed for flight before it sent out GPS data). This has in-flight recovery implications too... if your battery connection comes loose and the Quasar resets, it will still send out your GPS location data.”