YES! The ESC comes in the package with a low ESR electrolytic capacitor that needs to be mounted close to the ESC LiPo pads and the capacitor wires need to be as short as possible. Ideally, you want the capacitor soldered on the LiPo pads after the main power wires are soldered. If space is a problem and the capacitor needs to be mounted farther away then extending capacitor wires to the ESC LiPo pads is acceptable if using short(max 20-30mm long), thicker silicon wires. Mounting the capacitor on the XT60 is not recommended because the effectiveness drops.

Yes, the default Voltara FW can receive Dshot signals ranging from Dshot150 up to Dshot2400 so any FlightController providing Dshot signals is compatible.

If you need BiDirectional Dshot to use the RPM filter on BETAFLIGHT, you need to flash the VOLTARA bidir FW. You can find the documentation on how to do it on our website.

To update the ESC firmware, you need to use VOLTARA GUI: gui.voltararc.com through BETAFLIGHT or KISS ULTRA FC GUI. There are detailed how-to on our website.

YES, Voltara 70A ESC can be powered from 3s to 8s (33.6v).