Using Second battery to Charge Tanks

[Racer26]

...The ROBOTs are required to have the regulators, and the relief valve regardless of whether the compressor is on or off-board. They're also required to have a High-side gauge. I'm failing to see how the method of getting the pressure there matters. Have the team pressurize the system during inspection using their method of choice, see that the system they're using shuts off when the robot reaches ~120psi (as they already do now) and voila.

Realistically, theres only 3 compressors on the market (at least, widely known to the FRC community), that are legal anyway. Its easy enough to check if the compressor being used is one of those 3 (The old Thomas KOP unit, The Viair 92C (new KOP) and Viair 90C.

Frankly, if the compressor is not physically on the robot, I don't see why it matters what compressor you use. A higher flow rate compressor means it fills faster, but if you're not generating the compressed air during the MATCH, who cares, its not giving you any advantage because you have a finite amount of air storage on the ROBOT.