New account, SleepGeek? Sure sounds like you. Either way.... Ok, you are silly. You did ask me to color you.
There were two separate issues debated earlier in this thread, and you are either deliberately conflating them to confuse people or are confused yourself. One regarded powering the AS11 from a 12v source via the Resmed DC-to-DC boost converter (as discussed in most recent question). The other was about the possible ramifications of powering directly from a 24V battery source WITHOUT a low-voltage cutoff (i.e., two 12V batteries in series, with direct cable to AS11).
Using the DC-to-DC converter, as engineered by Resmed, power is cut by the converter when input from the battery sinks below 11.4V. Directly connecting a 24V battery source does not provide any low-voltage cutoff, and the effects of lower-than-designed voltage on the AS11 input is still unknown. It may shutdown gracefully or it may malfunction. If you have tested the AS11 at lower voltage inputs as would occur when a direct connected 24V battery source is depleted, please do share your data.