Two options to meet your changing needs:
A lightweight and portable life-support ventilator that provides both invasive and non-invasive options.
Offers the same functionality as Astral 100 as well as a double-limb circuit and Fi02 monitoring.
Source: A maximum of two external batteries have the capacity to deliver up to 16 hours of continuous, portable power when connected to Astral. An internal battery provides up to 8 hours of extra backup power if needed.