Documentation Documents on this page are in English. If you would like resources in a different language, please click here. Astral external battery user guide Keep exploring When to replace my CPAP equipment? Replacing the equipment for your ResMed CPAP, APAP or Bilevel solution is easy and helps ensure effective sleep apnoea therapy. Explore Where to find ResMed sleep clinics in the UK? Need to meet us? Find our different localisation in UK. Explore Track your CPAP therapy with myAir Track your sleep therapy progress from the palm of your hand with the myAir online support programme. It’s included with any ResMed Air10 device. Explore Related products Astral mobility bags Designed to allow mobile use of the Astral ventilator Read more Homecare stand A portable, space-saving solution for the hospital or home that protects against everyday hazards with added mobility and convenience Read more Circuit support arm Holds ventilation circuits and mouthpieces securely in a convenient position for patients using an Astral ventilator Read more