Frequently Asked Questions (FAQs) FAQs for Product: Remstar PR1 Auto & System One Humidifier 1. Is there a battery unit available as an accessory for the Remstar PR1 Auto? (Posted: 3rd Dec, 2009) Question & Answers for Product: Remstar PR1 Auto & System One Humidifier Q. Is there a battery unit available as an accessory for the Remstar PR1 Auto? (Posted: 3rd Dec, 2009) A. The Portable Battery pack, from Respironics, will power the PR1 machines. Back to Top Submit A New Question Can't Find The Answer You're Looking For? Submit Your Question Below: Related Product:  Remstar PR1 Auto & System One Humidifier Your Question:  (Please enter One Question Only! You can ask as many questions as you like, but do not combine them into one post!) Your Reply Email Address:  Security Step:  Enter the text to the Left in the space below: [ CLOSE WINDOW ]