Needed to purchase a second P2 Battery since the first was not longer than 4 hours and thought that it might cut things too short for 4 hours...so, I purchased a second...a bit pricey I thought...but works well so far!!
Would be wonderful if the P2 could manufacture a Continuous Flow Portable!! Many people have expressed the same in that they prefer the Continuous Flow.
I will be the first on the list if P2 offers a portable Continuous Flow.