Hi Melissa,
I responded to your question on the adult thread, the Pari trek is fine to use with any medication either with the battery or plugged in. I asked my doctor about it before getting one. It is just like a regular nebulizer, only much more compact. Tubing attaches compressor to neb cup and the medication is nebulized over 15-20 minutes, depending on volume. I find it does take a little longer to do the meds with the Pari than with my large compressor. I personally don't have the battery with mine, but it looks like you just attach the nebulizer to the battery if you are not going to use a plug. It does come with very thorough instructions and the person who delivered mine from the home care company went over everything with me when it was delivered. Hope this helps!
Kim
40 w/cf