- Feb 14, 2011
Just take them out and run on AC and see...
I've taken the batteries out and they don't run with just the AC plugged in. Am I missing something really obvious?
Hum does your O² have Internal Batteries ? I got something similar only when batteries were runing low , but yours can be defective after charge / decharge cycle
Unfortunately the noise is still present. Should I bother getting new batteries?