Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: JUNK product -- only works with Sony included batteries

I own several AA and AAA batteries that fully comply with the specs of supposedly compatible batteries for this charger and it accepts NONE of them. It works 100% of the time with the Sony's, and 0% of the time with any other battery types I tried (AAA 200 mah, AA 1300 mah, 2000mah). I'm quite disappointed.If you're looking for a universal charger, look elsewhere.