Instruct: Classify the given review into positive or negative sentiment.
Query: Canon Camera battery wall charger

I bought this charger thinking it would work for sure because it looks exactly like the one I displaced. IT DOESN'T WORK AT ALL. My camera battery won't charge at all and the little red light insists on coming on but never turning green. Even after 24 hours of charging.I'm very disappointed with this seller.Canon CB-2LV Battery Charger for the Canon NB-4L Li-Ion Battery