Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very disappointed

I bought this to replace the OEM battery (Fuji-branded NP-80) in a Fuji digital camera. This battery apparently is not a replacement for that battery as it will not charge at all. It looks exactly the same, but even after several hours on the charger, it won't even power up the camera (the camera does work, using the OEM battery, just not for very long).