Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Highly defective, practically useless.

I bought this battery for my Fujifilm camera, which worked fine with my Fijifilm battery. Once I started using this battery, the camera stopped functioning properly. It would take multiple tries to actually turn the camera on - the camera would turn on and immediate shut off, and the screen would slowly fade into black, as if the camera is dying. The most annoying thing is, every time it shuts off, the date and time of the camera would reset, requiring me to fill in the date and time again and again so the photos taken would have the correct date and time. This is extremely annoying, if I were to upload the photos without the correct date and time, the order of the photos would be all messed up.Do not buy this battery. It's cheap but definitely not worth the trouble.