Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Battery for my daughter's multimedia player

Bought my daughter the Pyrus (Sigo) 8gb multimedia player and it uses these batteries. So far it holds a charge well (allows her to watch a movie continuously for a couple hours) and was only a couple dollars. I have extra batteries plus the two the player came with. Now I'm ready for long drives, plane rides and camping trips without having to worry about plugging the converter into my truck to charge her multimedia player.