so I bought the same battery pack that comes with my camera, same brand, same model (Canon NB-6L). It lasts çi baucoup less time (almost 3 times less) than the camera! I am very disappointed because I expected much the same! Strangely more, the Canon autocaollant entourrant the battery seems tight and comes off badly. Even if I bought the camera and the battery at the same time on Amazon, the two battery manufacturing dates are very remote (the AFN is newer than 9 months compared one purchased separately).