have this battery for about a week, he was immediately recognized by my Panasonic SD99 and the info chip shows all time an.die appears with 3:33 hours, I think hervorragend.ich have the battery charged by a separate charger which of course at the size dauert.dann something I left in the camera and then loaded much faster what ging.alles in particular for this excellent price also what the performance of the battery betrifft.eine long-term study, I can not present, but I have another spare battery at half power for 6 months and is still very good.