As a replacement battery just great. I see no difference between the original battery. Work must the battery in my Fujifim X-S1.Auch use or hollow out when there are no problems (no jamming). What I think is great when the charger when the battery is full, it switches to trickle charge which is not the case with the original charger. The second advantage is the Patona charger invites with 350mAh battery is barely warm invite the contrary of the original with 650 mAh and the battery is more than warm. Although less mAh is, the charging process takes a little longer before davür the battery. For battery life I can not say anything yet. Conclusion: for little money obtained a large package what more could you want
