I'm really pleased with the batteries. After 8 days you have arrived today. As the batteries from England custom of delivering to Germany a bit but it was worth the wait. The batteries are recognized directly and are also half charged. I can not say anything about the durability, but I suspect that they are adhered to for as long as the overpriced original Canon. I have the feeling that they are not as stuck as the original but if the battery cover is to play the eh no role. But I rather think that I my imagining. Am satisfied with 2500mAh can make even longer than photos with 1100mAh. Anyway, I would say that you need on the go 2 batteries depending on whether a power source is needed. When you're out every day and takes pictures, is I believe rather the memory card is full instead that the batteries are empty. I must also first time trying even if that also applies.