By 2700 mAh I have blinded me at first. I thought that such a high capacity just for digital devices should be good, because I can then use longer. Unfortunately this is only very limited. The batteries have a high self-discharge so that they are as good as no longer usable after just one week. I bought 4 packs, each containing 4 batteries and all, these shortcomings. All batteries must be recharged immediately before use, so you can use them at all. This is unacceptable for me.
I advise any batteries with a lower capacity, but also to buy at a much lower self-discharge (such as Samsung's Eneloop).