They do their job in my Fernbedinungen, wireless weather station, etc.
certainly they are not suitable for a photo flash is to recharge very quickly. Even when TouchPad Apple they do not last too long if, but there are batteries with more power ....
Conclusion: There are and will remain simple batteries for small things like Fernbedinung etc.
Until now was no dead battery in the pack, but it should be so, you can get over that at 20 :)
More at the price, please do not expect :)