With virtually no capacity

As usual, the battery has been delivered quickly and has fitted perfectly for the iPhone 4s.
Unfortunately, the surprise came afterwards when testing the battery.
Even after a long charging time, the level indicator of the phone did not rise beyond 3%. The display of iBackupBot gave me a capacity of 100! mAh from. So practically completely over, then what also affected the maturities.
So returning.
Nevertheless, I'll try again, perhaps I catch then a usable battery. It is obviously mass-produced goods, which will be sent out unchecked. This is a gamble for the customer. I suspect that the only reason can be offered correspondingly low. Selected batteries are likely to rise significantly in price.