Second Anchor Battery

I've now for the second time a replacement battery from an anchor for my Note3 bought.
The first performance was but somehow significantly better than this.
The first time the power to read after about 6 months. (Was the original also approximately so)
Unfortunately, I could barely notice a difference to the older two in the new.
I had the hope that the improved. After several weeks this is unfortunately not the case.
Thus I appear at the second probably more likely to have had a bit of bad luck.