Day 4 followed the same pattern. I let the iPhone drain down to 30% charge and then charged it with the external battery. Once again the battery did very well, but after getting my phone back up to 100% charge it gave up itself. So, 4 days and 4 charges. Not bad going I’d say. The battery was certainly worth the money.
However, the power loss on my iPhone is terrible now, so it’ll probably need replacing anyway. Even so I think that the battery will come in handy in the future.
So, experiment over for now.
I am Ashley Elsdon 