The battery I received was very scuffed and obviously not new. Put it in phone and was completely dead, worse it would not charge at all. The seller did give a very prompt refund but it was a complete waste of time, in the end bought a new cheap phone. Seems to me some sellers are just flogging batteries from recycled phones under the pretense they are new. Beware if they are not in original manufacturers packaging!
If you have a good phone pay for a genuine OEM battery; if you have a cheap phone just buy a new one for <£20, they're getting better all the time.