good replacement - a capacity less than the original battery

The battery is good (it looks much like the original).
The announced capacity appears to be smaller than the original - I do not know whether this will have a real impact on the use (I do not think so, especially since the original was really the end of life)

UPDATE: my battery was finally defective (it happens) - an email to the seller and it was replaced immediately without any discussion (a big plus). The US commuting took a while (15 days) but I am very happy with the reaction of the seller.