This is exactly the size/MaH relationship i was looking for.
The product is sold out, try here
http://www.ebay.co.uk/itm/P205-2430...411&pid=100011&prg=1005&rk=2&sd=200645681069&
In this size, realistic number is 1700-1800 mAh...even with Li-Pol. Still, I'll give U extra hour maybe. I think, all these golden batteries are fake...