How to know the release date of the Samsung battery?

AB803446BU battery from the mobile phone Samsung Xcover GT-2710, serial number S/N: TH1B615ES/4-B.
How can I find out a release date?
Bought on Aliexpress instead of the expected 3-5 days, keep only 1 day - not much more than the old battery, which is enough for the day (morning to evening). New phone battery lived 3-5 days in the same mode.
After a couple of days the deadline for buyer protection. I think open a dispute. If it is old, then make a release date.
August 19th 19 at 23:18
1 answer
August 19th 19 at 23:20
4th characters of the serial number - year: B=2011, C = 2012, D = 2013, F = 2014, G = 2015, H = 2016, J = 2017, etc.
5th symbol — 1..9 — January ... September, A — October, B — November C — December
6 and 7 symbols — the day of the month.

Out production date: 15.06.2011

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