Battery, Yuasa - How to tell age

Joined
Dec 12, 2004
Messages
717
Age
77
Location
Weatherford, TX
Bike
'16 Versys 650LT
I've got a Yuasa battery that I removed from my ST1300 about a year after buying my bike. I did it because at the time I was planning a trip and wanted to be sure I had a battery that wasn't on its last legs. I kept the old Yuasa as an emergency spare and kept it charged up.

Since I no longer have an ST1300, I'm thinking about maybe selling the battery but before I do, I need to know how old it is. There are number markings on the battery:

On top in white ink: Q12248

Stamped in the case in the upper back: 31101143

Are any of the above numbers date codes and if so, what date are they referring to?
 
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