Varta Battery Age

[the_ace1982]

Hi folks i'm trying to get to the bottom of an intermittent electrical issue i'm having, does anyone know a way to tell the age of this battery? It loses charge quite quickly but according to my battery tester it is "normal"
View attachment IMG_2906.jpeg

 

[spartacus 68]

Take a closer look at the negative terminal, sometimes year of manufacture stamped there.

 

[the_ace1982]

I worked it out, there are different variations of codes on them. Mine was on the front of the battery, I looked up the table online for my particular type of code and it turned out to be the original battery! 2 hours to find out the age of it! Its done well to last 11 years