Japanese car battery date codes?

tmenz, Apr 10, 10:38pm
x1
I have a Pitworks battery that was fitted to my car when it was in Japan.
It has the date code 7KK22 stamped into the top.
Can anyone definitively decipher this!
I suspect the 7 refers to 1997 and the K refers to November but I don't know about the K22 after that!

jason18, Apr 10, 11:57pm
5 years old! more like 15 years.

carmedic, Apr 11, 12:00am
Once you decipher it you might be able to make a warranty claim!

tonyrockyhorror, Apr 11, 12:01am
I think the last 3 digits indicate the plant where it was made.

tmenz, Apr 11, 12:27am
Yep, and it's only just dying, they don't make them like that over here!

807, Apr 11, 5:27am
Jap. batteries .amazing long life, I've found .

dent, Apr 11, 7:08am
what year is the vehicle!

tonyrockyhorror, Apr 11, 8:33am
The Hella Endurant I replaced 4 years ago in my car was 10 years old.

tmenz, Apr 11, 8:39am
1992