The Radio Information Board

Thanks to jeff here's the answer,
the date codes for knb-33l are as follows:first letter is the year,(k=2006,l=2007,m=2008,n=2009,o=2010,etc.) the next two numbers are the week of that year.

bump

we use KNB-33L li-ion on our tk-3180
how do you decode {read} the battery dates? stamped on back of battery's

i have:
J09A
J33A
K14A
K27A
L43A
N16D

also any body using KNB43L Lithium Polymer 7.5v 3300mah Battery for Kenwood TK2180, TK3180, TK5210, TK5310
how are they working out for you?
thanks bob