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Kenwood TK-x80/x90 Battery date codes (KNB-16A/17A/52N)

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wireless_friendly

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Battery Age web site have this information about Kenwood LMR batteries:
All batteries are stamped with a 4 digit date code. The first 2 digits are the month the battery was manufactured, and the last 2 digits are the year. So a battery with a date code of 0801 would have been manufactured in August of 2001.
Okay, sounds good and looks like work for some of my batteries:

KNB-16A 0502F May 2002? 7+ years old battery
KNB-17A 0207F Feb 2007? 7+ years old battery
KNB-52N 1008F Oct 2008? 5+ years old battery

But what to do with these batteries?

KNB-52N 7302Н 5-6 years old battery
KNB-17A 9907 10+ years old battery

What to do with 73 and 99 prefixes? They can't be month or week #.

And why 02 but not 12 for just 5-6-years old battery?
 
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mmckenna

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I don't have an answer, but I can add this…

Just got a couple of new NX-3300's in with KNB-55L batteries.
Radio has only been out a year, and these batteries are probably a few months old at best considering they wouldn't have been on the shelf very long.

All 6 batteries are:
W52WJ

Considering batteries are made by a third party for Kenwood, there may be no correlation between different battery models, or date codes from manufacturer to manufacturer.
 

wireless_friendly

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NX3K/5K batteries info is useless, because those batteries have another date coding system and made by another contractor.
 

wireless_friendly

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KNB-52N, just come from dealer. JVCKenwood brand on boxes. Hotstamped as 1609I. Dealer asked Kenwood about mfg. date and they said "Feb 2018, just arrived to out warehouse".

Looks like there is no year and month in code :(
 
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