Looking for middle brother for my batteries

**pukipuki** · 12-12-2019, 01:43 AM

Looked at my batteries today and turned out they are 1 number apart

One was bought on Amazon around Oct 2015, another came from B&H in k3ii in Feb 2016

Most obvious reason could be that Ricoh sold total of 3 batteries in 4 months in US

Although, there is a negligible chance that it is pure coincidence

MarkJerling · 12-12-2019, 02:15 AM - **1 Like**

I believe that's a year and month code.

**pukipuki** · 12-12-2019, 02:17 AM

aaah.. alright

biz-engineer · 12-12-2019, 05:47 AM

That's not a serial number, that's a date code: year and month. Batteries are manufactured into production lots. I bought two batteries one year apart but both were manufactured a couple months apart (unfortunately, as wanted to have the latest purchase from a newer batch). Li-Ion batteries age in storage, so it's better when the battery we buy is from a recent production lot. I'll buy another set of D-LI90 next year, hopefully from second half of 2019 production lots, or maybe I have to wait until end-2020 to get 2019## date code.

tvdtvdtvd · 12-12-2019, 07:41 AM

As said above, that's not a unique serial number but rather a batch code. So, assuming batches were made on '08', you might still reasonably
complete your sequential run.

35mmfilmfan · 12-12-2019, 08:27 AM

How to turn photography into philately :-)

12-12-2019, 01:43 AM	#1
pukipuki Site Supporter Join Date: May 2014 Location: WA Photos: Gallery Posts: 76	Looking for middle brother for my batteries Looked at my batteries today and turned out they are 1 number apart One was bought on Amazon around Oct 2015, another came from B&H in k3ii in Feb 2016 Most obvious reason could be that Ricoh sold total of 3 batteries in 4 months in US Although, there is a negligible chance that it is pure coincidence

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12-12-2019, 02:15 AM - 1 Like	#2
MarkJerling Moderator Site Supporter Join Date: May 2012 Location: Wairarapa, New Zealand Photos: Gallery \| Albums Posts: 15,266	I believe that's a year and month code.

12-12-2019, 02:17 AM	#3
pukipuki Site Supporter Join Date: May 2014 Location: WA Photos: Gallery Posts: 76 Original Poster	aaah.. alright

12-12-2019, 05:47 AM	#4
biz-engineer Pentaxian Join Date: Feb 2015 Photos: Gallery \| Albums Posts: 8,309	That's not a serial number, that's a date code: year and month. Batteries are manufactured into production lots. I bought two batteries one year apart but both were manufactured a couple months apart (unfortunately, as wanted to have the latest purchase from a newer batch). Li-Ion batteries age in storage, so it's better when the battery we buy is from a recent production lot. I'll buy another set of D-LI90 next year, hopefully from second half of 2019 production lots, or maybe I have to wait until end-2020 to get 2019## date code.

12-12-2019, 07:41 AM	#5
tvdtvdtvd Pentaxian Join Date: Jan 2010 Posts: 1,649	As said above, that's not a unique serial number but rather a batch code. So, assuming batches were made on '08', you might still reasonably complete your sequential run.

12-12-2019, 08:27 AM	#6
35mmfilmfan Pentaxian Join Date: Oct 2016 Location: Norfolk, UK Posts: 1,878	How to turn photography into philately :-)

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