How Old Or New Are Your Deep-Cycle Batteries?
Used and refurbished battery-powered equipment are abundant and are often found at great prices. Although the vehicle may be in good working order, it’s important to determine how old the deep-cycle batteries are. In most cases, battery manufacturers stamp or etch a date code on the battery indicating the month, year, and location of manufacture.
U.S. Battery uses a stamped code on the terminals of its flooded lead-acid batteries. The top left letter stamped on the terminal correlates to the month it was manufactured (A-L refers to January to December). In this example, the letter “K” is the 11th month indicating the battery was manufactured in November. The number indicates the year 2014, and the bottom letter specifies the U.S. Battery plant where it was produced.
U.S. Battery Mfg. Co. Plant Codes
- The letter “X” is for Corona, California plant.
- The letter “Y” is for Augusta, Georgia plant.
- The letter “Z” is the Evans, Georgia plant.
U.S. Battery Mfg. Co. AGM Date Code
On U.S. Battery AGM Batteries, the date, month, and year on the battery case are etched into the top of the battery and are clearly visible. The date is in the format of DDMMYY or YYMMDD. In this example, September 15, 2014.
Please advise my batteries code is (I 0 x) what year manufactured. How old my batteries…..
Hi,
Your batteries were manufactured September (I), 2020 (0), in Corona, CA (X).
Best,
-Mike Wallace, Director of Marketing
Please advise my batteries code is E1Y. What year were they manufactured?
Hi Jayson,
Your batteries were manufactured in May 2011 at our Augusta, GA plant.
Best,
-Mike Wallace, Director of Marketing
What would the date code be on a flooded deep cycle US battery manufactured in 2021?
Hi Rex,
The date code will have a “1” stamped on the terminal, and the labels will look like the ones featured on our website. If there is a “1” and the labels are different from our website, it is most likely 2011.
Best,
-Mike Wallace, Director of Marketing
My batteries say CO21N
Can you tell me the age please?
Thanks you
Hi Lee,
C021N is an internal tracking code and is not the date code. The date code is composed of two letters, and a number in a triangle configuration stamped directly into the metal of the positive terminal. Letters X, Y, Z indicate the factory it was built at.
U.S. Battery Mfg. Co. Plant Codes
The letter “X” is for Corona, California plant.
The letter “Y” is for Augusta, Georgia plant.
The letter “Z” is the Evans, Georgia plant.
Letters A-L indicate the month; A= January, B = February, etc. The Number signifies the last digit of the year; 9 = 2019, 0 = 2020, 1 = 2021, 2 = 2022.
Best,
-Mike Wallace, Director of Marketing
What would the date be for the following: A262D2
It is on a US250XC and does not seem to follow your code breakdown.
Thanks,
Hi Aaron,
A262D2 is an internal tracking code and is not the date code. The date code is composed of two letters, and a number in a triangle configuration stamped directly into the metal of the positive terminal. Letters X, Y, Z indicate the factory it was built at.
U.S. Battery Mfg. Co. Plant Codes
The letter “X” is for Corona, California plant.
The letter “Y” is for Augusta, Georgia plant.
The letter “Z” is the Evans, Georgia plant.
Letters A-L indicate the month; A= January, B = February, etc. The Number signifies the last digit of the year; 9 = 2019, 0 = 2020, 1 = 2021, 2 = 2022.
Best,
-Mike Wallace, Director of Marketing
My batteries have D2Y.
We just bought cart and were told they were new batteries. Is that 4/2022? They were purchased in March. Please advise.
Thanks
Hi William,
You are correct, D2Y is 4/2022. The date codes are about a month and a half ahead of the time they actually leave the facility. So, your batteries were actually built in late February or March.
Best,
-Mike Wallace, Director of Marketing
Let me try this again,
On the battery post is L1Y
In a white circle on top of battery is M21
Etched on Battery is A28504
1120-E
Is this battery still under warranty, the reason I ask is because my Battery post on this Battery the post melted and my cable can no longer be attached to battery.
Can you explain all the codes/numbers, what year is the battery?
Hi James,
Thank you for choosing U.S. Battery products, and I am sorry that you are experiencing an issue with one of them.
The date code is the L1Y stamp on the battery terminal. That code indicates that the battery was manufactured either in 12/2021 or 12/2011 in Augusta, GA. You can distinguish the year based on the battery label. If the label looks like the batteries displayed on our website currently, then it is from 2021. If the labels look different, your battery is most likely from 2011. The other codes are manufacturing codes, which we use for internal tracking during the production process.
The best way to determine warranty coverage would be to contact the dealer where you purchased the battery.
Best,
-Mike Wallace, Director of Marketing
31c202 is mfg date ?
Hi Ho,
31c202 is not the date code of your battery. The date code is composed of two letters, and a number in a triangle configuration stamped directly into the metal of the positive terminal. Letters X, Y, Z indicate the factory it was built at.
U.S. Battery Mfg. Co. Plant Codes
The letter “X” is for Corona, California plant.
The letter “Y” is for Augusta, Georgia plant.
The letter “Z” is the Evans, Georgia plant.
Letters A-L indicate the month; A= January, B = February, etc. The Number signifies the last digit of the year; 9 = 2019, 0 = 2020, 1 = 2021, 2 = 2022.
Best,
-Mike Wallace, Director of Marketing
My 8VGC-XC batteries have date code H0Y.
Were the batteries made in August 2010 or August 2020?
Hi Bill,
If the battery case is red it is from August 2020, however, if the battery case is white it is from August 2010.
Best,
-Mike Wallace, Director of Marketing
Mike,
Well, 2010 it is. Hard to believe the batteries were functioning at all after 11-1/2 years.
Thanks!
Bill