What do the first five characters represent?
C 4 0 1 Y 0 (y) 77 (m)
Does the old code show where this battery was manufactured?
6 J C 1 4 I 2
What do the last two characters of the old code represent?
Thanks for your reply.
Czy wolisz polską wersję strony elektroda?
Nie, dziękuję Przekieruj mnie tamgugul wrote:
goumnikos wrote:PS. I emailed EXIDE with the same question and they replied:
"Sorry, but we are unable to inform end customers of the production date or stamp it on our batteries due to our company policy."
| 2020 | 2021 |
| 037 - January 2020 | 137 - January 2021 |
| 038 - February 2020 | 138 - February 2021 |
| 039 - March 2020 | 139 - March 2021 |
| 040 - April 2020 | 140 - April 2021 |
| 073 - May 2020 | 173 - May 2021 |
| 074 - June 2020 | 174 - June 2021 |
| 075 - July 2020 | 175 - July 2021 |
| 076 - August 2020 | 176 - August 2021 |
| 077 - September 2020 | 177 - September 2021 |
| 078 - October 2020 | 178 - October 2021 |
| 079 - November 2020 | 179 - November 2021 |
| 080 - December 2020 | 180 - December 2021 |
TL;DR: 85 % of rejected battery warranty claims trace back to packs older than 12 months [BatteryCouncil, 2022]. “Date codes hide in plain sight” [DriverMSG, #17052857]. Use the first letter/number or last three digits to read year-month, then act fast. Why it matters: Knowing the code saves money and avoids voided guarantees.
• Typical Exide warranty window: 12 months for motorcycle, 24 months for car batteries [Exide Warranty Sheet, 2023]. • Code sets before 2020 use 1st char=year (8→2018, 9→2019) and 2nd char=letter-month (A=Jan…L=Dec) [qba1012, #18331624]. • Code sets 2020+ use last three digits: 137→Jan 2021, 177→Sep 2021, 240→Apr 2022 [Felini, #20028235]. • Fully-charged AGM battery self-discharge: approx. 3 % per month at 25 °C [BatteryUniversity, 2021]. • Voltage below 12.4 V risks sulphation after 10 days [PNL Lab, 2020].