How to read a NorthStar battery date code

Decode a battery date code now (runs in your browser).

The rule

Back label: a month letter then the last digit of the year. The letters skip E and I: A to D are January to April, F is May, then G, H, J, K, L, M, N through December.

Source: Odyssey/NorthStar, "Battery Serial Numbers and Date Codes" (April 2021), p. 1.

Worked examples

Verify the result with the maker or the shop. The year digit repeats every ten years.