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Revised Guideline for Recycle Marking on Li-ion Batteries for the Japanese Market

1. Background
  • In Japan, for rechargeable batteries, it is mandatory under “the law for promotion on effective utilization of resources” to indicate the recycle mark on the battery and collect and recycle them when they become waste. It is also required to clear the targeted recycling rate (more than 30% for Li-ion batteries) that is defined by the ministerial ordinance.
  • In the battery recycling process, it is very difficult to separate Tin(Sn) and Phosphorous(P) from useful metals with current technology.
  • BAJ has been requested by battery recyclers to include an additional mark for identifying Li-ion batteries that contain over a certain amount of Sn and/or P. Therefore BAJ has decided to introduce the additional mark and a voluntary Guideline.
  • In April 2007, BAJ published “the Guideline for Recycle marking (5th edition)” reflecting this agreement in April 2010, BAJ published the 6th edition of "the Guideline for Recycle Marking” by adding “Iron” as the maximum amount of metal contained in the positive electrode.
2. How we revised?
    [Before]
  • Indication of Li-ion battery : Li-ion Mn, Li-ion Ni
    Near the three arrow mark, indicating the "Chemical symbol" of the maximum amount of metal in the positive electrode side of the "Li-ion"
    (In the case of Cobalt, indication of "Co" is not required.)
    [After]
  • Indication of Li-ion battery : Li-ion
    Near the three arrow mark, indicating ": the maximum amount of metal contained in the positive electrode" and ": the metals which disturb the recycling of main metals" with two numbers.
3. Marking and Calculation Method

Example: Indicate "Li-ion 00" near the three arrow mark


1st Number: Max. amount of metal contained in the positive electrode
0: Cobalt
1: Manganese
2: Nickel
3: lron


2nd Number: Metals which hinder the recycling of main metals
0: None
1: In case "Tin (Sn)" content in a single cell is more than 1.0 wt% per single cell weight
2: In case "Phosphorous (P)" content in a single cell is more than 0.5 wt% per single cell weight