1. Producers of the relevant category of batteries or, where appointed in accordance with Article 57(1), producer responsibility organisations, and Member States shall calculate the collection rate as the percentage obtained by dividing the weight of waste batteries, collected in accordance with Articles 59, 60 and 69, respectively, in a given calendar year in a Member State by the average weight of such batteries that producers either make available on the market directly to end-users or deliver to third parties in order to make them available on the market to end-users in that Member State during the three preceding calendar years. The collection rate shall be calculated for portable batteries in accordance with Article 59, and for LMT batteries in accordance with Article 60 respectively.
| Year | Data collection | Calculation | Reporting requirement | |
| Year 1 | Sales in year 1 (S1) | |||
| Year 2 | Sales in year 2 (S2) | |||
| Year 3 | Sales in year 3 (S3) | |||
| Year 4 | Sales in year 4 (S4) | Collection in year 4 (C4) | Collection rate (CR4) = 3*C4/(S1+S2+S3) | CR4 |
| Year 5 | Sales in year 5 (S5) | Collection in year 5 (C5) | Collection rate (CR5) = 3*C5/(S2+S3+S4) | CR5 |
| Etc. | Etc. | Etc. | Etc. |
2. Producers of the relevant category of batteries or, where appointed in accordance with Article 57(1), producer responsibility organisations, and Member States shall calculate the annual sales of batteries to end-users in a given year, as the weight of such batteries made available on the market for the first time within the territory of the Member State in the year concerned, excluding any batteries that have left the territory of that Member State in that year, before being sold to the end-users. Those sales shall be calculated separately for portable batteries and for LMT batteries.
3. For each battery, only the first time it is made available on the market in a Member State shall be counted.
4. The calculation provided for in points 1 and 2 shall be based on collected data or statistically significant estimates based on collected data.