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Audi Environmental Foundation supports Nunam: cells from old laptop batteries become mobile power banks

The source of power also helps protect the environment: the power banks are charged with solar energy and not with coal-based electricity, for example.

Nunam co-founder Prodip Chatterjee says: We are creating win-win situations: Old battery cells that would otherwise end up in residual waste are first reused and then disposed of properly. Scrap dealers earn money by reselling to us and Indian families and merchants benefit from affordable power banks. A five-year-old laptop can serve as a light source for Indian fruit and vegetable merchants at a market, can power a small fan or can charge a mobile phone. Millions of people in India live without reliable access to electricity and can benefit from solutions like this.

Nunam tests the condition and capacity of every battery cell purchased from electrical scrap. Cells with more than 60 percent residual capacity are assembled into new power banks. Cells that can no longer be used are passed on by Nunam to a local battery recycling company which recycles them professionally. The project collects important findings this way on the reusability, performance and service life of new battery systems made from a maximum variety of different cells.

The Audi Environmental Foundation is funding the pilot phase of the project, during which Nunam plans to develop the new power banks to production maturity. In the long term, Nunam plans to set up a small-scale production facility and transfer the findings to other sources in order to develop additional power sources. Together with the department of Electrical Energy Storage Technology, Nunam is working on a model to better predict the wear and tear of used batteries.

Original article

Sep 08, 2020 at 15:17

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