Leave in the containers provided by the dealerships for this purpose. There is no cost to the user and no obligation to buy a new battery.
Rechargeable nickel battery

Rechargeable nickel battery
Batteries for DIY tools and other portable devices.
Where?
Battery bins
Which process is carried out?
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Specialised company
Treatment facility where valuable materials (plastic, glass and metal) are separated from hazardous or non-recyclable elements and decontaminated.
What does it become?
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Valuable metals
Recovery of valuable metals such as Bromine, Cadmium, Gold, Silver, Lead, Mercury, Nickel, Coltan, Copper, Cobalt or Palladium, for new electronic components.
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Plastic (devices)
Cases for electronic devices and components.