Dear customer, you have bought a battery-operated device in our shop.
The durabiltiy of a battery indeed is very long, but neverthelesse it has to be recycled sometime. Old batteries mustn't be disposed in domestic waste. End users are legally obligated to bring batteries to an applicable collecting point. You can also send your old batteries to SunLiner GmbH, Kiebitzheide 11-21, 49084 Osnabrück by mail. Old batteries contain valuable raw materials which can be recycled.
The environment and SunLiner say thank you!