ELWING E1-500 Mode D'emploi page 17

Do not charge the skateboard and/or remote if the battery enclosure
becomes cracked, swollen, or shows any other signs of misuse.
Discontinue use immediately and promptly dispose of unit.
Product and Battery Disposal Information
Your device should not be placed in municipal waste. Please check
local regulations for proper disposal of electronic products.
If this unit shows any type of damage, such as bulging, swelling, or
disfigurement, discontinue use and immediately contact customer
support by emailing support@elwingboards.com
Dispose of used batteries in accordance with the prevailing
community regulations that apply to the disposal of batteries.
Never dispose of used batteries with other ordinary solid wastes.
Batteries contain toxic substances.