Lithium ion batteries store a large amount of energy and can burn explosively: ⛔ Never use off-brand chargers to charge your batteries ⛔ Never over-charge your batteries ⛔ Never charge your phone or other devices under a pillow or on soft furniture ⛔ Never store an e-bike or e-scooter near an exit Get more tips: https://www.cityofmadison.com/fire/your-safety/lithium-ion-battery-safety | City of Madison Fire Department | Facebook