Sennheiser Bluetooth Headphones **Won't Charge** #freecycle

Sennheiser HD 350BT Over-Ear Sound Isolating Bluetooth Headphones - Black (NOT CURRENTLY FUNCTIONAL) These headphones stopped charging a while back, and they're currently not turning on. I never tried taking them in, and just bought a new pair. Figured if someone wants to try to fix them, it's better than the landfill.