This article from the FDA points out just why patients with implantable electrical medical devices might be excited to see the development of ways to recharge those devices that don't include making a surgical incision in order to replace an electrical "Generator" ( a battery ) that is on the banana peel and slipping ( near its EOL, end of life ).

https://www.fda.gov/medical-devices/products-and-medical-procedures/implants-and-prosthetics