![My dad got the battery in his pacemaker replaced and they let him keep the old one : r/mildlyinteresting My dad got the battery in his pacemaker replaced and they let him keep the old one : r/mildlyinteresting](https://preview.redd.it/vp91nfmpbos71.jpg?auto=webp&s=e2746886d800eb75cedb6cd6c5a680a18bd23dfb)
My dad got the battery in his pacemaker replaced and they let him keep the old one : r/mildlyinteresting
![Pacemaker that uses the heart to generate its own electricity and doesn't need batteries | Daily Mail Online Pacemaker that uses the heart to generate its own electricity and doesn't need batteries | Daily Mail Online](https://i.dailymail.co.uk/1s/2019/04/23/14/12614682-6950607-image-a-42_1556026530781.jpg)
Pacemaker that uses the heart to generate its own electricity and doesn't need batteries | Daily Mail Online
![Human movement, sweat, breath may one day replace batteries in implantable and wearable medical devices. - The Washington Post Human movement, sweat, breath may one day replace batteries in implantable and wearable medical devices. - The Washington Post](https://arc-anglerfish-washpost-prod-washpost.s3.amazonaws.com/public/KSPERGDKPUI6RIZVYRID2BA6V4.jpg)
Human movement, sweat, breath may one day replace batteries in implantable and wearable medical devices. - The Washington Post
![Powering a Pacemaker from Within: a Light-Harvesting Implant May Eliminate Battery-Replacement Surgery - News Powering a Pacemaker from Within: a Light-Harvesting Implant May Eliminate Battery-Replacement Surgery - News](https://www.allaboutcircuits.com/uploads/articles/Energy_harvester_on_a_pig%E2%80%99s_heart..jpg)