Edible batteries power medical devices in the body

TL;DR - Researchers tested tiny edible batteries that can power medical devices inside pigs and then dissolve in the digestive tract over several months. The work could enable temporary ingestible devices without requiring battery retrieval.

• The batteries are designed from edible or digestible materials.
• Testing in pigs demonstrated their use inside the body.
• The power sources dissolve after several months in the digestive tract.
• The limited description does not provide performance, safety, or device-specific results.