MIT built bioresorbable batteries for swallowed medical capsules

MIT researchers developed tiny bioresorbable batteries using magnesium and molybdenum trioxide that safely dissolve in the body. The battery delivers 1.84 volts, works for about three days and fully breaks down within weeks; testing so far is limited to animals.

• Magnesium and molybdenum trioxide battery delivers 1.84 volts
• Runs about 3 days, fully dissolves within weeks
• 20 minutes of stomach stimulation raised ghrelin by 50% in animals
• RFID tag transmitted from the GI tract up to 1.5 meters