Parents are being urged to be aware of the danger of button batteries after a girl who swallowed one died.
Horrific images show how just one button battery can damage the body four hours after a child swallows it.
CPR Kids founder Sarah Hunstead simulated such an incident with a chicken fillet and shared pictures of the shocking results on Facebook .
She placed a button battery in between the fillet and left it for up to four hours.
Within 30 minutes, the battery appeared tarnished and slightly burnt. It also left black marks around the fillet with a clear round mark at the bottom of the flesh.
She then left it in for another three and a half hours, the button battery was corroded into the meat with bubbles around.
It also scarred the chicken fillet with charcoal-like marks.
Sarah told Daily Mail: "[This is to show] just how corrosive batteries are.
"It really demonstrates how much damage it can cause when a child swallows a button battery - this is why it is deemed a medical emergency."
The warning comes after the investigation into the death of a two-year-old girl, Francesca Asan, who had swallowed a button battery used in 3D TV glasses in 2016.
Francesca was rushed to hospital after becoming ill and died within hours.
The battery had burnt through an artery close to her windpipe, it is reported.
According to the Healthcare Safety Investigation Branch, the small, round batteries can become dangerous when it come into contact with a wet surface, such as in the nose, ear or the oesophagus.
It triggers a chemical reaction as the battery starts to 'release its current'.
If a child or anyone is thought to have swallowed one, they could experience internal burns in the upper chest area.
HSIB medical director Dr Kevin Stewart said: "These batteries pose a very real risk to small children and babies, and the consequences of swallowing a button battery can be truly devastating.
"It’s important that everybody knows that these batteries can be found everywhere, from toys to gadgets such as remote controls, digital scales and car fobs. The best way to protect children is to place everything securely out of reach."
