A swallowed battery can turn serious within hours, often before anyone notices. The danger is hard to spot, and the products that hold these batteries are in nearly every room of the house. What you do in the first minutes can slow the injury and protect your child on the way to hospital.
Why a Swallowed Battery Is a Medical Emergency
When a swallowed battery lodges in the oesophagus the leftover electrical current reacts with saliva and moisture in the tissue, creating a strong alkali called hydroxide. That alkali burns the lining of the oesophagus, and the burn grows deeper for as long as the battery stays in place. Damage can become serious in as little as two hours. A burn that deep can make a hole in the wall of the oesophagus, called a perforation, or it can burn through to the airway or a nearby blood vessel. This causes heavy internal bleeding and, in some cases, even death.
Wider batteries hold more charge and are the most likely to lodge in a small child’s oesophagus. A battery of this kind is the most urgent.
Signs Your Child Has Swallowed a Battery
Most children swallow a battery without anyone seeing it happen. They may be too young to tell you, and in the early stage there can be no signs and symptoms at all. The early signs of a swallowed battery are easy to mistake for a cold or an upset stomach. Watch for:
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Less appetite, or trouble eating solid food while still able to drink
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Drooling, or problems swallowing
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Noisy breathing, coughing, or a grunting sound
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Vomiting, or bringing food back up
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Fever
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Chest pain or abdominal pain
Call an ambulance straight away if you see spitting blood, blood-stained saliva, or very dark or black bowel motions. If you suspect your child has swallowed a battery, get medical help straight away, even if they seem well.
First Aid for If You Think Your Child Has Ingested or Swallowed a Battery
Treat any swallowed battery as urgent from the moment you suspect it. Call Triple Zero (000) for an ambulance immediately. If your child is breathing normally, call the Poisons Information Centre on 13 11 26. They will direct you to the nearest hospital emergency department for an urgent x-ray and advise you on giving honey. Across Australia, this is the number for expert advice on any poisoning.
Do not let your child eat or drink anything, and do not try to make them vomit. The exceptions are honey and jam, which can slow the burn. Give children aged 12 months or older 2 teaspoons (10 mL) of honey every 10 minutes, up to six doses, while you wait for the ambulance. Give babies under 12 months old jam as honey can sometimes cause a rare illness called infant botulism.
Take any new symptom seriously in the weeks after doctors have removed the battery. Blood when your child coughs or vomits, new trouble breathing, or a fever in that period can signal delayed injury. Get it checked straight away.
Batteries Lodged in the Nose or Ear
Young children also push batteries into their nose or ear, especially smaller button batteries. A battery lodged in the nose or ear burns the surrounding lining within hours and needs to come out urgently. Signs of a battery in the nose or ear include pain, bleeding, a discharge, or a bad smell.
Do not try to dig the battery out yourself. Poking at it can push it deeper or cause more harm. Otherwise call the Poisons Information Centre on 13 11 26, who will tell you where to take your child for removal.
Lowering the Risk of a Swallowed Battery at Home
The first thing to do is learn which button battery operated products are in your home. They power remote controls, car key fobs, watches, hearing aids, thermometers, kitchen scales, flameless candles, musical greeting cards, reading lights, and flashing toys or decorations.
Small children explore by putting things in their mouths, and loose batteries are easy to swallow or push into the nose. Keep these products, and any spare batteries, out of sight and out of reach. Check that battery compartments on toys and devices are child resistant, meaning they need a screw or two separate actions to open. Tape shut any compartment that pops open on its own.
Store spare and used batteries in a high, locked place, well away from young children. Keep used batteries out of reach and dispose of them quickly. Try to buy button batteries that are sold in child resistant packaging.
Childcare First Aid Training for Parents and Carers
The outcome of a swallowed battery rests on one phone call to the right number. When you act on suspicion alone, before any symptoms appear, your child has the best chance. The parents who calmly handle these emergencies are the ones who have worked through them ahead of time. A childcare first aid course gives you that practice in person, building responses you can run on instinct when a young child is in danger. When your child swallows a battery, you will want to already know what to do.
FAQs
What Is the Method for Safe Disposal of Batteries?
Tape over the battery’s terminals with clear sticky tape, then keep it in a glass jar until you can recycle it. Take them to a B-cycle drop-off point for recycling, found at many supermarkets, libraries, and battery retailers.
Are Button Batteries More Dangerous?
Yes. Button battery ingestion is more likely due to their smaller size. Lithium coin batteries are around 20 mm and can easily jam in a child’s oesophagus and cause button battery injuries like burns.
Can a Swallowed Battery Pass Through on Its Own?
Sometimes. Once in the stomach, a battery may pass through the gut and come out in the stool within a few days.
