The dangers of button batteries and importance of keeping them safely secured

button batteries

Button batteries or lithium coin cell batteries are widely used in many devices. Anything that flashes or makes a sound is likely to contain one of these.

If swallowed, these tiny batteries can cause considerable damage.

Sometimes button batteries pass straight through without causing harm.

However, serious problems occur when a battery, particularly a lithium coin battery, gets stuck in the oesophagus or gut.

The resulting burns are not due to chemicals leaking from the battery but because the battery itself reacts with bodily fluids, such as saliva. This reaction releases a substance like caustic soda, which is a strong alkali (as dangerous as a strong alkali) that burns through flesh. This is similar to the substance used to unblock drains!

Even ‘dead’ batteries can cause damage so should be treated just as carefully as new batteries.

The burns from the caustic soda can lead to catastrophic internal bleeding and death. The reaction can happen in as little as two hours.

Button batteries can also cause serious damage if they get stuck in a child’s nose or ear.

How many children are affected?


There are at least 2 avoidable deaths every year from children swallowing batteries. There is an ongoing study to establish exactly how many children present at A&E having swallowed batteries as we don’t currently have this data. They will also assess how many have needed surgery and experienced life-changing injuries from them too.

It is suspected that the number of children affected is likely to be similar to that in Australia. There 4 children a week require hospital treatment following battery ingestion.

Button batteries are ingested by children more 2,500 times a year in the United States.  There has been more than a 12-fold increase in fatal outcomes in the last decade compared to the prior decade.


How little ones get hold of batteries:

There are many ways that these accidents happen.  Some of the most likely ways that children get hold of batteries is as follows:

  • The battery falls out when a device is dropped.
  • A ‘flat’ battery is removed and left on a worktop, table or somewhere accessible to children.
  • A packet of batteries is opened and the batteries spill out and roll under furniture.
  • Spare batteries are stored in an easy-to-reach drawer in the lounge or kitchen.
  • The button battery compartment of a toy or other device isn’t secured.
  • Remain vigilant in your home, when visiting friends and family and when out and about, at play areas and in shops.

Prevention is key:

Take 10 minutes to check all the areas where button batteries could be accessible to your children!

Choose batteries from reputable suppliers in child safety packaging.

Duracell also uniquely coat their batteries with Bitrex to prevent children from putting them in their mouths. Bitrex is absolutely revolting and this is a great deterrent.

Always remove flat batteries promptly – even a dead battery can react within a child and cause life-changing injuries.

Store new batteries out of sight and reach.

Check all devices to ensure their battery compartments are safely secured. If they are not safe – remove the device and keep it out of sight and reach of children.

Where do you find these batteries?

Button batteries are used in so many devices – from toys, medical devices such as thermometers, calculators and scales, singing cards, key fobs, remote controls and many other devices.

In the UK, batteries in children’s toys are covered by toy safety regulations. They should either be enclosed by a screw and a secure compartment or require two independent or simultaneous movements to open the battery compartment.

These regulations do not apply to other gadgets requiring batteries. Even if they compartments are secured, they can still be opened by a persistent and dexterous child.

  • Look round your home and check for lithium coin cell batteries – in products as well as spare and ‘flat’ batteries.
  • Keep all spare batteries in a sealed container in a high cupboard.
  • Keep products well out of children’s reach if the battery compartment isn’t secured.
  • Make a point of checking battery compartments to ensure they remain secure, every time you use a device.
  • Taping the secured battery compartment can add a further deterrent to make it even harder for children to access the batteries.
  • ‘flat’ or ‘dead’ batteries should be taken out of children’s reach straight away and recycled safely and as quickly as possible. Most supermarkets offer battery recycling.
  • Avoid toys from markets and discount stores as they may not conform to UK safety regulations and be extremely careful when buying online or from overseas. Always look for the CE safety mark.
  • Teach older children that button batteries are dangerous and never to play with them or give them to younger children.
  • Choose quality batteries that have double secure packaging and ideally find ones that are coated with Bitrex. Bitrex is a product so sour that children will not want to put them in their mouth and will spit them out immediately.
  • Share information and spread the word about how dangerous batteries can be if swallowed or inserted into an ear or nose. Help prevent further children from serious damage or dying.


What to do if you suspect your child may have swallowed a battery


  • If you suspect your child has swallowed a button battery, take them to your nearest Accident and Emergency (A&E) department as quickly as possible.
  • Do not delay getting to hospital.
  • Do not give them anything to eat or drink or try to make them sick. Vomiting could cause further damage from caustic soda as battery is vomited back up, in addition to the damage caused when it was swallowed.
  • If possible, try to find out what sort of battery your child swallowed but do not delay taking them to hospital if you cannot immediately see what they have swallowed.

Often symptoms of swallowing a button battery are not immediately obvious. Children may develop breathing difficulties or become more generally unwell. If the swallowed button battery starts to cause problems, children may cough up or vomit blood.

Batteries inserted into the nose or ear can also cause problems, such as nose bleeds or bleeding from the ear.


What if you didn’t see them swallow it, or are unaware they have done?


You may be unaware that they have swallowed a battery. Unfortunately, it is not usually obvious when a button battery is stuck and causing them damage. There are no specific symptoms associated with this. The child may:

  • cough, gag or drool
  • be sick
  • experience pain in their tummy, chest or throat
  • be tired or lethargic
  • have a fever
  • suffer from noisy, laboured breathing
  • be quieter or clingy and just ‘not themselves’
  • lose their appetite or have a reduced appetite and not want to eat solid food.

Symptoms may fluctuate, with pain coming and going.


If your child vomits fresh, bright red blood – this is often a clear sign that they have ingested a battery and you should seek immediate medical help.

It is extremely difficult to quickly identify that your child has swallowed a battery and consequently get them urgent medical care.

This is why it is so vital that everyone takes 10 minutes to search out these batteries and ensure they are safely secured and kept out of reach of small children.

Please share this information to help avoid further avoidable

About Us

Written by Emma Hammett for First Aid for Life


Award-winning first aid training tailored to your needs. Please visit our site and learn more about our practical and online courses. It is vital to keep your skills current and refreshed.


It is strongly advised that you attend a fully regulated Practical or Online First Aid course to understand what to do in a medical emergency. Please visit or call 0208 675 4036 for more information about our courses.


First Aid for Life is a multi-award-winning, fully regulated first aid training provider. Our trainers are highly experienced medical, health and emergency services professionals who will tailor the training to your needs. Courses for groups or individuals at our venue or yours.


First Aid for life provides this information for guidance and it is not in any way a substitute for medical advice. First Aid for Life is not responsible or liable for any diagnosis made, or actions taken based on this information.

References from:


Great Ormond Street

Alder Hey Hospital


Coronavirus disease (COVID-19) Information - As Essential First Aid Training We Continue to Run Face-to-Face First Aid, Blended and Online Courses. Click here to learn more...

Share This