Button Battery Safety: A Hidden Danger for Young Children

Why button batteries are uniquely dangerous

Unlike most swallowed objects, which either pass or cause obstruction, button batteries generate an electrical current that reacts with tissue moisture to produce sodium hydroxide (lye), causing progressive tissue burns 1Ref 1Chandler MD, Ilyas K, Jatana KR, Smith GA, McKenzie LB, MacKay JM (2022).Pediatric Battery-Related Emergency Department Visits in the United States: 2010–2019.Battery-related ED visits in US children more than doubled 2010–2019; one child every 75 minutes; 84% of patients age 5 or younger; 85% involved button batteries. The most dangerous location is the esophagus, where a battery can become lodged at the level of the aortic arch. Serious tissue damage can occur within 2 hours, and perforation, severe bleeding, tracheo-esophageal fistula, or death can follow within days to weeks if the battery is not removed promptly 2Ref 2American Academy of Pediatrics (AAP Council on Injury, Violence and Poison Prevention) (2024).How Small Batteries Can Become Dangerous to Children.AAP guidance on button battery injury mechanism (sodium hydroxide production), danger locations, emergency response, and prevention for families.

What makes this particularly dangerous: a child may swallow a battery without anyone knowing, and early symptoms are often absent or resemble a mild illness — fussiness, mild coughing, drooling, or difficulty swallowing. Even a "dead" battery retains enough charge to cause serious injury 3Ref 3National Capital Poison Center (2024).Button Battery Ingestion Triage and Treatment Guideline.Honey dosing protocol (2 tsp / 10 mL every 10 minutes, children over 12 months only), tape-before-disposal guidance, and triage recommendations for suspected button battery ingestion.

Which products contain button batteries

Button batteries are found in a remarkably wide range of everyday items:

• Remote controls (TV, ceiling fan, air conditioner)
• Key fobs and car keys
• Hearing aids
• Digital thermometers
• Musical greeting cards
• Small toy remotes, flashing toys, and light-up shoes
• Calculators and small electronics
• Bathroom scales
• Flameless candles and decorative lights
• Wristwatches and small clocks

Many of these items have battery compartments that are easy for a toddler to open. A dropped battery on the floor may not be noticed. Discarded batteries in drawers or bags retain dangerous charge long after they stop powering a device 3Ref 3National Capital Poison Center (2024).Button Battery Ingestion Triage and Treatment Guideline.Honey dosing protocol (2 tsp / 10 mL every 10 minutes, children over 12 months only), tape-before-disposal guidance, and triage recommendations for suspected button battery ingestion.

Prevention: securing the batteries

Prevention focuses on making batteries inaccessible. Battery compartments secured with a screw are much safer than push-in or slide-open designs — if a compartment does not require a tool to open, it should be reinforced with strong tape as an additional barrier. Devices with unsecured compartments, including some musical greeting cards and inexpensive toys, warrant special attention. Spare batteries should be stored out of reach and out of sight in a locked container. Old batteries should be taped before disposal (covering both poles) to prevent any residual current 3Ref 3National Capital Poison Center (2024).Button Battery Ingestion Triage and Treatment Guideline.Honey dosing protocol (2 tsp / 10 mL every 10 minutes, children over 12 months only), tape-before-disposal guidance, and triage recommendations for suspected button battery ingestion. Household members who use hearing aids — including grandparents who may visit — should store batteries securely.

What to do if you suspect a swallowed battery

This is an emergency, not a wait-and-see situation. If there is any suspicion that a child has swallowed a button battery — a missing battery, a child who was near an open battery compartment, or any symptoms — go to the emergency department immediately without waiting for symptoms. Do not give food or drink.

For children over 12 months, the National Capital Poison Center recommends giving 2 teaspoons (10 mL) of honey every 10 minutes on the way to the ED; evidence suggests this may slow esophageal injury. Do not give honey to infants under 12 months (botulism risk) 3Ref 3National Capital Poison Center (2024).Button Battery Ingestion Triage and Treatment Guideline.Honey dosing protocol (2 tsp / 10 mL every 10 minutes, children over 12 months only), tape-before-disposal guidance, and triage recommendations for suspected button battery ingestion. Confirm the approach with Poison Control (1-800-222-1222) on the way to the ED. The ED will use X-ray to locate the battery and remove it urgently if it is lodged in the esophagus.

After removal: follow-up matters

Even after a battery is removed, tissue damage may continue for days to weeks. Follow-up care is important, and families should watch for signs of complications — difficulty swallowing, pain, fever, or any new symptoms — and return to care if these develop. Late complications from esophageal burns, including tracheo-esophageal fistula and vascular injury, can appear weeks after the initial incident 2Ref 2American Academy of Pediatrics (AAP Council on Injury, Violence and Poison Prevention) (2024).How Small Batteries Can Become Dangerous to Children.AAP guidance on button battery injury mechanism (sodium hydroxide production), danger locations, emergency response, and prevention for families.