My nephew Lucas’ favourite pair of light-up sneakers have gone through three battery changes this year, which means three separate moments of me sitting on the floor with a tiny screwdriver, a three-year-old hovering, and a flat silver disc I really did not want anywhere near her mouth. Every parent (or aunt!) of a small child has some version of this scene. What most of us don’t clock is how genuinely dangerous that little disc is.
For such a mundane object, coin lithium batteries are in more of your house than you’d think – remotes, key fobs, bathroom scales, that singing birthday card you can’t figure out how to turn off, and increasingly, your kid’s toys. In Australia, around 20 children end up in emergency departments every week after swallowing or inserting a button battery. Doctors treat these incidents as genuine emergencies – not a “keep an eye on it” situation – because the batteries can begin damaging tissue within just 15 minutes. A 20mm battery is roughly the same size as a young child’s oesophagus, meaning it can lodge itself instead of passing through. Once it gets stuck, the clock starts ticking.
If you’re a parent or carer of a toddler, you’ve probably already done the audit: gone around the house checking that remotes, key fobs and bathroom scales have their battery compartments screwed shut. But the ones that catch people out are the toys. Light-up sneakers, singing books, tiny remote-control cars, and party favours that flash for approximately four minutes before giving up all rely on coin batteries – and many kids’ products tuck them away in compartments that are far less secure than the adult gadgets around the home.
Energizer understood the assignment. And has just launched something genuinely worth knowing about if this is a fear that lives rent-free in your head. The brand’s new Energizer Ultimate Child Shield range (in sizes 2032, 2025 and 2016) claims a first: it’s the world’s only coin lithium battery designed to prevent ingestion burns if swallowed.
Here’s how it actually works. (Well as much of the IP we could get them to spill). Energizer was already the brand that pioneered child-resistant battery packaging, so that part’s not new. What is new is a proprietary titanium alloy build that stops the chemical reaction responsible for burns before it can even start – essentially removing the burn risk from the ingestion equation entirely, even if a battery does end up somewhere it shouldn’t. Layered on top of that is a non-toxic bitter coating, which is there purely to make a swallowed battery as unappealing as possible, and a colour alert feature that reacts with saliva to visibly dye a child’s mouth blue – a blunt but genuinely useful signal for a caregiver to act fast rather than second-guess what happened.
Rescueblue co-founder and paramedic Theo Mallos, who’s seen these cases play out in real time, called the new safety feature an encouraging development for families. Energizer’s Amanda Broderick framed it as the natural next step for a category of battery that’s only becoming more common in our homes.
None of this is a substitute for the boring-but-important stuff, though. Batteries – new or “dead” – should live in child-resistant storage, out of sight and reach, not in a kitchen drawer your three-year-old has already worked out how to open. And, when it’s time to dispose of used batteries, parents and carers should tape both sides before dropping them at a B-cycle point – never toss them loose in the bin, where they can become a fire risk. You’ll find B-cycle collection points at many Woolworths, Bunnings, Kmart and Officeworks stores.
As Australian kids’ entertainer Dr Emma Watkins put it, so much of this comes down to simply being aware of how easily these batteries slip into everyday family life. It’s not dramatic, it’s not glamorous, but it’s the kind of quiet innovation that’s actually worth caring about.
