You Still Shouldn't Eat Watch Batteries, But...
Why It Matters
A battery that mitigates internal electrolysis could reduce pediatric ingestion injuries, influencing product safety standards and consumer confidence.
Key Takeaways
- •Energizer’s new lithium coin battery claims no throat burns if swallowed.
- •Titanium alloy electrode prevents water electrolysis, stopping harmful hydroxide formation.
- •Experiments showed titanium‑coated positive terminal produced no bubbling or pH shift.
- •Battery size matches child’s esophagus, raising safety concerns despite new design.
- •Energizer confirmed proprietary titanium alloy reduces electrochemical reaction risk.
Summary
The video investigates Energizer’s claim that its latest 20 mm lithium coin battery will not cause burns if a toddler swallows it. The presenter examines the battery’s chemistry, focusing on a proprietary titanium alloy used for the positive electrode.
Through a ham‑electrolysis demo and pH testing, he demonstrates that the titanium alloy forms a thin oxide layer that starves the circuit of electrons, halting water splitting and preventing the formation of corrosive hydroxide ions. In contrast, a stainless‑steel electrode produces vigorous bubbling and a basic pH shift.
Energizer’s Dan confirms the battery’s dimensions approximate a child’s esophagus and acknowledges the presenter’s hypothesis was “very close.” He explains the alloy’s role in suppressing electrolysis, and the side‑by‑side test shows the new battery remains inert while a standard one bubbles.
If the titanium‑based design reliably prevents internal electrochemical damage, it could markedly lower the incidence of severe injuries from accidental battery ingestion, though safety warnings will likely remain essential.
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