Technical FAQs 4

Which batteries contain mercury?

Today the only types of batteries in the United States that contain mercury are button cell batteries and mercuric oxide batteries. The Mercury-Containing and Rechargeable Battery Management Act of 1996 prohibits the use of mercury in all other types of batteries.

Why do button cell batteries contain mercury?

Build-up of hydrogen gas can cause the battery to leak, limiting the ability of the battery to function. Mercury suppresses this zinc corrosion, which is why it is added to button-cell batteries. These batteries may contain mercury in the insulating paper surrounding the battery, or mercury may be mixed in the anode itself.

Are button cell batteries Mercury free?

The Mercury-Containing and Rechargeable Battery Management Act of 1996 prohibits the use of mercury in all other types of batteries. With the passage of this act, mercury-free alkaline batteries became the national standard for most types of batteries. Button cell batteries are miniature batteries in the shape of a coin or button.

What are mercuric oxide batteries?

Mercuric Oxide Batteries: In mercuric oxide batteries, mercury is used as an electrode rather than an additive to control gas buildup. These are rather specialty batteries and are often used in hospitals, military facilities and commercial applications.. Those can use more than 25 mg of mercury.

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Does the battery cabinet contain mercury

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