After removing the sticker from a zinc-air battery, how long should you wait before placing it in the battery compartment?

After removing the sticker from a zinc-air battery, how long should you wait before placing it in the battery compartment?

• A. Zero minutes
• B. One minute
• C. Five minutes
• D. Ten minutes

Answer: (B)

The key idea is how zinc-air batteries activate. Once the sticker is removed, the battery is exposed to air, and the zinc-air chemistry starts because oxygen from the room must diffuse into the activated layer. That activation happens quickly, but it isn’t instantaneous—the voltage needs a moment to stabilize so the battery can deliver its rated power reliably in the device. Waiting about one minute gives enough time for the activation to reach a usable level. If you plug it in immediately, you might experience a weaker start or shorter performance as the chemical reaction hasn’t fully stabilized yet. Waiting longer than necessary isn’t required, so one minute is the practical, recommended wait. So after removing the sticker, pause for roughly sixty seconds before placing the battery in the hearing aid.

The key idea is how zinc-air batteries activate. Once the sticker is removed, the battery is exposed to air, and the zinc-air chemistry starts because oxygen from the room must diffuse into the activated layer. That activation happens quickly, but it isn’t instantaneous—the voltage needs a moment to stabilize so the battery can deliver its rated power reliably in the device.

Waiting about one minute gives enough time for the activation to reach a usable level. If you plug it in immediately, you might experience a weaker start or shorter performance as the chemical reaction hasn’t fully stabilized yet. Waiting longer than necessary isn’t required, so one minute is the practical, recommended wait.

So after removing the sticker, pause for roughly sixty seconds before placing the battery in the hearing aid.