Etymotic The BEAN® Quiet Sound Amplifier® - Manual (Page 6)

BATTERIES
(CONTINUED)
Zinc-Air Batteries
QSAs use commonly-available #10 zinc-air hearing aid batteries.
They are easy to find in pharmacies, online and other retail locations,
including Radio Shack.
• Zinc-air batteries have a long shelf life, but once the tab is removed,
battery life is about 9 days for continuous operation.
• Battery life is about 2 weeks if the devices are turned off
after each use.
• Once the tab is removed, zinc-air batteries may self-discharge
in about 4 weeks whether used or not.
• The discharge rate varies with temperature and humidity.
• It is sometimes possible to prolong the life of a battery by replacing
the tab over the air holes, but results vary.
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