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

6
Batteries (continued)
Zinc-Air Batteries
The BEAN uses 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.