Etymotic DI-15® High-Definition Electronic Earplugs for Dentists - Manual (Page 9)

9
Batteries
Zinc-Air Batteries
Use commonly-available #10 zinc-air hearing
aid batteries. They are easy to find in pharmacies,
online, and at various retail locations.
• 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 10-12 days 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.
Low Battery Warning
LOBAT ™ : A ticking sound becomes faster and louder,
like the sound of a motorboat when the battery is
about to die. After the warning sound first becomes
audible, it may be a few hours before the battery
dies. Performance and protection do not change
while LOBAT is sounding.