7.6 Battery Replacement
The batteries are manufactured with a six (6) year life expectancy. However, from manufacture
to installation there may a lapse of as many as six months. Each unit will have a sticker installed,
noting when the battery must be replaced. An identical sticker is supplied with the unit to be
placed in the log book as a reminder.
All batteries should be replaced in the event of any one of the following:
• After use of the ELT in an emergency;
• After an inadvertent activation of unknown duration;
• When the cumulative time of all known transmissions exceeds one hour; and,
• On or before the proposed battery replacement date.
The owner/operator or any A&P can change the batteries. A new pack comes mounted to the
new bottom cover of the unit. Before removing the unit you must first install the shipping plug to
insure the system is not activated during maintenance. Unscrew the bottom cover marked
“Replacement Battery” and install the new battery unit. A two pin Quick Disconnect Plug makes
installation easy. Replace the gasket with the new one that will be provided.
NO SPECIAL TOOLING IS REQUIRED.
The quick disconnect will not allow for the polarity of the batteries to be reversed
Special note:
While it is always important to be careful with Electro-Static-Discharge ESD,
there are no exposed circuits to be concerned with during normal battery replacement. Never
remove the top cover of the unit without ESD protection. There are no user replaceable parts or
service items under the top cover of the ELT.
7.7 Battery Disposal
Always use caution when disposing of batteries. Check with your local waste management authority for
their guidelines.
NEVER BURY OR BURN OLD ELECTRONICS OR BATTERIES
7.8 Verification of Digital Message
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