As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ANNUAL INSPECTION, ELT D CELL BATTERIES LEAKING ACID. 3 CELLS WERE BAD. BATTERIES SPECIFIED, BASED ON THEIR QUALITY WHEN E-01 ELT DESIGNED. BATTERIES WERE FRESH AND INSTALLED 1 YEAR AGO. ANOTHER OWNER REPORTED SAME PROBLEM. CONTACTS CLEANED AND FRESH BATTERIES INSTALLED. MANUFACTURER SAY QUALITY NO LONGER GOOD. WE NEED AN ACCEPTABLE ALTERNATE BATTERY. SPECIFY PERFORMANCE, NOT A SPECIFIC BRAND.