As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SCHEDULED BATTERY INSPECTION, FOUND 2 BATTERY CELLS LEAKING. ELT WAS REPLACED 242.2 HOURS PREVIOUS FOR SAME PROBLEM. THIS IS THE 6TH ELT TO BE REPLACED BY THIS OPERATOR ON A 2 AIRCRAFT FLEET. TWO PREVIOUS MALFUNCTION/DEFECT REPORTS LISTED CRACKED ELT CASES DUE TO SEVERE LEAKAGE AND RUPTURE OF CASE.