As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING UNSCHEDULED MAINTENANCE INSPECTION FOUND THE ELT BATTERY REQUIRES REPLACEMENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE ELT BATTERY IAW EMB145 AMM CHAPTER 25-61-04. NEW BATTERY EXPIRATION DATE IS APR/2018. THE BATTERY CHECK WAS GOOD IAW WC#: 25-700-07. THE AIRCRAFT WAS RETURNED TO SERVICE.