As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING REINSTALLATION OF THE PS855A EMERGENCY BATTERY, WENT TO RESET THE 25A CIRCUIT BREAKER AND THE BREAKER BUTTON PUSHED INTO THE CASE. DISCOVERED THAT THE NECK ON THE BREAKER WAS BROKEN, WHICH CAUSES THE BODY OF THE BREAKER TO PUSH IN FURTHER RATHER THAN RESET.