As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE FLT 3073 THE CREW REPORTED A ELECTRICAL EMERGENCY ABNORMAL MESSAGE IN FLIGHT. THE AIRCRAFT RETURNED TO CLE AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE NR 1 AND NR 2 BATTERY SWITCHES (S7125,S7126) AND THE ESS POWER PUSH BUTTON SWITCH AND RELAY KO097. OPERATIONAL CHECKS WERE GOOD.