As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALL LIGHTS RELATED TO EMERGENCY BATTERY PACK M2235 FAIL TEST ALL LIGHTS RELATED TO EMERGENCY BATTERY PACK M2335 FAIL TEST<[01] REMOVED; REPLACED AND PERFORMED GOOD TEST OF BATTERY PACK M2335 PER AMM 33-51-06-960-805;[02] VERIFIED CORRECTIVE ACTION 1.