As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY BATTERY PACK M2816 DOES NOT HOLD CHARGE<[01] REMOVED; REPLACED AND PERFORMED A GOOD CHECK OF M2816 BATTERY PACK IAW SWA B737 MAX 8 AMM 33-51-06;[02] REMOVED; REPLACED AND PERFORMED A GOOD CHECK OF M2816 BATTERY PACK IAW AMM 33-51-06