What was found
EMERGENCY LIGHT BATTERY PACK, NOT HOLDING CHARGE PERFORMED QRH CHARGE PROCEDURE TWICE CORRECTIVE ACTION: REMOVED LT AFT EMERGENCY BATTERY DUE TO NOT HOLDING CHARGE AND INSTALLED NEW EMERGENCY BATTERY. REMOVED RT AFT EMERGENCY BATTERY. DUE TO NOT HOLDING CHARGE AND INSTALLED NEW EMERGENCY BATTERY. REMOVED LT FWD EMERGENCY BATTERY DUE TO NOT HOLDING CHARGE AND INSTALLED NEW EMERGENCY BATTERY . REMOVED RT FWD EMERGENCY BATTERY DUE TO NOT HOLDING CHARGE AND INSTALLED NEW EMERGENCY BATTERY. PERFORMED OPERATIONAL CHECKS, OPS CHECKS SATISFACTORY. WORK PERFORMED IAW AMM 33-50-05 AND 33-50-07.