As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX - EEL - DURING OVERNIGHT MAINTENANCE DISCOVERED THE LEFT FORWARD CABIN EPSU BATTERY PACK HAD -LOW CHARGE-. MAINTENANCE REMOVED AND REPLACED THE LEFT FORWARD CABIN EPSU BATTERY PACK IAW AMERICA WEST AIRLINES TASK CARD A1C33302. OPERATIONAL CHECKS WERE GOOD.