As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEFECTIVE BATTERY PACK M6759, BEHIND THE KICK PANEL, BELOW THE 4TH WINDOW AFT OF THE 2ND AIR COND RISER (L SIDE). STA 841 WL 204 LBL 95 (NEXT TO SEAT 20A IN CURRENT CABIN CONFIG). BATTERY PACK REMOVED PER AMM 33-51-07. BATTERY PACK AND POWER SUPPLY REMOVED AND REPLACED IAW AMM 33-51-07 OPS NOW NORMAL. ACPD IDT INSPECTION REF GMM 09-25-05 AND AMM 33-51-07 AND ALL OK.