As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURNBACK. FLIGHT CREW REPORTED BCL1 FAULT. RETURNED TO DEN AND LANDED WITHOUT INCIDENT. REPLACED BATTERY CHARGE LIMITER AT NR 1 POSITION. OPS CHECKED GOOD PER AMM 24-38-34, PAGE 401. ECAM STATUS NORMAL. PERFORMED OVERWEIGHT LANDING AT 140,300 LBS. NO EXCEEDANCES RECORDED.