As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STATUS MSG MAIN BAT. CHGR. ON EICAS DISPLAY. AIRCRAFT RETURNED TO BLOCK AND WAS GROUNDED BY MAINTENANCE. MAINTENANCE INSPECTED AND CLEANED DC GROUND TERMINAL M10212 IAW B767 WDM 24-34-11. OPS CHECK GOOD AT THIS TIME. NO PRESENT MESSAGES. AIRCRAFT RETURNED TO SERVICE.