As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERSION FOR A BATTERY CHARGER PROBLEM WHICH OCCURRED OUT OF ICT EN ROUTE TO ILN. AIRCRAFT DIVERTED TO MCI. BATTERY CHARGER INDICATED CONSTANT CHARGE IN CLIMB GREATER THAN 40 AMPS FOR MORE THAN 2 MINUTES. REMOVED AND REPLACED BATTERY CHARGER AND BOTH BATTERIES. CHECKED TEMP SENSOR 197 OHMS. FOUND TO BE GOOD IAW DC-9 AMM 24-30-02-2.