What was found
MAIN BATTERY SHOWS 1 AMP TO 2 AMP CHARGE THROUGHOUT FLIGHT -27 VOLTS. ACFT GROUNDED. R & R MAIN BATTERY AND AUX BATTERY, REF MM 24-31-11. OPS CHECK FAIL- ONCE CHARGED MAIN BATTERY VOLTS DROPPED TO 26V AND NEG 2 AMP DISCHARGE, THEN RETURNED TO 31V AND 2A CHARGE, REF WDM 24-31-11. INSPECTED GROUND GD3252-DC, D10328, CONNECTOR D44, GROUND IS GOOD, RESISTANCE CHECKS GOOD. VISUALLY INSPECTED J9 AREA C/B'S : C1212, C1340, C142, C1341. NO DEFECTS NOTED. AS A PRECAUTION REPLACED P5-13 ELECTRIC METER, BATTERY AND GALLEY POWER MODULE. REF AMM 24-21-53-401. REPLACED SPCU REF AMM 24-34-11. OPS TEST NORMAL. NO DEFECTS NOTED. GROUND VERIFICATION SUCCESSFUL.