ICON A5 MM : Electrical System : Troubleshooting : Battery Diagnostic
Battery Diagnostic
100058-00
Table 7 should be used to diagnose the aircraft 12 V battery once it has been established that it is the source of a problem. Annunciator Panel Diagnostic
Table 7. Battery Diagnostic Table
Symptom
Possible Cause
Remedy
Battery voltage below 12.5 VDC.
Battery discharged.
Perform capacity test (1). Boost-charge battery. Charge Battery
Battery voltage is 0 VDC
Battery charging fuse blown.
Replace 15A fuse located forward of the positive charging terminal, on the positive charging wire.
Battery capacity below 85% of rating (below 20.4 AH)
Battery beyond serviceable life.
Needs conditioning.
See the Conditioning Charge Procedure.1
Battery does not hold charge.
Battery beyond serviceable
Battery temperature is greater than 55°C/130°F during charging.
Battery beyond serviceable life.
Battery voltage is 12.6 VDC or above but the battery is four years old and is not capacity tested.
N/A
1 Concorde Battery Corporation; Component Maintenance Manual RG® Series Main Aircraft Battery, Document Number 5-0171, Most Recent Version