6-32 ELECTRICAL SYSTEM / TROUBLESHOOTING
ICON A5 / MAINTENANCE MANUAL CHANGE C2
RELATED INFORMATION:
"Condition and 100-Hour Inspection—Operational Inspection" on page 3-25
"Removal and Installation of Inspection Panels and Fairings" on page 3-34
6.3.2 Battery Diagnostic
Table 6-1should be used to diagnose the aircraft 12 V battery once it has been established that it is the
source of a problem. See “Annunciator Panel Diagnostic” on page 13-9.
Tab l e 6 -1: Battery Diagnostic Table
Symptom Possible Cause Remedy
Battery voltage below 12.5
VDC.
Battery discharged. Perform capacity test (1).
Boost-charge battery. See
“Charge Battery” on page
6-38.
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.
Replace battery. See “Battery
Removal and Installation” on
page 6-37.
Needs conditioning. See Section 8: Conditioning
Charge Procedure (1).
Battery does not hold charge. Battery beyond serviceable Replace battery. See “Battery
Removal and Installation” on
page 6-37.
Battery temperature is greater
than 55°C/130°F during
charging.
Battery beyond serviceable
life.
Replace battery. See “Battery
Removal and Installation” on
page 6-37.
Battery voltage is 12.6 VDC or
above but the battery is four
years old and is not capacity
tested.
N/A Recommended to replace
battery. See “Battery Removal
and Installation” on page 6-37.
Source: (1) Concord document no.5-0171 Rev P.
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