TM 55-1510-220-MTF
b.
Open volt-loadmeter lead.
c.
Ground fault circuit tripped.
d.
Shorted power wires.
C6. No power indicated with battery master switch ON.
a.
Battery discharged or defective.
b.
Open circuit between battery and master switch.
c.
Master switch defective.
d.
Defective relay.
e.
Keylock switch off.
C7. Power on with master switch in OFF position.
a.
Master switch defective.
b.
Relay contacts failed closed.
C8. Apparent loss of battery capacity.
a.
Electrolyte level too low.
b.
Charging rate too low in aircraft.
c.
Too little usage or shallow discharges.
C9. Complete failure of battery to operate.
a.
Loose or broken lead.
b.
Loose or disengaged terminals in battery.
c.
Battery not charged.
d.
Cell open internally.
C10.
Below normal battery output.
a.
Battery switch left ON.
b.
Voltage regulator set too low.
c.
Internal connection links loose.
d.
External connector burned or pitted.
e.
Defective or reversed cells.
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