COMPONENT MAINTENANCE MANUAL
BA27
24-01-01
This document contains Data controlled by the U.S. Export Administration Regulations. Diversion or use contrary to U.S. law is prohibited
UNOTEU : A dedicated lead acid battery charging room is not required for battery
commissioning. A normal electrical workshop may be used and the
battery can even be commissioned in a Nickel Cadmium battery room
without fear of contamination.
F. Commissioning Procedure
(1) Visually inspect the exterior of the battery casing for signs of damage,
cracks, corrosion, etc.
(2) Examine the battery terminal connector for signs of corrosion, damage
and water/dirt ingress; clean if necessary.
(3) Check open circuit voltage, if the open circuit voltage is greater than or
equal to 25.7 volts, the battery can be fitted to the aircraft.
(4) If the open circuit voltage is greater than or equal to 25.3 volts but
lower than 25.7volts, charge in accordance with paragraph H.
(5) If the open circuit voltage is below 25.3 volts: -
(a) Charge the battery in accordance with paragraph H.
(b) On completion of recharge, allow the battery to stand open
circuit for minimum of 4 hours for the battery voltage to
stabilise.
(c) Carry out a capacity test. Discharge the battery at 5 amps to an
end voltage of 20.0 volts.
Page 12
Aug 10/10
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