Technical data

Document No. 5-0324 Rev C
Page 3 of 21
SAFETY SUMMARY
A. WARNING: LOW CAPACITY HAZARD. Aircraft batteries are certified to
have a certain minimum capacity for emergency operations in the event of a
electrical generator system failure. Never use a battery that has less than
80% of rated capacity and never “jump start” an aircraft that has a “dead” or
discharged battery.
B. WARNING: ELECTRIC BURN HAZARD. Lead-acid batteries are capable of
delivering high currents if the terminals are shorted. The resulting heat can
cause severe burns and is a potential fire hazard. Take the following
precautions:
 Do not place tools or metal objects across battery terminals.
 Do not wear conductive rings, belt buckles, watches or other jewelry when
servicing batteries.
 Wear insulated gloves and use insulated tools when servicing batteries.
 Install battery terminal protectors whenever the battery is not connected in
the aircraft or to the test equipment.
C. WARNING: DANGER OF EXPLODING BATTERIES. Lead-acid batteries
can produce explosive mixtures of hydrogen and oxygen while on charge or
discharge, which can explode if ignited. Take the following precautions:
 Never install batteries in an airtight or sealed enclosure and make sure
installation is adequately ventilated.
 Do not smoke, use an open flame, or cause sparking near a battery.
 Wear proper eye and face protection when servicing batteries.
 Make sure work area is well ventilated.
 Do not constant current charge a battery when installed in an aircraft.
 Connect cables securely to the battery terminals to avoid arcing.
D. WARNING: DANGER OF CHEMICAL BURNS. Lead-acid batteries contain
sulfuric acid which can cause severe burns to body tissue. Take the following
precautions:
 Never remove or damage vent valves.
 Avoid contact of the electrolyte with skin, eyes or clothing.
 Do not touch eyes after touching battery.
 In the event of acid in the eyes, flush thoroughly with clean cool water for
several minutes and get professional medical attention immediately.
 Refer to battery MSDS for additional information.
E. CAUTION: DANGER OF EQUIPMENT DAMAGE. To prevent damage to the
connector, arc burns, or explosion, batteries should never be connected or
disconnected while being charged or discharged. Batteries must be
connected or disconnected only when the circuit is open. Ensure the aircraft
battery switch, external power source, or the charger/analyzer is in the AOFF@
position before connecting or disconnecting the battery. Battery terminal
protectors should be installed whenever the battery is not connected in the
aircraft or to the test equipment.