Specifications

MARATHONNORCO AEROSPACE, INC.
NICKEL-CADMIUM AIRCRAFT BATTERIES
24-34-00
Page 101
APR 15/06
1.0 INSPECTION
1.1 Delivery Inspection
When the battery is unpacked, a thorough inspection should be made to ensure that no damage
occurred during shipment. Inspect the shipping container as well as the battery. Before putting the
battery into service, check the following points carefully.
1.1.1 Damage
See if any liquid has spilled into the shipping container. This may be a sign of a damaged cell.
Check for dented battery container. Check for cracked cell cases or covers. Do not place a
damaged battery into service. Report any signs of improper handling to the shipping
company.
1.1.2
Shorting straps
Some batteries are shipped with shorting devices across the main power receptacle output
terminals. Before subjecting battery to electrical service this device must be removed
1.1.3 Electrical connections
Test all terminal hardware to ensure tightness. If necessary re-torque them to the proper value.
Poor electrical contact between mating surfaces may reduce discharge voltage, cause local
overheating and damage the battery.
1.14
Liquid level - Do not add water to a battery except near the end of a constant
current charge. Some exceptions may be noted later.
Addition of water, except at the proper time during the charge will cause spewing of electrolyte to
take place during the subsequent charge. MarathonNorco batteries are shipped with the proper
amounts of electrolyte. When a battery has been discharged or allowed to stand for a long period
of time, the electrolyte becomes absorbed into the plates. Since the battery has been shipped in a
discharged condition, the liquid level of the cells may appear to be low. Charging the battery will
cause the liquid level of the individual cells to rise to the proper operating level. If this does not
happen, add sufficient distilled or demineralized water (using the proper syringe and nozzle) to the
cells during the last 15 minutes of the topping charge, until the correct liquid level is reached.
BEFORE CHARGING THE BATTERY READ AND BECOME FAMILIAR WITH THE CHARGE
PROCEDURE.