A-A-51356
If the battery is left in the charger for extended periods of time the main 1C charge shall terminate upon full charge and a .1C maintenance charge shall begin.
The charger shall be capable of delivering 1 ± 0.05 amperes average to a zero impedance load. This shall be a continuous for loads displaying a voltage drop between 10 and 17 volts.
Voltages below ten volts shall require a minimum of two minutes delivery.
The charge circuit shall be capable of continuous delivery of 100 ± 35 milliampere into a zero impedance load. Capability shall be continuous for all loads from 0 to 17 volts.
At several points in the algorithm a check shall be made on the absolute battery pack voltage level. If it does not agree with expected levels the charger enters a problem mode in which the charger turns off and prompts the operator.
If the battery is left in the charger for extended periods of time the topping charge shall assume a duty cycle.
BATTERY DISCHARGING AND BATTERY CAPACITY EVALUATION
The battery discharger shall be an integral part of the battery charging device. The unit shall have the capability of discharging a battery to a 1 volt per cell level to minimize the formation of “memory”. The battery will then automatically be recharged. The unit shall indicate the battery capacity following a discharge cycle. The battery discharger circuit shall be provided for one battery at a time. The command discharge rate shall be 1 ± 0.04 amperes. Depression of the discharge key shall cause the appropriate battery to enter a discharge cycle in which the battery capacity is calculated. Automatic display of the percent battery shall occur after the recharge cycle following the discharge of the battery. At this point a timed 1 ampere discharge of the battery shall take place. A fully charged battery pak shall be discharged is 1 hour.
DEFIBRILLATOR ENERGY EVALUATION
The unit will provide a defibrillator test load for routine testing purposes. Accuracy will be within ±5 percent.
An operator shall specify the expected defibrillation energy by scrolling the number in the display. Upon receiving a defibrillation waveform the battery charge calculates the energy level. If the energy was within ±10 percent of the scrolled-in energy, a cue shall illuminate beside the scrolled-in value. Otherwise the actual energy is displayed.
A means in which the percent battery capacity and defibrillator energy may alternately be accessed on the display is also included.
ELECTRICAL CHARACTERISTICS - - The system shall be operable from 115 vac 50/60 Hz or 230 vac 50/60 Hz.
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