ENERSYS Ltd, NEWPORT
COMPONENT MAINTENANCE MANUAL
LEARJET PART NO.7624308001-003
ELN PART NO.9750R0824-Rev04
E.
Charging
Procedures
Charging of the battery can be either constant current or constant voltage
depending on the charging equipment available.
NOTE:
Charging should be conducted between 20°C (68°F) and 30°C
(86°F). The battery capacity may vary if charged outside this
recommended temperature range.
(1)
Constant
Current
Constant current chargers must be capable of applying a voltage of
40.0 volts or more.
Charge at 0.8 Amps for the times given in Figure 7 below.
Record the open circuit voltage prior to commencement of battery
charge. After 30 minutes of charge measure and record battery on
charge voltage. If the on charge voltage is greater than 29 volts and
the open circuit voltage at the start was less than or equal to 25 volts,
STOP the charge and reject the battery.
NOTE:
It is normal for the voltage to rise as high as 35 volts as
the gas recombination process starts and then to decline to 31 volts or
less.
Battery Open-circuit Voltage
Time (Hours)
25.5 3.0
25.2 5.5
24.8 8.0
24.6 9.5
24.2 13.0
24.0 14.5
<24.0 16.0
Constant
Current
Charging
Figure
7
Page 105
24-01-03
Apr 21/99
