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Battery Voltage (Open
Circuit Voltage, OCV)
<24V
24V-25.5V
> 25.5V
6.2.3 Allow the battery to rest for 1 hour before starting the discharge test.
6.2.4 The battery should be discharged at the one hour rate (see Table 3, Appendix A)
to an end voltage of 1.67 volts per cell or 20 volts (per IEC 60952-1). Measure
the time. The battery must achieve at least 85% of the rated time (or 51 minutes
at the 1 hour rate).
If the first discharge time is less than 51 minutes, condition charge the battery per
Section 6.3 and repeat the discharge test. This conditioning charge may be
repeated once more, if needed, to ensure capacity is better than 85%.
6.2.5 If the second discharge fails to deliver at least 51 minutes, the battery should be
rejected. Call Gill Technical Support for further details.
6.2.6 Once the battery has passed all required inspections and after it is fully
recharged using constant-voltage charging methods, the battery is ready for
installation.
6.3
RECONDITIONING BATTERY
6.3.1 Discharge the battery at the one hour rate, to the end voltage of 20V. If the
battery is already below this voltage, skip this step.
6.3.2 Charge the battery at constant potential of 28.6V± 0.4V until the charge rate
drops to 1A, followed by a constant current charge at 1A for 12 hours.
6.3.3 Repeat the discharge test per Section 6.2.4, followed by a recharge per Section
6.3.2
Q01-4000
COMPONENT MAINTENANCE MANUAL
Table 2
CHARGING PROCESS
Discharge the battery at the one-hour rate to 20V. Recharge at
constant potential (CP) of 28.2 to 29 volts until the charge rate
drops to 1A. Then charge at constant current (CC) of 1A for 12
hours.
Discharge at one-hour rate to 20V (see Appendix A) – then
recharge at constant potential of 28.2 volts to 29 volts until
charge current drops equal to or less than 0.5A.
Charge at constant potential of 28.2 volts to 29 volts until
charge rate (current) is equal to or less than 0.5A
Rev G
Page 13 of 28
Process
Teledyne Battery Products
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