LAMAR CA-1550–CML - Page 22

4. OPERATING GUIDE - DISCHARGING
4.5.1 LEAD-ACID BATTERIES
Always refer to your battery manufacturer's maintenance manual for the most
accurate information. For a 24 volt sealed lead-acid battery the cutoff voltage is
usually set at 18 or 20 volts when discharged one hour at a current equal to the
80% of the battery’s C 1-rate. See Table 4- 2 for examples of discharge test
settings for sealed lead-acid batteries.
Table 4- 2. Discharge test setting for sealed lead-acid batteries
4.5.2 NICKEL-CADMIUM BATTERIES
For nickel-cadmium batteries the cutoff voltage should be 1 volt per cell, when
discharge tested at a current of approximately 80% of the C 1 - rate. For a 24 volt/10
ampere-hour battery with 19 cells, the cutoff voltage would be set to 19 volts when
discharging at 8 amperes (see Table 4- 3).
CA-1550 CHARGER / ANALYZER - OPERATING MANUAL LI-4159-CML Rev A
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