10
This manual only covers Constant voltage (CV) charging
because CV charging is the preferred method. Every
effort should be made to charge Hawker® VRLA AGM
batteries with constant voltage. If constant current
charging is the only available option, please contact
EnerSys Technical Support for guidance.
Charging should be performed in the battery work
shop where the ambient temperature is maintained
between 20ºC and 30ºC. The battery/re-blocking kit
can be charged outside this temperature window if a
temperature compensated charger is used.
Charge the battery / re-blocking kit at a constant voltage
of 29.0 volts for an assembled 24V battery or 14.5 volts
for individual monoblocs with a charger capable of
delivering a minimum of 10 amps. Charge time depends
on the rated capacity of the battery and the maximum
current available from the charger.
The higher the available current the faster the battery will
recharge, typical duration values are shown in Figure 4.
Figure 4 - Constant Potential Charging Times
9.
CHARGING PROCEDURE
10.
ROUTINE MAINTENANCE
(Refer to Battery Maintenance Flowchart Appendix C)
10.1
Visually inspect the exterior of the battery casing for signs of damage and cracks. Examine the battery
terminal for signs of damage, corrosion, and water/dirt ingress; clean as necessary. Always ensure that
the battery lid is securely fitted prior to charging.
10.2
Measure and record the OCV using a calibrated digital multi-meter.
10.2.1
If the OCV measures greater than 25.5 volts, test the battery in the “as found” condition and continue
with step 10.3.
10.2.2
If the OCV measures greater than 20.0 volts but less than 25.5 volts, charge the battery per Section
9.0 and continue with step 10.3.
10.2.3
If the OCV measures 20.0 volts or less refer to deep discharge decovery document number 9602-6298
(which is available from EnerSys Technical Support), as the battery is considered to be in a deeply
discharged state.
10.3
Perform a capacity test per Section 12.
10.3.1
If the result of the capacity test is greater than 80% (48 minutes), continue with step 10.4.
10.3.2
If the result of the capacity test is 80% or less, recharge battery per section 9.
10.3.2.1
Repeat the capacity test as per section 12.
10.3.2.1.1
If the battery fails to make 80% capacity after two (2) capacity tests reject the battery per Section 13.
Battery Capacity
Charge Duration (hours)
@ 10 A
@ 20 A
@ 30 A
18 ampere-hour
4
3
2
25 ampere-hour
6
5
4
37 ampere-hour
8
7
6
40 ampere-hour
8
7
6
Содержание HAWKER 9250-0083
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