RECORD KEEPING
CONT.
Upon completion of the acceptance test, the battery system
should be placed on float charge at 2.25 volts per cell to
restore the battery to its’ rated capacity.
Batteries should not require an equalization charge once
they have passed their initial acceptance test. Consult with
East Penn Reserve Power’s Product Support group before
performing additional equalizing charges on batteries that
have successfully passed their initial acceptance test.
MAINTENANCE
Always wear eye protection when working on or near batteries.
Keep sparks and open flames away from batteries at all times.
Review Safety Precautions on pg. 1.
The following values should be recorded using the "Battery
Maintenance Report" found in the back of this manual.
Annual Inspection
(1)
1. Conduct a visual inspection of each cell.
2. Record the battery string voltage.
3. Record the charger voltage.
4. Record the individual cell voltages. The accuracy of the
DMM (Digital Multimeter) must be .05% (on dc scale) or
better. The DMM must be calibrated to NIST traceable
standards. Because float readings are affected by
discharge and recharges, these readings must be taken
when batteries have been on continuous, uninterrupted
float for at least one month. Cells should be within ± 0.05
volts of the average cell float voltage.
5. Record the ambient temperatures.
6. Record individual cell Ohmic readings.
7. Record all intercell, interunit and terminal connection
resistances. Micro-ohm readings should be taken during
this inspection. If any reading differs by more than 20%
from initial readings taken, retorque the connection.
Recheck the micro-ohm reading. If the reading remains
high, clean the contact surface according to installation
portion of this manual.
(1)
Other Maintenance Inspection intervals follow
IEEE 1188
Battery Cleaning
Batteries, cabinets, racks, and modules should be cleaned with
clear water or a mixture of baking soda and water or East Penn
mfg. supplied battery cleaner (part # 00321). Use clean water
to remove baking soda residue.
Never use solvents to clean the battery.
16
ACCEPTANCE TESTING
Each cell should be at 100% State of Charge prior to performing
an acceptance test on the battery system. To ensure the cells are
fully charged the following charge schedule should be followed.
Cells should be charged at the equalization rate of 2.40 volts per
cell for 24 hours. Temperature compensated charging parame-
ters shall be applied as detailed in “Temperature Compensation”
in Appendix B of this manual.
To ensure the cells are fully charged within 24hrs; the charger
used for this charge must have the current equal to the
maximum charge current for the given cell type (model), as
called out in the below chart.
Cell
Type
Max. Charge
Current (A)
Min. Charge
Current (A)**
HT125-33
352
106
** - Using minimum charge current will extend recharge
time and increase risk of battery being undercharged.
If these requirements cannot be met, contact East Penn Reserve
Power’s Product Support group for alternate
instructions.
Upon completion, the charge voltage should be lowered to the
float voltage of 2.25 volts per cell for a minimum period of 72
hours. Reference: IEEE 1188-2005 Section 7.2 for additional
acceptance test requirements.
Upon completion of the above charge, the desired acceptance
test can be performed.
NOTE: There shall be no discharges of any duration
between the start of the equalization and the completion
of the float period. If a discharge does occur, the charging
regime detailed above shall be repeated.
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