27
12. Discharge the 24 V battery at I
1
to 20 V. (pay particular attention to
previously marked cell in step 8).
Requirement: The voltage of each cell after 48 minutes must be equal
/ greater than 1.0V.
Note: If the discharge at the I
1
rate is not feasible, select a different
rate and criteria from the table below.
Record the cell voltages at the corresponding time indicated in column
2 in the log book.
If the requirement is not met, then continue with Task 8.1,
“Reconditioning.”
13. Continue discharge at 0.1*
1
to an average of 0.5 volt per cell.
14. Tighten all vents.
15. Disassembly.
ATTENTION: Do not loose the lower nuts of the cell terminals.
15.1 Undo and remove the upper pole nuts
15.2 Remove washers, and intercell links
15.3 Remove the thermostat assembly from cells, if any
15.4 Identify cell positioning within the case
15.5 Remove all the cells from the case starting with the middle
cell of each row using the appropriate insulated cell puller.
15.6 Remove insulating material from the case, also noting
their positions
15.7 Undo the thermostat connectors and remove the harness in
one-piece from the battery case
15.8 Remove the main connector, only if defective.
16. Carry out battery cleaning in accordance with Task 8.6.
17. Inspection and check.
17.1 Check the disassembled upper pole nuts, washers, and
intercell links for signs of damage and corrosion.
Replace as necessary in accordance with Task 10.2.
17.2 Check the cells for thermal damage and discolouration. Replace as necessary in accordance with Task 10.7.
17.3 Check the cable assembly with thermostats / thermistors
(if any) for signs of damage
17.4 Test the thermostat and thermistor functions as detailed
under Task 8.7.
Replace the assembly as necessary in accordance with Task 10.4.
Replace as necessary in accordance with Task 10.4.
Discharge current rate Time (min) cell voltage
reading
Voltage requirement
for cells (V)
0.2*I
1
240 ≥1.0
0.4*I
1
120 ≥1.0
0.6*I
1
80 ≥1.0
0.8*I
1
60 ≥1.0
I
1
48 ≥1.0
The document reference is online, please check the correspondence between the online documentation and the printed version.
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