Electrolyte Level Adjustment - Saft 4579 Component Maintenance Manual With Illustrated Parts List

COMPONENT MAINTENANCE MANUAL
NOTE:
NOTE:
(1) Completely discharge the battery to 0 volts:
a
b
(2) Charge the battery at 4.5A for 10-12 hours per Figure 104.
(3) Overcharge the battery at 4.5A for an additional 4 hours. Total charge time
will be approximately 18-20 hours.
(4) Monitor individual cell voltages each 15-20 minutes during additional
overcharge and record OCV (Open Circuit Voltage) readings.
(5) Note any cells that express a drop in voltage during overcharge and mark those
cells for replacement.
NOTE:
(6) Replace marked cells (if required)(DISASSEMBLY, ASSEMBLY).
(7) Return to ( * ) re-entry point in Figure 102.
I.

Electrolyte Level Adjustment

This procedure is to be carried out during overcharge at 4.5 amps during the last 15
minutes of charge cycle.
SAFT AMERICA INC.
4579
Except for batteries from long term storage, it is recommended that if a
battery requires Special Testing more than 3 times that the battery be
replaced.
For a battery from long term storage, several complete
charge/discharge cycles may be required to restore performance.
Discharge the battery to 1 volt using one of the rates and times listed in
Fig 103.
Continue to discharge the battery to 0 volts using one of the methods
found in the section entitled "Residual Discharge".
A drop in voltage during overcharge indicates a defect in the
gas barrier which is not recoverable nor repairable. Cells with
this condition must be replaced (DISASSEMBLY,
ASSEMBLY).
24-31-05
PAGE 109
Jan 30/98