Exide Technologies JA5009-00 - Manual (Page 16)

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b. Equalize Adjustment
1. Since the equalize adjustment will not affect the float voltage adjustment and requires a higher
voltage it should always be made after the float voltage is determined. Use a portable voltmeter of one
percent accuracy as in the float adjustment. Set switch (SW1) to “EQUALIZE”. Close the DC (battery)
breaker (CB2). Set the AC breaker (CB1) to "ON".
2. In attempting to set the equalize voltage, one thing must be kept in mind. It will be impossible
to set the equalize voltage if the batteries are in a discharged condition. If fact, they must be at near full-
charge. This is to prevent the charger from going into a current limit condition. Current limit reduces the
charging voltage and no matter if the EQUALIZE potentiometer is increased to a full-clockwise position,
the charger voltage will not increase.
3. Therefore, it is suggested that the batteries be placed on equalize charge for several hours so
that the charger is no longer in current limit. This should be observed using the portable 1% accuracy
voltmeter and the charger panel ammeter. When the charging current falls below the 100% rated value of
charger current, observe the voltage and set carefully for the desired equalize voltage. If, upon
readjustment, the current again goes into current limit wait for the batteries to continue their charge
cycle. Continue this adjustment procedure until the desired voltage is reached and the current is less than
rated current. When the final setting is determined, tighten the lock nut on the EQUALIZE
potentiometer.