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Aborted Charge (Models OMAX-40AS-3B, OMAX-50AS-3B)
If charging cannot be completed normally, charging will abort. When charging aborts, the
charger’s output is shut off, only the CHECK LED for that bank will blink and the digital
display will show 8.8.8 and blink on and off (at opposite times). In that state, the charger
ignores all buttons. To reset after an aborted charge without affecting the other banks,
disconnect the clips for the aborted bank from the battery.
Desulfation Mode
If the battery is left discharge for an extended period of time, it could become sulfated
and not accept a normal charge. If the charger detects a sulfated battery, the charger
will switch to a special mode of operation designed for such batteries. Activation of the
special desulfation mode is indicated by the CHARGING LED blinking. If successful,
normal charging will resume after the battery is desulfated. The CHARGING LED will
then stop blinking and light continuously. Desulfation could take up to 10 hours. If
desulfation fails, charging will abort and the CHECK LED will blink.
Completion of Charge
Charge completion is indicated by the CHARGED LED. When lit, the charger has
switched to the Maintain Mode of operation.
Maintain Mode (Float-Mode Monitoring)
When the CHARGED LED is lit, the charger has started Maintain Mode. In this mode, the
charger keeps the battery fully charged by delivering a small current when necessary.
NOTE: The maintain mode technology utilized in the Enersys
®
chargers allows you to
safely charge and maintain a healthy battery for extended periods of time. However,
problems with your battery, electrical problems in your vehicle, improper connections
or other unanticipated conditions could cause excessive current draws, as such,
occasionally monitoring your battery and the charging process is recommended.
Using The Battery Voltage Tester
Overview
This battery charger has a built-in voltmeter to test your battery’s state of charge. The
charger does not have a built in load tester. As such, a recently charged battery could have
a temporarily high voltage due to what is known as “surface charge”. The voltage of such
a battery will gradually drop during the period immediately after the charging system is
disengaged. Consequently, the tester could display inconsistent values for such a battery.
For a more accurate reading, the surface charge should be removed by temporarily creating
a load on the battery, such as by turning on lights or other accessories.
Testing Sequence: There are three basic steps required to test the battery state of charge:
1. With the charger unplugged from the AC outlet, connect the charger to the battery
following the instructions given in Sections 6 and 7.
2. Plug the charger AC power cord into the AC outlet.
3. Read the voltage on the digital display or press the display mode button to set the
tester to BATTERY % to read the voltage as a percent of charge (on the OMAX-6A-1B
read the six Status LEDs).
Tester and Charger: When rst turned on, the unit operates only as a tester, not as
a charger. To continue to use it only as a tester, avoid pressing the CHARGE button
(OUTPUT button on the OMAX-50A-1B and BANK button on the OMAX-40AS-3B and
OMAX-50AS-3B).
Power-Up Idle Time Limit: If no button is pressed within 10 minutes after the battery
charger is rst powered up, the charger will automatically switch from tester to charger,
if a battery is connected (the same applies to each bank of the OMAX-40AS-3B and
OMAX-50AS-3B).
Tester Without Time Limit: If the DISPLAY button is pressed within the rst 10 minutes
after the battery charger is powered up, the unit will remain a tester (not a charger)
indenitely, unless the charge button is pressed (OUTPUT button on the OMAX-50A-1B
and BANK button on the OMAX-40AS-3B and OMAX-50AS-3B).
Testing After Charging: After the unit has been changed from tester to charger (by
pressing the CHARGE or OUTPUT button), it remains a charger. To change the battery
charger back to a tester, press the CHARGE or OUTPUT button again (the same applies
to each bank of the OMAX-40AS-3B and OMAX-50AS-3B).
