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RND 305-00019
Check Mode and Normal Charging
The Charger fi rst checks the batt ery’s condition, for normal batt ery this indication extinguishes aft er a few
seconds and charger enters into “Charge Mode” and fi nally to the “Float/maintenance Mode” when the
batt ery is fully charged
.
Charging Stages
Bulk:
This charges the batt ery up to about 80% full.
The charger delivers max 5A current for Car and Low temperature mode, 1.5A for Motor Bike Mode until
the batt ery voltage rises to a set value. There is a thermal control in gradual decrease of charging current
at high operation temperature for the Car and Low Temperature Mode.
Absorption:
PWM charges to 100%. The terminal voltage is kept constant at set level. Batt ery charger
delivers current pulses to the batt ery in varying pulse periods. When the rise time of pulses decreases to a
set value, charger switches to Float Mode. The maximum total charging time of Bulk and Absorption is 40
hours at which the charger will shut down.
Float:
PWM maintenance charging and cycle charging
In this mode the charger does not deliver current when batt ery voltage is above a set voltage. When bat-
tery voltage drops below the set voltage, charger will deliver small current until the batt ery voltage rises to
about 13.5V. Then the maintenance charging cycle repeats.
In the case of batt ery voltage drops more than 12.2V due to external load or otherwise, the charger will
start a new charging cycle of Bulk, Absorption and Float.
Check Mode and Desulphate Charging
The desulphate charging can recondition only slightly sulphated batt ery.
A. In the case the “Check Mode” indication is lit longer, the charger is in desulphate charging. Aft er some
time, if desulphation of the batt ery is successful, the charger will switch to normal charging and the
“Check Mode” is extinguished.
B. If the desulphate charge fails to recondition the batt ery aft er some time, the “Check Mode” blinks. The
batt ery should be replaced.
The maximum desulphate charging time is 8 hours.
Check Mode and Unchargeable batt ery
A. If the Check Mode blinks before or aft er pressing the Mode butt on then the batt ery is not suitable for
charging. Check the batt ery connections, clean batt ery terminals to double confi rm if the batt ery is not
really suitable for charging.
B. The Check Mode also blinks aft er 40 hours in Bulk and or Absorption Stage charging until batt ery is
removed. This safety time feature is to avoid charging faulty batt ery which cannot hold charge.
Alarm and Faults
The blinking Alarm indicates faulty connections or charge condition so that charger does not give any
output power. Once the fault has been corrected charger will continue to operate normally.
A. Wrong connection of Positive and Negative terminal will cause “Alarm” to blink.
B. Shorting the output cable terminals (crocodile clamps or ring connectors)
C. Over Temperature Protection has been activated charging has stopped.
Interrupting the charging process
When there is a power outage, the batt ery charger will resume charging at its last selected Charging Mode
(motorcycle, car, Low Temp.) upon the return of mains AC power.
The charger automatically completes the charging process when the charging end voltage is reached and
switches to fl oat / maintenance charge mode.
