Check Mode and Normal Charging
The Charger first checks the battery’s condition , for normal battery this indication extinguishes after a
few seconds and charger enters into “Charge Mode” and finally to the “Float/maintenance Mode”
when the battery is fully charged.
Charging Stages
Bulk :
This charges the battery up to about 80% full.
The charger delivers a constant current of 5A for 4 minute and 2.5A for 6 minute cycle until the
battery voltage rises to a set value.
Absorption :
PWM charges to 100%. The terminal voltage is kept constant at set level. Charger
deliver current pulses to battery varying pulse period. When the rise time of pulses decreases to a set
value, charger switches to Float (maintenance) mode. The maximum total charging time of Bulk and
Absorption is 40 hours at which the charger will shut down.
Float
:
PWM maintenance charging .
In this mode the charger does not deliver current when battery voltage is above a set value. When
battery voltage drops below the set value, it receives pulses of current until the terminal voltage rises
to the set float value.
This is to assure that the battery will not be overcharged and be kept filled up when the its voltage
drops due to self discharge or other light loading.
The charger can be connected to a battery for months at a time without over charging it.
Check Mode and Desulphate Charging
The desulphate charging can recondition only slightly sulphated battery.
A. In the case the “Check Mode” indication is lit longer, the charger is in desulphate charging. After
some time, if desulphation of the battery is successful, the charger will switch to normal charging
and the “Check Mode” is extinguished.
B. If the desulphate charge fails to recondition the battery after some time, the “Check Mode” blinks.
The battery should be replaced.
The maximum desulphate charging time is 8 hours.
Check Mode and Unchargeable battery
A. If the Check Mode blinks before or after pressing the Mode button then the battery is not suitable
for charging. Check the battery connections, clean battery terminals to double confirm if the
battery is not really suitable for charging.
B. The Check Mode also blinks after 40 hours in Bulk and or Absorption Stage charging until battery
is removed. This safety time feature is to avoid charging faulty battery 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 Positve 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 outrage, the charger will continue to charge at its last selected Charging Mode
on the return of mains AC power.
The charger automatically completes the charging process when the charging end voltage is reached
and switches to float / maintenance charge mode.