Normal charge cycle expected.
The Charger first checks the battery's condition , this is indicated by the repair l.e.d. being on , if the battery
is ok and within safe charging parameters the repair L.E.D goes off and the charger enters into "Fast charge
Mode' and finally to the Full / float mode and the battery should be fully charged.
Charging Stages
Bulk :
This charges the battery up to about 80% full.
The charger delivers a constant current of 5 amps ( 2.2A for 24 v ) cycle until the battery voltage rises to a
pre set value.
Absorption
: the charger then 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 the 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 as a time out saefty precaution in case the
battery is defective.
Float
:Maintenance charging .
ln this mode the charger does not deliver any current when battery voltage is above a set value.( ie if the
battery is full then leave it alone ) if however the 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 ensure that the battery will
not be overcharged and be kept fully charged. The charger can be connected to a battery for months at a
time without over charging it.
Repair Mode and De-sulphate Charging
The de-sulphated charging can re-condition only slightly sulphated battery.
A. ln the case the "Repair mode " indication is on longer, the charger is in de-sulphation mode. After
some time,( up to 8 hrs in worst case ) if the de-sulphation is successful, the charger will switch to the
normal charging cycle and the "Check Mode" is extinguished.
B. lf the de-sulphated charge fails to recondition the battery after some time, the "Check Mode" blinks.
The unit is unable to charge this battery and it should be replaced.
Repair Mode and chargeable battery
A. lf the Repair 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 check if the
battery is not really suitable for charging.
B. The Repair 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.
Alarms and Faults
The blinking Alarm indicates faulty connections or charge condition and as such the charger does not give
any output power. Once the fault has been corrected the charger will continue to operate normally.
A. Reverse polarity ie the main d/c connection of Positive and Negative terminal are in the wrong order will
cause "Alarm" to blink.
B. Short circuiting the output cable terminals (crocodile clamps or ring connectors)
C. Over Temperature Protection has been activated charging has stopped, when the charger cools down
then it will resume charging operation. the charger software maintains the information to continue its cycle
Interrupting the charging process
When there is a power outage, 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.
