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Oz Charge GRUNT Series Workshop Charger Owner’s Manual - V1.0 08/16
OZ CHARGE GRUNT SERIES – WORKSHOP BATTERY CHARGER
CONTROL LAMPS & ERROR DESCRIPTIONS
The control lamps on the top of the charger indicate different operating and error statuses:
Orange LEDs indicate the selected charger function
Green LEDs indicate that the battery has finished charging
The red LED indicates an error
LED
STATUS
DESCRIPTION
ACTION
Blinking
Charger setting for this
LED has been selected
Alternate blinking
Incorrect battery voltage
has been selected
Set the correct battery
voltage (see page 6)
Steady light, orange dimmed
Charging program has
been selected, but no
battery is connected
Connect battery or set
power supply function
Alternate blinking
Final stages of charging:
Battery >90% Charged.
This stage goes for 2
hours.
Steady light
Battery is fully charged
Battery can be
disconnected and used
CHARGING PROCESS
Batteries are charged fully automatically, monitored by a micro-processor with a three-stage (four-stage for
Standard Type batteries) charge characteristic for optimum and gentle treatment of the batteries. After connecting
the battery to the PWC, the charging parameters for the battery can be adjusted by selecting the type of battery
(Standard or Gel/AGM). For the OC-W122470P model, you can select these battery type for 12V or 24V. Please
ensure you’ve selected the correct charge output to suit your application.
Bulk Charge - Charging with constant current (Orange LED lights up)
The maximum charging current is used to charge the battery, depending on its charged status, so as to store as much energy as
quickly as possible in the battery. If a battery that has been totally discharged is attached to the charger, the charger will start
charging with reduced energy to avoid damaging the battery. Once the main charging voltage has been reached 14.4V (28.8V)
to 14.7V (29.4V) , depending on the type of battery, the charger switches to the next charging phase.
Absorption Charge - Charging with constant voltage (Orange LED lights up)
The battery becomes fully charged in this phase. Voltage is maintained at 14.4V (28.8V) (when set to Gel/AGM) or 14.7V
(29.4V) (when set to Standard). As the charge increases, the current continuously decreases and approaches a lower limit that
depends on the type and size of the battery. As soon as it drops below this value or exceeds the set minimum charging period
the charger switches to Float mode (or Equalisation Charge if the Standard battery type is selected).
Equalisation Charge – Restores full capacity (Orange LED lights up) - Standard setting only (Wet / Calcium SMF)
A well proven process that carefully overcharges the battery to restore its full capacity. The Equalisation stage occurs
for Standard Battery type selection only. During this stage, the voltage will be maintained at 15.5V (31V) for around
2 hours before switching to Float mode.
