Smartech STC1 Manual page 6

STEP 3B – CONNECT TO BATTERY IN VEHICLE
Before connecting, determine if the vehicle is Negatively (-) or Positively (+) earthed. Negative earthed vehicles are most
common and use the chassis as an earth by connecting the battery negative terminal to a conductive chassis point.
If you are unsure, please seek advice from a qualified person before connecting.
Negatively Earthed
Connect the RED lead (battery clip) from the charger to the Positive (+) battery terminal. Connect the BLACK
lead (battery clip) from the charger to the vehicle's chassis away from the fuel line or moving parts. Always
ensure a good connection is made.
Positively Earthed
Connect the BLACK lead (battery clip) from the charger to the Negative (-) battery terminal.
Connect the RED lead (battery clip) from the charger to the vehicle's chassis away from the fuel line or moving
parts. Always ensure a good connection is made.
STEP 4 – SET MODE
The mode should be set according to the type and voltage of the battery. To set, press the MODE button repeatedly
until desired mode is displayed.
To use 6V NORM mode you will need to press and hold the MODE button until the 6V NORM mode LED lights up.
STEP 5 – CHARGING
During the charging process, the LED will show the mode selected and the state of charge. LEDs will slowly flash on
the current charge percentage to indicate charging is still in process. When the charging process is complete all white
percentage LEDs will remain on. IN this state the charger will remain in float mode until the battery clamps are
disconnected. When the clamps are disconnected it will return to Standby mode. If there is an error in charging, then
the fault LED will light up.
STEP 6 – DISCONNECTION
Ensure the 240V mains switch is turned off and the charger is disconnected from the 240V mains power before
disconnecting clamps from the battery.
FAULTS & ERRORS
The Smartech chargers sophisticated smart MCU will determine multiple issues with the charging process or the battery.
If a fault is recognized the charger will display a series of blink sequences that help you identify the cause of the error
and potential solutions. All Error Conditions are displayed with the Error LED and Standby LED flashing back and forth.
The number of flashes between each pulse denotes a potential Error Condition. See the table below for more
information.
RED FAULT
LED
One constant Reverse connection or bad connection of the
Flash clips
Double
AC output short circuit
constant flash
Triple constant
Over Temperature protection
flash
Solid red LED Faulty Battery or incorrect battery
CAUSE
Check the clips are connected to the correct polarity and have
a good clean contact to the terminal. It may be necessary to
clean the battery terminals to ensure good contact. Make sure
the clips are not touching each other.
Disconnect the charger and check your AC plug for damage. Fix
if necessary/possible.
Stop charging and check and fix connection. Allow charger to
cool down before resuming charge process.
Battery is faulty and may need to be replaced. Have the battery
tested by a qualified person. Or check you have selected the
correct mode for the battery you intend to charge.
Issue 1, 01.01.23
REMEDY
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