Troubleshooting Table
Problem
Possible Cause
Solution
Power indicator
light does not
turn on
Cannot select
charging mode
between 6V SLA
and 12V SLA
Charger does not
detect a 12V SLA
battery and
charges as
6V SLA
Charger is not plugged
into the outlet properly
AC outlet is not
supplying power
Charger is normal and will
recharge the car battery.
Make sure the charger is
plugged into the outlet securely.
Turn the switch on if the outlet
is connected to a switch.
Check for open fuse or
circuit breaker.
Battery is over
discharged which
leads to the auto
voltage detection to fail
Select voltage manually by
following the instruction of mode
change. Press and hold “MODE”
button
for 3 seconds.
The 12V SLA indicator will turn on.
6V SLA and 12V
SLA indicators
flash alternately
“ERR” indicator
flashes
Battery clamps are loose
or not connected to the
battery
Fuse on the eyelet terminal
connectors may be blown
Reconnect battery clamps to
the battery.
Replace the fuse with correct
amperage.
Battery clamps are
connected to the wrong
polarity
Charger is connected to
a 24V battery
Disconnect the charger from the
battery. The charger works on 6V
and 12V batteries.
Battery voltage is lower
than 4V
Battery is over-discharged. Replace it
with a new battery.
Battery voltage does not
hold and drops quickly
after fully charged
The battery is defective. Take the
battery to the dealer.
Battery voltage rose
too fast
The battery has high
capacity and it takes
more than 72 hours to
charge
SBC100 is designed for 2-20Ah
batteries. Use a charger with higher
charging rate.
Reconnect the clamps with correct
polarity
Voltage is auto
detected when the
charger is connected
to the power and the
car battery
